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Dictionary of Occupational Titles (DOT) Job Descriptions
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5 PROCESSING OCCUPATIONS
550.682-010 to 558.482-010

    This category includes occupations concerned with refining, mixing, compounding, chemically treating, heat treating, or similarly working materials and products. Knowledge of a process and adherence to formulas or other specifications are required in some degree. Vats, stills, ovens, furnaces, mixing machines, crushers, grinders, and related equipment or machines are usually involved.


550.682-010 SIZE MAKER (paper & pulp)

    Operates equipment to cook and mix materials, such as starch, casein, resin, chemicals, and fillers, according to formula to make size for pulp paper: Turns valves to fill cooking vats with metered volumes of liquid ingredients and dumps specified amounts of solid ingredients into vats according to formula. Turns steam valves or adjusts burner to maintain specified temperature in vats for cooking starch, resin, or casein with water, lime, and chemicals. Opens drain valve or starts pump to transfer cooked material to mixing machine, dumps specified weights of alum, lithopone, clay, or titanium dioxide into machine, and starts machine to mix ingredients for specified length of time. Adds chemicals to mixture, according to specification, to prevent decomposition. Drains or pumps size to specified storage tanks.
GOE: 06.04.14 STRENGTH: H GED: R3 M2 L2 SVP: 5 DLU: 77

550.682-014 TANNING-SOLUTION MAKER (chemical)

    Controls series of vats that boil tanbark, quebracho, chemicals, and water to prepare tanning solution: Weighs specified amounts of materials on scale and dumps them into vat. Opens valves to admit water and steam into vat. Adjusts steam valve to maintain solution at specified temperature. Tests sample of solution for specific gravity, using hydrometer. Adds materials to solution to obtain solution of specified gravity. Starts pump to transfer solution from vat to storage tank. May grind bark or wood, using grinding machine.
GOE: 06.04.11 STRENGTH: M GED: R3 M1 L2 SVP: 5 DLU: 77

550.684-010 COAGULATING-BATH MIXER (plastic-synth.)

    Prepares coagulating bath used to transform cellulose slurry into rayon filaments, according to formula or proportion chart and process specifications: Measures prescribed types and quantities of bath ingredients, depending on forming process used in plant. Dumps or pumps ingredients, such as caustic soda or sulfuric acid, sodium sulfate, zinc sulfate, and glucose into mixing tank for transfer to trough containing water into which slurry is extruded. Tests acidity or alkalinity of bath at specified intervals, using pH meter, and adds additional ingredients to maintain solution at prescribed standard. May be designated Acid-Correction Hand (plastic-synth.) in plants producing rayon by viscose process.
GOE: 06.04.11 STRENGTH: M GED: R3 M2 L2 SVP: 4 DLU: 77

550.684-014 DYE WEIGHER (any industry) alternate titles: chemical weigher; color weigher; drug-room clerk; dye maker; dyer assistant

    Mixes dyes and chemicals for use in dyeing products, such as fabrics, hosiery, and yarns: Weighs out quantities of powdered or liquid dyes and chemicals, following formula sheet. Pours dyes and chemicals into pail or mixing tank and turns valve to admit water into tank or pail up to mark on container wall. Stirs ingredients with paddle and injects steam into solution to dissolve dye. Dumps contents of pail into supply tank or turns valves to transfer dye solution from mixing tank to supply tanks in dye room. Inventories dyes and chemicals and notifies DYER, SUPERVISOR (knitting; tex. prod., nec; textile) 582.131-014 as supplies are needed. May be designated according to dye mixed as Indigo Mixer (textile).
GOE: 06.04.34 STRENGTH: H GED: R3 M2 L2 SVP: 3 DLU: 81

550.684-018 PAINT MIXER, HAND (any industry)

    Mixes stains, paints, and other coatings for use in painting according to formulas: Pours pigments, paint paste, vehicle, and thinner into can. Stirs mixture with paddle. Compares mixed liquid with desired color sample to ensure that it matches. May blend colors to obtain desired shades. May test specific gravity of mixture, using hydrometer. When mixing colors for spray painting, may be designated Spray Blender (any industry).
GOE: 06.04.34 STRENGTH: L GED: R2 M1 L1 SVP: 3 DLU: 77

550.684-022 PRIMING-POWDER-PREMIX BLENDER (chemical)

    Weighs and blends powdered ingredients to form priming mixtures for small arms ammunition: Weighs specified amounts of pulverized and sifted ingredients and filters them by hand in prescribed order through silk screen onto blending paper. Lifts each corner of paper and pulls slowly toward diagonally opposite corner to fold and blend powder until examination of color shade indicates blending is accomplished. Pours mixture from paper into cardboard containers and marks containers with identifying data.
GOE: 06.04.34 STRENGTH: L GED: R2 M1 L2 SVP: 3 DLU: 77

550.684-026 SILVER-SOLUTION MIXER (chemical)

    Mixes silver solutions for spraying lacquer disks (original recording): Measures prescribed quantities of premixed silver solution and combines with distilled water. Tests mixed solution for conformity to standards, using laboratory test equipment. Deposits mixture in containers or spray tanks. May analyze plating solutions for conformity to standards.
GOE: 06.04.34 STRENGTH: L GED: R3 M2 L2 SVP: 3 DLU: 77

550.685-010 BATCH MIXER (soap & rel.)

    Tends mixer that compounds cleaning powder: Opens valves to admit specified quantities of ingredients into mixer or weighs and dumps ingredients into mixer, using scale. Presses button or moves lever to activate mixer that blends ingredients for designated time. Stops machine and opens valve to discharge cleaning powder into storage bins. May draw sample of blended ingredients for laboratory analysis. May keep production log.
GOE: 06.04.19 STRENGTH: M GED: R2 M1 L1 SVP: 3 DLU: 77

550.685-014 BLENDER I (chemical)

    Tends machine that blends batches of flushed colors derived from coal tar hydrocarbons: Dumps specified flushed pigments or dyes into tub of machine, using hoist. Adds specified chemicals to batch according to product specifications. Starts agitator to mix ingredients for specified time. Turns valves to pump blended pigments or dyes into storage tanks or drums.
GOE: 06.04.11 STRENGTH: M GED: R2 M1 L1 SVP: 2 DLU: 77

550.685-018 BRINE MAKER I (chemical)

    Tends tanks, filters, and auxiliary equipment that produce brine solution for use in electrolytic cells: Pumps water through salt beds or starts conveyor bringing salt from storage area for dissolution in water, producing mixture of specified salt content. Admits salt water and specified amounts of liquid chemicals, such as caustic soda or acid, to mixing tank to produce brine solution meeting plant standard. Pumps solution to settling tank to settle out impurities and through sand-bed filters for final purification. Draws sample of brine for laboratory analysis or tests density, salt content, and acidity, using hydrometer, salinometer, and pH meter. Turns valves to transfer brine to electrolytic cells and maintain brine at specified levels in supply lines, tanks, and cells. May dump materials into brine to adjust chemical composition to plant standard, using titration test to determine strength of solution. May pump water through resin and carbon beds to demineralize it. May tend heat exchanger to maintain temperature of brine within specified limits. When pumping brine through filters only, is designated Brine Purifier (chemical).
GOE: 06.04.11 STRENGTH: M GED: R3 M2 L2 SVP: 3 DLU: 77

550.685-022 CD-MIXER (rubber reclaim.)

    Tends machine that mixes ground scrap rubber with pigments, caustics, and oils to prepare rubber for devulcanization: Pulls slide on gravity chute or shovels ground scrap rubber into weigh hopper. Pulls lever to dump scrap rubber from weigh hopper into mixer. Measures and weighs pigments, caustics, and oils according to formula, and dumps or drains them into mixer. Starts machine that mixes materials for specified time. Pulls lever to release mixture from machine into pans. Lifts pans onto heater cars by hand or with hoist. Signals worker to move pans of mixed stock into heaters. May tend cracker mill that grinds scrap rubber into particles [GRINDER (rubber goods; rubber reclaim.)]. May unload heaters and dump devulcanized scrap rubber from pans. May line pans with waxed paper or sprinkle with pulverized soapstone to prevent rubber from sticking.
GOE: 06.04.13 STRENGTH: M GED: R2 M1 L1 SVP: 3 DLU: 77

550.685-026 CEMENT MIXER (rubber goods; rubber tire)

    Tends machine that mixes synthetic or natural rubber with solvents and chemicals to produce liquid rubber cement: Weighs and measures specified amounts of rubber, chemicals, and solvents, according to mixing instructions. Breaks down full batch formulas into partial batches and samples. Presses buttons to activate electrically driven paddles that stir mixture, or stirs mixture by hand, using paddle. Opens petcock of mixer to discharge cement into cans, or opens pipeline valves to transfer cement. Records types of cement mixtures and production of each.
GOE: 06.04.13 STRENGTH: H GED: R2 M1 L2 SVP: 3 DLU: 77

550.685-030 CHEMICAL PREPARER (chemical; electron. comp.)

    Tends equipment that compounds ingredients into chemical solutions used as adhesive or conductive coatings for electron tubes: Weighs and measures specified type and quantity of liquid and powdered ingredients. Pours, dumps, or pumps ingredients into mixing equipment. Starts equipment that compounds chemical ingredients and deionized water into chemical solutions, such as frit or conductive graphite. Tests mixture for conformance to prescribed standards, using testing devices, such as pH meter, resistivity meter, titration apparatus, colorimeter, thermometer, and viscometer. Pours compounded product into containers for application to tube seams, funnel, or ceramic parts by other workers.
GOE: 06.04.11 STRENGTH: L GED: R3 M3 L3 SVP: 4 DLU: 88

550.685-034 CHURN TENDER (plastic-synth.)

    Tends rotary mixer that blends aged alkali-cellulose crumbs with carbon disulfide to form cellulose xanthate for further processing into cellophane or rayon: Couples pipe to mixer to admit specified amount of carbon disulfide to churn (mixer chamber) filled with alkali-cellulose crumbs by other workers. Starts drum rotating, observes gauges, and moves or sets controls to maintain temperature of churn and length of mixing cycle within plant specifications. Stops machine and turns valve to expel excess gas remaining in drum. Opens hatch and dumps cellulose xanthate into cart or machine hopper for further processing. Scrapes interior of drum, using putty knife or scraper, to remove product residue before preparation of next batch. May tend continuous process equipment and be designated Disulfurizer Tender (plastic-synth.). May blend cellulose xanthate and caustic soda and be designated Tank Worker (plastic-synth.).
GOE: 06.04.13 STRENGTH: L GED: R3 M2 L2 SVP: 3 DLU: 77

550.685-038 COLOR-PASTE MIXER (textile)

    Tends machine to mix color paste for use in printing textiles: Measures out specified amounts of base colors and thickener, using calibrated ladles and spoons. Mixes ingredients in tub, using power mixer, and observes mixture to determine when ingredients have combined. Smears sample of printing paste on cloth and submits sample smear to COLORIST (profess. & kin.) for comparison with color standard. Adds base colors to mixture when advised by COLORIST (profess. & kin.). May strain color paste through cloth to remove lumps. May convey tubs of color to printing machine, using handtruck.
GOE: 06.04.11 STRENGTH: M GED: R3 M2 L2 SVP: 3 DLU: 77

550.685-042 COMPOUND FINISHER (chemical)

    Tends mixing machine to finish mixing of matchhead compound to produce mixture of specified viscosity: Lifts kettles of compounds from cart onto mixer with hoist. Starts mixer and pours dye solution into compound. Sets thermostat or opens valve to admit steam into jacket around kettle to heat compound if specified, and verifies temperature with thermometer. Fills graduated dipper with compound and times flow of compound from dipper with stopwatch to test viscosity. Adds specified ingredient according to test results until viscosity is correct.
GOE: 06.04.11 STRENGTH: M GED: R2 M1 L1 SVP: 3 DLU: 77

550.685-046 COMPOUNDER (pharmaceut.; soap & rel.)

    Tends mixer tanks and compounding kettle that mix and compound tinctures, perfumery solutions, color solutions, essential oils, and aromatic synthetics for use in manufacture of creams, perfumes, soaps, and powders: Weighs out specified types and quantities of liquid or solid ingredients in balance scale or scale tank, according to formula. Drains solution from scale tank into strainer pan to filter foreign particles. Dumps or pumps solution into compounding kettle that automatically washes it with alcohol to remove odors or adjusts valves and observes thermostat to heat solution as specified. Pumps solution into mixer tank that blends it for specified time, and through filter press for further purification. Drains sample for laboratory analysis. May test solution for color. May grind ingredients, such as castor bags or vanilla beans, using machine or hand grinder.
GOE: 06.04.11 STRENGTH: H GED: R3 M2 L2 SVP: 4 DLU: 77

550.685-050 COMPOUNDER (chemical)

    Tends machines that grind and mix ingredients, such as glue, dyes, water, chemicals, and resins, according to specifications, to produce compounds used in heads and striking surfaces of kitchen, penny, and book matches: Dumps chemicals, dyes, and other ingredients into sifting and grinding machines and starts machines to sift and grind ingredients, according to specifications. Dumps or pours specified quantities of ingredients into mixing machine and starts machine to mix ingredients, according to specifications. Measures viscosity of ingredients, using viscometer. May submit sample to laboratory for testing.
GOE: 06.04.11 STRENGTH: H GED: R2 M1 L1 SVP: 3 DLU: 77

550.685-054 CRUTCHER (soap & rel.)

    Tends machines that mix specified quantities and types of liquid, powder, and paste ingredients to form slurry for processing into soap products, such as bars, flakes, chips, and granules: Pulls slide from discharge chute of hopper to admit preweighed dry materials into tank, or shovels preweighed solid ingredients into tank. Opens valves to add specified amount of water, paste, or steam. Starts agitator to mix materials for prescribed period of time. Observes gauge and adjusts valves to maintain specified temperature. Weighs and dumps specified additional ingredients or adjusts scale tank and pumps in additional ingredients. Turns valve to pump completed batch to booster tank, or shovels completed batch into wheelbarrow. Draws sample of slurry for laboratory analysis. Records number of batches mixed.
GOE: 06.04.19 STRENGTH: M GED: R3 M2 L2 SVP: 4 DLU: 77

550.685-058 DUSTLESS OPERATOR (chemical)

    Tends machine that mixes powdered carbon black with water or binding agents in rotating drum to form pellets: Starts machine and turns valves to admit and regulate flow of water or binding agents into mixing drum. Examines and feels samples of product to verify that pellet size and moisture content meet specified standards. Opens inspection ports and observes conveyor system to detect jamming.
GOE: 06.04.19 STRENGTH: L GED: R3 M1 L2 SVP: 3 DLU: 77

550.685-062 GLUE MIXER (any industry)

    Tends agitator tanks that mix ingredients to produce chemical compounds, such as sealants, adhesives, fillers, and linoleum paste: Weighs and measures ingredients, such as casein, clay, flour, glue powder and gelatin, lignin, resins, and liquid catalysts or water, following prescribed formula, and dumps, pours, pumps, or scoops ingredients into machine, tank, or kettle. Pushes button to start agitators that blend ingredients. Observes mixing process and adds ingredients according to specifications. Manipulates controls to drain mixture from tanks or kettles. May draw product sample for laboratory analysis. May cook mixture, using steam-jacketed kettle. May manually mix compounds. May mark identifying information on containers. May record amount of product mixed. May be designated according to product mixed as Sealant Mixer (aircraft mfg.).
GOE: 06.04.19 STRENGTH: H GED: R3 M2 L2 SVP: 3 DLU: 87

550.685-066 GROUND MIXER (chemical)

    Tends agitator and auxiliary equipment to mix pigments according to specifications for use in ground coating and coloring on wallpaper: Measures and mixes ingredients in electric agitator to make sizing compounds. Dumps bags of powdered clay into mixing vat, and turns valves to add water. Starts pump to transport specified quantity of sizing compound from drum into mixing vat, and starts agitator. Loosens lumps of clay from sides of vat during mixing process, using paddle. Moves drums of base solution about work area, using handtruck.
GOE: 06.04.11 STRENGTH: H GED: R2 M1 L1 SVP: 2 DLU: 77

550.685-070 INSECTICIDE MIXER (chemical)

    Tends machine and equipment that mix liquid and dry ingredients according to formula to produce insecticides, pesticides, and fungicides: Weighs, measures, or turns valves to admit specified quantities and type of ingredients into mixer. Starts mixer to blend ingredients. Turns valve, pulls lever, or presses button to transfer mixture to storage tank or filling machine. Records quantity and type of ingredients mixed. May draw sample of product for laboratory testing.
GOE: 06.04.11 STRENGTH: H GED: R2 M1 L1 SVP: 2 DLU: 77

550.685-074 MIXER I (tex. prod., nec)

    Tends agitator tanks, portable mixing machines, and related equipment to produce compounds for coating and waterproofing fabrics: Measures and weighs materials, such as oils, pigments, plasticizers, resins, stabilizers, fillers, color concentrate, and water according to formula. Trucks drums of ingredients to mixers and dumps them into mixing chamber, using hoist, tilt, or by hand. Starts mixer to blend ingredients. Drains ingredients into storage tanks, buckets, or drums. Scrapes and cleans mixers, using hand scraper and solvents. May pump specified amounts of liquid plasticizer into supply containers or mixing chamber, as directed.
GOE: 06.04.11 STRENGTH: H GED: R3 M2 L1 SVP: 3 DLU: 77

550.685-078 MIXER (paint & varnish) alternate titles: batch mixer; blender; dispersion mixer

    Tends mixing machines that blend solid and liquid ingredients to make products, such as paints, lacquers, putty, paint pigments, and binders, following formula: Turns valves or sets pump meters to admit specified amounts of liquids, such as oils, solvents, and water into mixer. Weighs and dumps specified amounts of dry ingredients, such as plastic flash, color concentrates, and resins into mixer, as indicated on batch ticket, or dumps preweighed ingredients into tank. Pushes or pulls tank to dispersion mixing machine. Depresses pedal to lower mixing blades into tank and presses button to start blades revolving to mix and disperse ingredients. Turns valves to drain batch through hoses into pebble or ball mill or into holding tank. Draws sample from batch for laboratory test and adds ingredients to mixture as specified by laboratory. May clean equipment, using rags, solvent, and scraper. May be designated according to product mixed as Glass Enamel Mixer (paint & varnish); Lacquer Blender (paint & varnish); Paint Maker (paint & varnish); Paste Mixer (paint & varnish); Pigment Mixer (paint & varnish); Putty Maker (paint & varnish).
GOE: 06.04.11 STRENGTH: H GED: R3 M1 L2 SVP: 3 DLU: 78

550.685-082 MIXER OPERATOR (chemical; electron. comp.) alternate titles: blender

    Tends mixing machine that blends liquid and solid materials into chemical solutions and slurries used in manufacturing various products: Transfers materials to work area, using handtruck or forklift. Weighs materials according to formula or proportion tables, dumps materials into mixing chamber, and starts machine to mix materials. Examines or feels mixture or observes gauges or timer to determine when mixing is completed, and stops machine. Dumps or shovels material from mixing chamber onto conveyor or into containers for storage, shipment, or further processing, or turns valves or starts pumps to transfer mixed materials to designated processing areas. May test sample to ensure material meets specifications. May tend auxiliary equipment, such as grinders or driers, to prepare ingredients or process product.
GOE: 06.04.11 STRENGTH: H GED: R2 M2 L2 SVP: 3 DLU: 86

550.685-086 MIXER, FOAM RUBBER (rubber goods)

    Tends machine that mixes foam rubber particles with liquid latex and discharges mixture into molds to make products, such as cushions and mattresses: Opens storage bin chute to transfer ground particles to barrel. Weighs barrel, adds or removes foam rubber particles to obtain specified weight, and dumps material into mixing machine. Weighs and pours specified amount of latex into machine and starts machine that mixes ingredients. Places mold under discharge spout of machine and fills mold with mixture. May grind foam rubber, using powered grinding machine. May tend hydraulic press that cures filled molds to form cushions and mattresses [MOLDER, FOAM RUBBER (rubber goods)].
GOE: 06.04.13 STRENGTH: M GED: R2 M1 L1 SVP: 2 DLU: 77

550.685-090 MIXING-MACHINE TENDER (chemical; pharmaceut.)

    Tends mixing machines, agitator tanks, kettles, roller mills, and related equipment to compound and process ingredients according to formula to make powdered, liquid, paste, or cream chemical products: Weighs ingredients and dumps, pours, pumps, or shovels them into machine, tank, or kettle. Turns controls to achieve specified temperature. Starts agitator to mix ingredients for specified time. Adds ingredients as specified during mixing cycle. Tests solution for specific gravity, viscosity, or acidity, using testing devices, or submits sample to laboratory. May cook mixture, using steam-jacketed kettle. May pump mixture through homogenizer to prepare emulsions or through filter press to remove impurities. May connect waterlines between deionizer, filter press, and vapor and storage tanks to purify water for use in products. May drain product into other machine units or into storage tanks. May be designated according to type of product mixed as Chemical Mixer (pharmaceut.); Cream Maker (pharmaceut.); Dental-Cream Maker (pharmaceut.); Dye Mixer (photo. appar.); Liquid Compounder (pharmaceut.) II; Ointment-Mill Tender (pharmaceut.). May be designated: Perfume And Toilet Water Maker (pharmaceut.); Powder Compounder (pharmaceut.); Powder Mixer (chemical); Roller-Mill Tender (pharmaceut.); Rouge Mixer (pharmaceut.).
GOE: 06.04.11 STRENGTH: H GED: R3 M2 L2 SVP: 4 DLU: 77

550.685-094 PEARL-GLUE OPERATOR (chemical)

    Tends equipment that converts liquor glue into pearl glue (pearl-like bits): Opens valve to fill tank with gasoline. Starts refrigerant-circulating pumps to cool gasoline to required temperature. Pumps liquor glue through pearler-head tubes that deposit drops of glue into refrigerated gasoline to form pearl glue.
GOE: 06.04.19 STRENGTH: L GED: R2 M1 L1 SVP: 3 DLU: 77

550.685-098 POWERHOUSE HELPER (chemical)

    Tends mixing machine to blend phosphate, soda ash, lime, and other water-conditioning agents for use as binding agent for making carbon black: Starts pumps to transport ingredients into blending tanks. Starts mixing machine to blend ingredients. Starts pumps to transport mixture to storage tanks feeding furnace boilers of carbon manufacturing plant. Keeps log of gauge readings, such as water temperature and level in boilers and storage tanks.
GOE: 06.04.19 STRENGTH: M GED: R2 M1 L1 SVP: 3 DLU: 77

550.685-102 RUBBER-MILL TENDER (plastic-synth.; rubber goods; rubber reclaim.; rubber tire)

    Tends rubber milling machine to mix, blend, knead, or refine scrap, crude, synthetic, or precompounded rubber for further processing: Starts machine and turns valves on steam and cold waterlines to regulate temperature of rolls. Lays rubber slabs between rolls of mill. Cuts stock with knife, rolls it into bundle, and feeds stock back into mill until rubber reaches specified consistency. Sets adjustable knives against mill roll to cut continuous strip as rubber emerges from mill and feeds strip onto conveyor that carries strip to calenders or extruders, Adjusts clearance between mill rolls, using wrench. May wash or crack crude rubber by passing it through corrugated mill rolls and water spray. May weigh and measure liquid and dry chemicals and add them to rubber during kneading process. May be designated according to specialized operation performed as Mill Tender, Break-Down (rubber goods; rubber tire); Mill Tender, Warm-Up (rubber goods; rubber tire); Mill Tender, Washing (rubber goods; rubber tire); Mix-Mill Tender (rubber goods; rubber tire); Slab-Off Mill Tender (rubber goods; rubber tire).
GOE: 06.04.13 STRENGTH: H GED: R2 M2 L2 SVP: 3 DLU: 77

550.685-106 SEASONING MIXER (chemical)

    Tends equipment that mixes various pigments, lacquers, or chemicals used to color, coat, clean, or soften hides or skins: Pours specified ingredients into rotary mixing drum or mixing vat, according to formula. Moves lever to rotate drum, or lowers automatic mixing paddle into vat and moves switch to rotate paddle. Opens door of drum or tips vat to pour mixture into buckets. Delivers buckets to other workers, using handtruck. May be designated according to product mixed as Degreasing-Solution Mixer (chemical); Finishing-Compound Mixer (chemical); Pigment And Lacquer Mixer (chemical).
GOE: 06.04.11 STRENGTH: L GED: R2 M2 L2 SVP: 3 DLU: 77

550.685-110 SWEEPING-COMPOUND BLENDER (chemical)

    Tends machine that mixes ingredients, such as dye, oil, sand, sawdust, and water to make sweeping compound: Measures or weighs out ingredients according to formula. Dumps or pours ingredients into mixer. Starts agitator or tumbler and mixes ingredients for specified time. Turns valve to drain mixture into barrels. Weighs barrel on floor scale to determine weight. May clean mixers, scales, kettles, and work area, using rags and solvent. May pack and seal products in wooden cases and label cases and barrels.
GOE: 06.04.11 STRENGTH: H GED: R2 M1 L2 SVP: 3 DLU: 77

550.685-114 TETRYL-DISSOLVER OPERATOR (chemical)

    Tends equipment to dissolve crude tetryl in heated benzene for manufacture of explosives: Starts pump to transport benzene in weighing tank and turns valve to transfer it to dissolving tank. Admits steam to outer jacket of dissolving tank to heat solvent. Weighs out raw tetryl on scale and scoops it into tank with heated solvent. Starts agitator to mix solution for prescribed time. Turns valve to transfer solution to crystallizer for recovery of solvent.
GOE: 06.04.11 STRENGTH: L GED: R3 M1 L2 SVP: 3 DLU: 77

550.685-118 TUMBLER OPERATOR (chemical)

    Tends tumbling machine that blends ingredients of pyrotechnic powder for use in signal flares: Pours roughly mixed ingredients into tumbler. Closes door of tumbler, and starts tumbling machine to blend ingredients for specified period of time. Scoops blended mixture into container.
GOE: 06.04.11 STRENGTH: M GED: R2 M1 L1 SVP: 2 DLU: 77

550.685-122 WEIGHER AND MIXER (chemical)

    Tends machines that mix ingredients, such as pigments, resins, varnishes, solvents, and oils to produce ink or ink paste: Reads specifications to determine type and quantity of ingredients to be mixed. Starts pumps to transport preweighed liquid ingredients from storage tanks into containers. Weighs specified amounts of pigments and adds them to containers. Dumps contents of containers into rotary mixer, using hoist, or moves container onto bed of mixer and turns wheel that lowers mixing blades into containers. Starts motor to mix ingredients for predetermined time. Draws sample or scoops sample of solution for laboratory analysis. Adds ingredients as directed by laboratory, or extends mixing period to attain prescribed consistency. Scoops or pumps ink or ink paste to holding tanks or into containers. May heat solvents in kettle or with steam coil to remove chill before adding pigments.
GOE: 06.04.11 STRENGTH: H GED: R2 M1 L1 SVP: 4 DLU: 77

550.685-126 WET MIXER (chemical)

    Tends machine that mixes ground phosphate with sulfuric acid to produce superphosphate: Pulls levers to open storage tank or hopper and admit materials into weighing hopper of machine. Pulls lever to open bottom of weighing hopper and dump materials into mixer. Tests sulfuric acid to determine if strength and temperature meet specifications, using hydrometer and thermometer. Starts mixer and blends materials for specified time. Pulls lever to dump mixed materials into storage pit. Records weight of materials mixed.
GOE: 06.04.11 STRENGTH: L GED: R2 M1 L1 SVP: 2 DLU: 77

550.685-130 MATERIAL MIXER (plastic prod.)

    Tends drum-tumbling machine that mixes ingredients, such as resins, color pigments, and additives, for use in fabrication of plastic cosmetic packaging: Lines drum with plastic bag. Presses control to activate hopper that automatically fills drum with specified ingredients, or dumps measured ingredients into drum according to formula, using hand scoop and scale. Conveys filled drum to tumbling machine, using handtruck. Mounts and secures drum in holding device of machine, turns knob to set timing control, and presses button to actuate drum-tumbling action. Removes drum from machine at end of cycle and conveys drum to specified production machine, using handtruck.
GOE: 06.04.13 STRENGTH: V GED: R2 M2 L2 SVP: 2 DLU: 86

550.685-134 MIXING-MACHINE OPERATOR (plastic prod.; plastic-synth.)

    Tends machines that mix chemical ingredients, such as resins, plasticizers, solvents, and coloring matter with filler to produce plastics materials: Weighs, measures, and combines ingredients according to formula, and dumps or pours ingredients into mixer. Turns valves to pump liquid ingredients into mixer. Starts agitator to mix batch for specified time. Turns wheel or valves, opens gates, or presses switch to tilt mixer to discharge compound into containers, storage tanks, or hoses. Posts operating information in log. May wash equipment, using hose and brushes. May turn steam and water valves and observe gauges to regulate temperature of mix. May dry material in atmospheric drier. May be designated according to operation performed as Blender (plastic prod.; plastic-synth.); Color Mixer (plastic prod.; plastic-synth.); Resin Compounder, Batch Lot (plastic-synth.); Solution Mixer (plastic-synth.).
GOE: 06.04.13 STRENGTH: M GED: R3 M2 L2 SVP: 4 DLU: 78

550.686-010 BATCH TRUCKER (rubber reclaim.)

    Feeds specified quantities and types of ground devulcanized scrap rubber into mix mill to prepare batch for processing: Shovels mixture into monorail bucket or pushtruck, and dumps mixture into designated chute or onto feed conveyor of mix mill. Records batches produced. May drive scooptruck to transport mixture. May add specified pigments to mixture when blending.
GOE: 06.04.13 STRENGTH: M GED: R1 M1 L1 SVP: 2 DLU: 77

550.686-014 COMPOUND FILLER (chemical)

    Feeds supply of compounds and dope in tanks at dip conveyors for forming and treating heads of kitchen, penny, and book matches: Dips compounds from kettle into respective feed containers that automatically maintain tank level. Mixes specified solution of glyoxal and water, that hardens formed matchhead, and pours solution into dope tank. Removes and replaces dirty screens in dip tanks. Verifies level and temperature of paraffin in dip tanks. Pushes kettle trucks to and from compound room and dip area.
GOE: 06.04.11 STRENGTH: H GED: R1 M1 L1 SVP: 2 DLU: 77

550.686-018 CRUTCHER HELPER (soap & rel.)

    Weighs and dumps specified dry materials into feeder hopper of crutcher equipment, that forms slurry for processing into soap powder: Opens valves of supply tanks and waterlines to add prescribed liquid and paste. Mixes dye according to specifications and dumps dye into batch. Changes and cleans strainers. Sweeps and cleans work area.
GOE: 06.04.19 STRENGTH: H GED: R2 M1 L1 SVP: 2 DLU: 77

550.686-022 GLAZING OPERATOR, BLACK POWDER (chemical)

    Feeds grain powder, graphite, and other materials into glazing barrels: Dumps specified amounts of graphite, grain powder, and other ingredients into mechanically rotated glazing barrels that smooth out and lubricate powder. Opens barrel door to discharge contents into containers. May time rotation (glazing) period, using watch.
GOE: 06.04.19 STRENGTH: H GED: R3 M1 L1 SVP: 4 DLU: 77

550.686-026 MIXER HELPER (build. mat., nec)

    Dumps asphalt resin chunks into heating kettle to liquefy resin used as binding sealer in asphalt shingles. Chops resin into pieces, using ax, and feeds pieces into kettle. Lifts screen on return flow trough and removes foreign matter from screen by hand.
GOE: 06.04.19 STRENGTH: L GED: R1 M1 L1 SVP: 2 DLU: 77

550.686-030 MIXING-MACHINE FEEDER (chemical)

    Feeds dry chemical ingredients used in manufacture of fertilizer and insecticides into mixing machine. Empties hoppers or sacks of specified ingredients into machine or elevator bucket, using forklift truck or by hand. May start elevator to empty buckets into machine.
GOE: 06.04.11 STRENGTH: H GED: R1 M1 L1 SVP: 2 DLU: 77

550.686-034 MOTTLER-MACHINE FEEDER (fabrication, nec)

    Dumps color mix into hoppers of designated color-depositing machines: Scoops mix from bins and dumps it into hopper. Adds specified ingredients as directed. Breaks up lumpy color in feedlines, using long-handled stick. Cleans roller blades, using scraper.
GOE: 06.04.19 STRENGTH: H GED: R2 M1 L1 SVP: 2 DLU: 77

550.686-038 ROOF-CEMENT-AND-PAINT-MAKER HELPER (build. mat., nec; nonmet. min.)

    Assists ROOF-CEMENT-AND-PAINT MAKER (nonmet. min.) in making roof cement: Weighs sacks filled with materials to make roof cement and paint and dumps contents from sacks onto conveyor leading to mixing machine. Places cans under spigot of mixing machine. Performs other duties as described under HELPER (any industry) Master Title.
GOE: 06.04.11 STRENGTH: H GED: R1 M1 L1 SVP: 2 DLU: 77

550.687-010 CHEMICAL-COMPOUNDER HELPER (chemical)

    Shovels specified chemicals into tank of heated water to dissolve chemicals preparatory to charging mixing kettle that produces optical brightener (organic white dye) for soaps and fabrics. Moves drums of chemicals to work area, using handtruck. May read work orders to determine type and amount of chemicals to add to kettle. May be designated according to material produced as Optical-Brightener-Maker Helper (chemical).
GOE: 06.04.11 STRENGTH: M GED: R2 M1 L1 SVP: 2 DLU: 77

550.687-014 COLOR STRAINER (textile)

    Assists COLOR-PASTE MIXER (textile) in mixing color for use in printing textiles: Strains mixed colors through vacuum or other straining device to remove lumps and foreign matter. Carries colors to and from mixing area. Cleans working area and mixing equipment, using water hose. May mix colors. Performs other duties as described under HELPER (any industry) Master Title.
GOE: 06.04.16 STRENGTH: H GED: R1 M1 L1 SVP: 2 DLU: 77

550.687-018 DYE-WEIGHER HELPER (any industry)

    Assists DYE WEIGHER (any industry) in mixing dyes and chemicals for use in dyeing textile yarns and fabrics: Opens steam valve to heat dye solution. Stirs solution with paddle to dissolve dye. Dumps contents of mixing pails into or turns valve to transfer dye solution to supply tanks in dyeing department in response to light signal or to request over speaker system. Moves barrels of dye and chemicals to dye room, using handtruck. Cleans mixing tanks and work area, using waterhose. Performs other duties as described under HELPER (any industry) Master Title.
GOE: 06.04.34 STRENGTH: M GED: R2 M1 L1 SVP: 2 DLU: 77

551 FILTERING, STRAINING, AND SEPARATING OCCUPATIONS

    This group includes occupations concerned with separating desirable materials by means of filtering, precipitating, straining, sifting, squeezing, centrifugal force, or agitating devices.

551.130-010 SUPERVISOR, PROCESSING (chemical)

    Supervises and coordinates activities of workers engaged in conveying, washing, screening, packaging, or storing reclaimed or stockpiled salt: Reads production schedule to verify type and tonnage of salt to be processed. Inspects conveyor system and equipment, such as vibrating feeder screens, conveyor junction feeders, and automatic conveyor scales, for evidence of malfunctioning. Trains workers in operation of equipment. Coordinates flow of salt to processing stations to prevent production delays. Maintains production records and prepares reports on department activities. Performs other duties as described under SUPERVISOR (any industry) Master Title.
GOE: 06.04.01 STRENGTH: L GED: R4 M3 L3 SVP: 7 DLU: 77

551.362-010 PURIFICATION OPERATOR II (chemical) alternate titles: gas-scrubber operator

    Controls gas-scrubbing and related equipment to remove impurities from gases: Observes temperature, flow, pressure gauges, and liquid-level indicators and moves controls to effect operating equilibrium in equipment, according to plant procedure and correlation of instrument readings. Observes gas-scrubbing fluid through sight glasses to determine process efficiency, indicated by color and flow rate of fluid. Turns valves to maintain brine in brine scrubber at specified strength and regulate temperature of hot water in scrubber jacket, according to indicated efficiency of scrubbing fluid. Inspects pumps, motors, valves, and related equipment and replaces packing in column scrubbers and nitrogen-drying columns at specified intervals with acid, calcium chloride, or brine. Draws samples of gases and fluids for laboratory analysis. Maintains log of gauge readings and results of laboratory analyses. Directs activities of PURIFICATION-OPERATOR HELPER (chemical) 551.465-010.
GOE: 06.02.11 STRENGTH: L GED: R4 M2 L3 SVP: 7 DLU: 77

551.365-010 STRAINER TENDER (rubber reclaim.) alternate titles: fabric-separator operator; strainer-mill operator; tuber operator

    Tends machines that screen foreign material from ground, devulcanized scrap rubber: Opens chute on feed conveyors or shovels scrap rubber into hopper of strainer. Starts machine that forces scrap rubber through strainer screen. Regulates speed of machine and conveyors to prevent jamming of stock. Discharges strained scrap rubber onto conveyors for transfer to refining mills, or onto handtrucks for transfer to storage. Feels strainer, and opens water valves to prevent overheating of machine and scorching of rubber. Observes rubber for color and appearance and feels strained rubber to ensure that foreign material is removed. Cleans clogged strainer screens, using scraper and solvent, or replaces clogged and worn strainer screens, using handtools. Signals drying and milling department workers to maintain specified flow of scrap rubber through strainers. May dump bags of soapstone in discharge chute to facilitate movement of stock through screen conveyor. May tend magnetic device to facilitate removal of metal from rubber. May fill containers with screened rubber to specified weight and keep record of production.
GOE: 06.02.07 STRENGTH: L GED: R2 M1 L2 SVP: 4 DLU: 77

551.382-010 ABSORPTION OPERATOR (chemical) alternate titles: saturator

    Controls equipment that absorbs gases and liquids into water or other solvents to produce chemicals, such as hydrochloric acid or ammonium hydroxide: Starts pumps, turns valves, and observes flowmeters to control concentration, flow, temperature, and quantity of coolant, gas, liquid, and absorbing liquor through cooling and absorption towers. Turns valves to regulate feed of solution produced and rate of steam to purge boilers and condensers to separate impurities from solution and obtain product of designated strength and specific gravity. Draws sample and tests specific quality and acidity, using hydrometer and pH meter, or submits sample to laboratory for analysis. Pumps solution between equipment and storage tanks or tank cars. Maintains log of instrument readings, test results, and shift production. May be designated according to solution produced as Ammonium-Hydroxide Operator (chemical); Aqua-Ammonia Operator (chemical); Hydrochloric-Acid Operator (chemical).
GOE: 06.02.11 STRENGTH: L GED: R3 M2 L2 SVP: 5 DLU: 77

551.465-010 PURIFICATION-OPERATOR HELPER (chemical)

    Tends gas scrubbing and related equipment that removes impurities from gases, as directed by PURIFICATION OPERATOR (chemical) II: Loads brine saturators and nitrogen-drying columns with lump calcium chloride. Mixes hydrosulfate solutions used in process, according to proportion chart or oral directions. Observes gauges to determine gas pressures throughout system, computes and records drops in pressure, and ascertains from data obtained optimum time to shut down and clean equipment for efficient operation. Draws samples of acids, brine, and gases from equipment units for laboratory analysis and determines specific gravity of brine, using hydrometer. Drains liquid from nitrogen driers. Assists operator in maintaining operating log of gauge and instrument readings.
GOE: 06.02.11 STRENGTH: L GED: R3 M2 L2 SVP: 4 DLU: 77

551.485-010 WATER-TREATMENT-PLANT OPERATOR (chemical)

    Tends water plant equipment that scrubs and purifies gases from smelting furnaces: Starts pumps and fans in scrubber towers and turns valves to regulate flow of water through nozzles. Pulls lever to open car bottom to unload lime from hopper cars into storage tanks. Knocks on bottom of hopper with pry bar or uses portable vibrator to loosen lime remaining in car. Dumps specified number of sacks of sulfate, hydroxide, and fluoride into mixer machines. Starts conveyors to transport mixed chemicals and lime to reactor tanks that make reagent solution. Observes control panel, records readings, and calculates solution temperatures, scrubber fan loads, and flow of treatment solutions, using charts and graphs. Changes basket screens in reactor tanks, using chain hoist, and cleans screens with water or steam. Collects samples of treatment solutions and sludge for laboratory analysis. Measures acidity or alkalinity of clarifier overflow to determine efficiency of impurity recovery, using pH meter.
GOE: 06.02.11 STRENGTH: L GED: R3 M2 L2 SVP: 4 DLU: 77

551.562-010 FILTRATION OPERATOR, POLYETHYLENE CATALYST (chemical)

    Controls rotary-leaf filters and such auxiliary equipment as centrifuges, pumps, compressors, heat exchangers, and conveyors, to remove process catalyst from polyethylene products: Starts pumps, centrifuges, and compressors. Observes gauges and chart recorders; turns valves; and sets automatic control instruments to regulate temperatures, pressures, flow-rates, and liquid levels within plant specifications, and to transfer materials between units to ensure efficient removal of catalyst. Directs other workers engaged in tending pumps, compressors, and centrifuges and in making manual adjustments to equipment to maintain required process conditions. Moves manual and automatic controls to switch filters into and out of service for replacement of diatomaceous-earth coating. Records instrument readings and laboratory test results in operating log. Inspects equipment for malfunctions, wear, and leaks, reporting need for repairs to maintenance personnel.
GOE: 06.02.11 STRENGTH: L GED: R3 M2 L2 SVP: 5 DLU: 77

551.582-010 HYDRAULIC-STRAINER OPERATOR (plastic-synth.) alternate titles: filter operator

    Operates hydraulic filter machine to remove foreign matter from plastics material: Cuts plastics dough into slabs, using knife, or rolls material into lump and packs it into cylinder. Selects and installs wire and cloth strainers and die heads in machine, according to type and form of material, using handtools. Adjusts controls of hydraulic ram, according to pressure gauge reading, and starts machine to force material through strainers. Cleans strainers, die head, and machine cylinder, using brushes, scrapers, and solvents. Records amounts and type of dough strained.
GOE: 06.02.13 STRENGTH: M GED: R3 M1 L2 SVP: 5 DLU: 77

551.585-010 FILTER-TANK OPERATOR (chemical)

    Tends filter that cleans detergent used in toothpaste: Starts pumps that transfer toothpaste-detergent slurry to filter tank, and turns valve on vacuum line to draw liquid from slurry. Turns valves on feed lines to wash residual toothpaste detergent with specified solvent fluid. Shovels caked detergent into drum and clamps on lid. Weighs drum and records weight. Moves drum to storage area, using handtruck. Starts pumps to force filtrate liquid down through filter to stills to recover solvent. May record production data in log.
GOE: 06.04.11 STRENGTH: M GED: R2 M1 L1 SVP: 2 DLU: 77

551.585-014 MERCURY PURIFIER (chemical)

    Tends continuous-process equipment that purifies mercury recovered from electrolytic cells: Turns compressed air and water valves to start flow of mercury through acid bath and purification towers that remove contaminants from mercury. Drains purified mercury into storage tank. Refills purifying towers with mercurous nitrate purifying agent and verifies specific gravity of nitrate, using hydrometer, to ensure efficient purification. Cleans and flushes towers, using water hose. Records weight of mercury purified during shift.
GOE: 06.04.11 STRENGTH: M GED: R2 M2 L1 SVP: 4 DLU: 77

551.585-018 PAN HELPER (chemical)

    Tends equipment, such as filters, settlers, and thickeners, to assist in concentrating chemical solution: Turns valves and starts pumps to start flow of liquids from storage tanks through series of pans. Dumps sacks of chemicals into processing units. Patrols area to detect leaks and malfunctioning of equipment. Records data, such as temperature and pressure readings, and monitors gauges and recording charts to ensure safe operating conditions. Draws sample of product and tests for specific gravity, using hydrometer. Opens valves to drain and flush salt accumulations from pans and lines. Repacks pumps and valves and repairs equipment by adjusting or replacing parts, using handtools. Performs other duties as described under HELPER (any industry) Master Title.
GOE: 06.04.11 STRENGTH: H GED: R3 M1 L2 SVP: 4 DLU: 77

551.585-022 ROTARY-CUTTER OPERATOR (rubber goods)

    Tends machine that pulverizes scrap fabric into flock (powder): Cuts wire from bale of scrap, using wirecutters. Starts machine and dumps and spreads scrap on conveyor that moves scrap to rotary knives turning within fixed knives that pulverize scrap. Clamps sack over blower pipe and opens valve to fill sack with flock. Pushes plunger that forces pneumatic tamper into sack to compress flock. Closes top and sews filled sack, using needle and twine. Weighs filled sack and records weight on production record and tag.
GOE: 06.04.05 STRENGTH: H GED: R1 M1 L1 SVP: 2 DLU: 77

551.665-010 NAPHTHALENE OPERATOR (steel & rel.)

    Tends equipment that separates naphthalene from chemical drain oil used to wash coke-oven gas or tar distillate: Starts pumps to remove drain oil from scrubbing tower to collecting tank where naphthalene settles and crystallizes as oil cools. Opens drain valves or starts pumps to remove oil from pans to storage tanks. Dumps crystals into centrifuge to remove remaining oil [CENTRIFUGAL-DRIER OPERATOR (chemical)]. Dumps or shovels crystallized naphthalene into steam-heated tank to melt and further purify crystals. Draws sample from melting tank for laboratory analysis. Starts pumps to transfer naphthalene into storage tanks or railroad tank cars. May be designated according to work performed as Drier Tender, Naphthalene (steel & rel.).
GOE: 06.04.11 STRENGTH: M GED: R2 M1 L1 SVP: 3 DLU: 77

551.666-010 PITCH WORKER (optical goods)

    Dumps salvaged pitch into heated filtering kettle that filters pitch for reuse in blocking lens blanks: Opens valve to drain filtered pitch into cooling troughs and breaks up solidified pitch with hand tamper. Loads pitch into containers and delivers to BLOCKING-MACHINE TENDER (optical goods).
GOE: 06.04.19 STRENGTH: L GED: R1 M1 L1 SVP: 2 DLU: 77

551.682-010 BENZENE-WASHER OPERATOR (chemical; steel & rel.) alternate titles: acid-wash operator; agitator operator; benzene operator; benzol operator

    Controls agitator tank to wash (mix) benzol, benzene, toluene, and xylene with sulfuric acid and caustic soda to remove impurities: Turns valves and starts pumps to charge agitator vessel with specified amount of benzol or derivatives. Drains measured quantity of acid into vessel and starts agitator to mix contents for specified time. Stops agitator to allow acid and sludge to settle. Draws sample of washed product for laboratory colorimetry test to determine need for further washing. Opens valve, using wrench, to drain excess acid and sludge, adds caustic soda solution to neutralize remaining acid, and measures alkalinity, using standard titration test. Adds water, agitates mixture to wash out traces of caustic, and drains off water after contents have settled. Pumps washed benzol or derivatives into storage tank. Turns valves to admit steam to sludge kettle, solidifying sludge. Lifts kettle cover, using chain hoist, and removes sludge from kettle. May distill washed benzol in batch still [BATCH-STILL OPERATOR (chemical) I]. May remove impurities from crude ethylbenzene by adding lime and water and agitating mixture.
GOE: 06.02.11 STRENGTH: L GED: R3 M2 L3 SVP: 5 DLU: 77

551.685-010 BAND TUMBLER (rubber goods)

    Tends tumbler that removes water from rubberbands: Carries tote box of bands from band-cutting machine and dumps bands into tumbler. Starts mechanism that rotates bands for specified time to remove moisture from bands. Removes and carries bands to bundling and boxing machines.
GOE: 06.04.07 STRENGTH: M GED: R1 M1 L1 SVP: 2 DLU: 77

551.685-014 BOILING-TUB OPERATOR (chemical) alternate titles: washing-tub operator

    Tends tanks in which crude tetryl explosive or nitrocellulose is boiled and washed to remove acids and impurities: Admits batch of crude tetryl slurry to boiling tank. Starts tank agitators and turns valve to admit steam to tank jacket to boil slurry for specified time. Pumps off water after material has settled. Pumps fresh water through tank to wash tetryl and flush away impurities. When boiling nitrocellulose, admits acid to tub and boils contents for specified time, adds neutralizing agent, and repeats process until all nitrocellulose impurities are removed. May test acidity of solution, using hydrometer or titration test. When boiling tetryl, is designated Tetryl-Boiling-Tub Operator (chemical).
GOE: 06.04.11 STRENGTH: L GED: R2 M1 L1 SVP: 2 DLU: 77

551.685-018 BONE-COOKING OPERATOR (chemical)

    Tends steam-heated vats that extract gelatin from crushed bone: Turns valve to introduce steam that heats vat filled with crushed bone. Adds water to vat and dumps in specified amounts of ingredients that hasten extraction of gelatin. Drains vat and signals other workers to remove bone residue from vat.
GOE: 06.04.19 STRENGTH: L GED: R3 M1 L2 SVP: 3 DLU: 77

551.685-022 CATALYST-RECOVERY OPERATOR (chemical)

    Tends filter presses, evaporators, dissolvers, and precipitators that recover and recondition catalysts used in manufacturing styrene and edible oils: Starts pump and opens feed and discharge valves to transfer used catalyst from processing equipment into tank for reconditioning. Observes meters and gauges, and turns valves to maintain prescribed rate of flow, temperature, and pressure of compressed hydrogen, steam, and acid in filter or reconditioning tank. Weighs and adds specified amounts of neutralizer and filter aid. Pumps batch to filter press to change catalyst into cake form for recovery. Turns valves to regulate feed and temperature of filtrate in evaporating tank for recovery of remaining catalyst. Removes catalyst residue from tank and filter plates, using shovel and scraper.
GOE: 06.04.11 STRENGTH: H GED: R3 M2 L2 SVP: 3 DLU: 77

551.685-026 CENTRIFUGAL-DRIER OPERATOR (chemical) alternate titles: centrifuge operator

    Tends centrifugal drier that removes water or other liquids from slurries: Inserts filter cloth and screen in basket of centrifugal drum. Lowers bell-shaped cover over outlet in bottom of basket if unit is bottom-discharge type and shovels, pours, or pumps slurry into basket. Closes lid if unit is top-discharge type. Starts basket revolving and moves control to regulate speed, according to specifications. Lifts bell, lowers blade to cut crystallized cake from walls of basket, and pushes centrifuged mass through outlet into containers or onto conveyor, using paddle. May release trap door, start pumps, or shovel material from basket to unload drier. May turn steam or fuel valves to heat drier basket or drum to maintain centrifuged material at specified temperature while drying. When drying and discharging salt, may be designated Salt Cutter (chemical).
GOE: 06.04.11 STRENGTH: M GED: R3 M1 L1 SVP: 4 DLU: 77

551.685-030 CENTRIFUGE OPERATOR (soap & rel.) alternate titles: salt operator

    Tends centrifuge and auxiliary equipment that washes and dries slurry solution, formed during making of soap, to recover glycerin-free salt: Tests sample of slurry from decantation tank for salt content and to determine rate of flow of solution into centrifuge hopper, using testing instruments, such as hydrometer. Turns valve to run slurry into centrifuge and presses switch to start machine. Observes gauges to verify rate of flow and adjusts thermostat to regulate temperature of water in centrifuge. Opens valves to fill drums or silo with salt flakes. Turns valve to discharge liquid into holding tanks. May dissolve salt in liquid to make brine and perform specific gravity test, using hydrometer.
GOE: 06.04.19 STRENGTH: L GED: R2 M1 L1 SVP: 2 DLU: 77

551.685-034 CENTRIFUGE OPERATOR (paint & varnish)

    Tends centrifuge that removes impurities from varnishes and lacquers: Positions filter cloth on supply tank of centrifuge. Starts pump to transfer product from cooling tank, through filter, into containers or supply tank. Starts centrifuge and opens discharge valve to transfer filtered material from centrifuge into portable tank. Adjusts controls to regulate flow of material through lines and tanks. May start pumps to transfer liquids from portable tank to storage tank. Disassembles centrifuge and pump, using handtools and cleans equipment with solvents. Pumps liquids to filter press if further filtration is specified. May be designated according to material filtered as Lacquer Filterer (paint & varnish); Varnish Filterer (paint & varnish) I.
GOE: 06.04.11 STRENGTH: H GED: R2 M1 L1 SVP: 2 DLU: 77

551.685-038 CENTRIFUGE-SEPARATOR OPERATOR (chemical)

    Tends centrifuge to separate grease from liquid glue: Admits glue liquor from bone-cooking tank into centrifuge machine and starts machine. Drains grease and glue into separate storage tanks. Disassembles and cleans equipment.
GOE: 06.04.11 STRENGTH: L GED: R2 M1 L1 SVP: 2 DLU: 77

551.685-042 CHILLER OPERATOR (chemical)

    Tends chiller and centrifugal drier that crystallize diluted caustic soda solution and remove liquid from crystallized product: Starts pump to transfer caustic soda solution and water into dilution tank and determines specific gravity of diluted solution, using hydrometer. Pumps solution through refrigerating unit and into chiller. Observes consistency of crystallized slurry flowing from chiller to centrifuge, and turns valves to regulate feed rate and maintain slurry at specified consistency. Tends centrifugal drier [DRIER OPERATOR (chemical) III] to remove liquid component of slurry. May turn valve to heat centrifuge unit if machine is so equipped. Inspects feed and outlet pipes of equipment and flushes lines, using hose, to prevent clogging.
GOE: 06.04.11 STRENGTH: L GED: R2 M1 L2 SVP: 3 DLU: 77

551.685-046 DEHYDRATING-PRESS OPERATOR (chemical; plastic-synth.)

    Tends press that removes water from nitrocellulose used in manufacturing smokeless powder and pyroxylin for use in plastics: Pours specified amount of nitrocellulose into bottom cylinder of dehydrating press. Presses button or opens water valve to force plunger down onto bottom cylinder. Pumps alcohol into lower cylinder and through wet nitrocellulose to displace water. Removes cakes of water-free nitrocellulose and places them on handtruck for removal.
GOE: 06.04.11 STRENGTH: M GED: R2 M1 L2 SVP: 2 DLU: 77

551.685-050 DUST-COLLECTOR OPERATOR (soap & rel.)

    Tends equipment, such as scrubbing towers and centrifugal pumps, that recover powder from spray-tower exhaust gas and prevent air pollution: Starts fan to draw air and accumulated dust from spray tower into scrubbing tower. Starts steam pump to wet powder, causing it to flow down baffle plates to bottom of tower. Opens valve to permit recovered powder to flow into storage tank for reuse. Pumps recovered powder from storage tank to crutcher machine for reprocessing. Records spray-tower exhaust temperatures and gas pressures on chart.
GOE: 06.04.19 STRENGTH: L GED: R2 M1 L1 SVP: 3 DLU: 77

551.685-054 EXTRACTOR OPERATOR (chemical; oils & grease)

    Tends steam pressure tanks that extract grease from cracklings: Adjusts temperature and pressure of tank filled with cracklings. Starts pumps to transfer specified solvent into tank to dissolve cracklings. Opens valve to transfer extracted grease to still. Takes sample of grease from still and inspects for clarity.
GOE: 06.04.19 STRENGTH: H GED: R2 M1 L1 SVP: 2 DLU: 77

551.685-058 EXTRACTOR OPERATOR (pharmaceut.)

    Tends equipment that heats and mixes solvent with ground leafy plant to separate products, such as chlorophyll: Weighs specified amount of ground plant matter, such as alfalfa, and dumps it into steam-jacketed tank. Starts pumps to transfer specified amount of solvent into tank. Starts agitator that mixes solvent with plant matter to dissolve usable constituents. Observes thermometer and opens valve to regulate admission of steam to jacket and to maintain tank heat at prescribed temperature. Connects siphon hose and starts vacuum pump to transfer liquid products to collecting barrel, or to other departments for further processing or storage. May record production data in log. Opens tank outlet to dump residue into waste container.
GOE: 06.04.11 STRENGTH: M GED: R2 M2 L2 SVP: 3 DLU: 77

551.685-062 EXTRACTOR OPERATOR, SOLVENT PROCESS (chemical) alternate titles: solvent-plant operator

    Tends solvent extraction equipment that extracts oil from rice bran, soybeans, and cottonseeds: Observes temperature and steam pressure gauges, flowmeters and ammeters, and turns valves or handwheels to regulate temperature and flow of material in equipment within specified limits. Tests samples of material for conformity to plant standards, using scales, moisture meter, and hydrometer, or by titration. Records indicator readings and test results. May clean filter plates of extractor.
GOE: 06.04.11 STRENGTH: L GED: R2 M1 L1 SVP: 2 DLU: 77

551.685-066 EXTRACTOR-AND-WRINGER OPERATOR (chemical)

    Tends equipment that extracts salicylic acid from sodium salicylate solution by precipitation and dries salicylic acid by centrifugal force: Opens valves to pump sodium salicylate solution and required amount of sulfuric acid into extractor columns that absorb phenol from solution and cause precipitation of salicylic acid crystals. Opens steam valves to heat extractors to specified temperature to increase rate of precipitation of salicylic acid. Pumps off solution of sulfuric acid and phenol, and pumps slurry of salicylic acid through cooler to centrifugal drier. Tends centrifugal drier that forces out water to dry salicylic acid. Removes salicylic acid from drier and places acid into containers, using scraper and shovel.
GOE: 06.04.11 STRENGTH: L GED: R2 M1 L1 SVP: 2 DLU: 77

551.685-070 FAT-PURIFICATION WORKER (oils & grease) alternate titles: acidulator

    Tends acidulation tanks and auxiliary equipment that separate undesirable compounds from oils: Turns valves to fill tanks with basic materials and to admit prescribed amounts of sulfuric acid and caustic. Starts agitator that mixes and separates ingredients. Starts pumps or opens drain valve to transfer separated material into storage tanks. May draw sample to test for pH volume, using titration test.
GOE: 06.04.11 STRENGTH: L GED: R3 M1 L2 SVP: 3 DLU: 77

551.685-074 FILTER HELPER (chemical)

    Tends filter that removes excess water from activated carbon slurry, preparatory to drying, for variety of industrial and consumer applications: Moves lever to transfer carbon slurry from discharge chute onto revolving filter cloth. Raises and lowers spreader gate to spread carbon uniformly over surface of filter cloth. Dumps bags of processed carbon onto conveyor leading to shipping or storage area. Monitors vacuum gauge on filter and observes color of wash water to detect leaks in cloth. Scrapes carbon from surface of cloth, using wood paddle, to examine for leaks and other damage or wear. Flushes filter cloth with water hose preparatory to changing cloths.
GOE: 06.04.19 STRENGTH: M GED: R2 M1 L1 SVP: 2 DLU: 77

551.685-078 FILTER OPERATOR (any industry) alternate titles: sludge-filter operator; vacuum-filter operator

    Tends rotary drum-filters that separate slurries into liquid and filter cake (insoluble material): Couples flexible hose or pipe to vat, starts pump, and turns valves to regulate flow of slurry to filter tanks. Adjusts controls to regulate rotation speed of drums. Turns valve to regulate pressure that forces slurry through filter, separating filter cake from liquid. Observes discharge to ensure that scrapers are removing filter cake from drum. May tend thickeners, washing sprays, settlers, or related equipment. May draw sample for laboratory analysis. May be known according to trade name of machine.
GOE: 06.04.19 STRENGTH: M GED: R2 M1 L1 SVP: 2 DLU: 77

551.685-082 FILTER-PRESS OPERATOR (any industry)

    Tends filter plate press that removes impurities or moisture from slurries and chemical solution: Covers filter plates with cloth, canvas, or paper. Opens valve to admit liquid ingredients into tank, dumps specified dry ingredients into tank, and starts agitator to mix ingredients and form slurry. Starts pump to transfer slurry from mixing tank to filter plate press. Opens pressure valves to force slurry through plates to remove impurities and moisture. Turns gear wheel to release tension of plates at completion of cycle. When filtering to obtain liquid product, dislodges solid material from plates and cleans frames, screens, and filters, using scraper, steam, or compressed airhose. When filtering to obtain solid product, cuts mixture from frames with knife and loads materials on drying trays. May draw samples for laboratory analysis. May be designated according to product filtered as Pigment Presser (chemical); Plate-and-Frame-Filter Operator (any industry); Resin Filterer (paint & varnish); Varnish Filterer (paint & varnish) II.
GOE: 06.04.11 STRENGTH: H GED: R2 M1 L1 SVP: 3 DLU: 81

551.685-086 GREASE-REFINER OPERATOR (oils & grease)

    Tends kettle that refines grease according to specifications: Moves lever to admit grease into kettle and opens valve to admit steam into grease to control boiling. Draws off sample of grease and inspects it for clarity. Starts pump to add required amounts of acid to kettle and boils grease with acid until grease reaches specified clarity. Closes steam valve and allows water and impurities to settle to bottom of kettle. Opens valve to drain off water and impurities. Closes drain valve, opens steam valve, and starts pump to fill kettle with water. Boils mixture for specified amount of time to wash out acid and remaining impurities. Opens drain valve to drain off water and impurities. Pumps grease to storage tanks.
GOE: 06.04.19 STRENGTH: L GED: R2 M1 L1 SVP: 3 DLU: 77

551.685-090 LEACHER (paper & pulp)

    Tends leach tanks that recover soda ash from black ash: Opens valve to admit water or weak liquor (soda ash) solution into leach tanks containing black ash. Starts agitators to stir mixture and dissolve soda ash. Withdraws samples of resultant solution and tests for concentration of soda ash, using hydrometer. Starts pump to circulate water or soda ash through leach tanks and into storage tanks until test samples contain specified concentration of soda ash. Shovels black ash into leach tanks as supply in tank becomes exhausted. Opens drain to remove insoluble charcoal residue from leach tanks after completion of recovery process.
GOE: 06.04.11 STRENGTH: L GED: R2 M1 L1 SVP: 3 DLU: 77

551.685-094 LYE TREATER (chemical; soap & rel.)

    Tends heated kettle and filter press in which lye is treated with chemicals to remove undesirable properties in glycerine purification process: Starts pump to transfer premeasured lye into kettle, starts agitator to mix batch, and turns steam valve to heat kettle to prescribed temperature. Dumps specified amounts of dry chemicals or pumps liquid chemicals into kettle to attain product of specified concentration. Inspects batch sample for clarity and submits sample laboratory for testing. Regulates chemical concentration of batch, following laboratory report. Pumps batch through filter press to remove materials precipitated during treatment. Cleans filter press and replaces filter cloths, using handtools. Records kettle temperature, agitation and treating time, and amount of chemicals used in process.
GOE: 06.04.11 STRENGTH: M GED: R3 M2 L2 SVP: 3 DLU: 77

551.685-098 MERCURY WASHER (chemical) alternate titles: mercury recoverer

    Tends equipment that recovers and reconditions mercury used in electrolytic cells: Sweeps, shovels, and dumps mercury-bearing material onto vibrating screen that separates mercury. Flushes screen with water, using hose, and drains off water into settling tank, forming sludge. Ladles contaminated mercury and sludge into reclaiming kettle and turns valves to admit acid and steam to separate foreign matter from mercury. Drains mercury into flask. May break used cell anodes to salvage porcelain insulators and copper posts, using hammer. May tend concentrating table to remove mercury residue from scrap material for recovery. May weigh flasks of recovered mercury for inventory records.
GOE: 06.04.11 STRENGTH: H GED: R2 M1 L1 SVP: 3 DLU: 77

551.685-102 NITROGLYCERIN-SEPARATOR OPERATOR (chemical) alternate titles: separator

    Tends gravity separator to separate nitroglycerin from spent acids, preparatory to washing, neutralizing, and processing into explosives: Turns petcock to transfer mixture of spent acids and nitroglycerin from batch nitrator to separator. Turns petcock to drain acids from nitroglycerin into trough leading to spent-acid storage. Observes liquid flowing from spigot and moves trough to discharge product into wash tank when color change indicates nitroglycerin is flowing from separator. Observes tank thermometer to detect accumulation of heat that could cause decomposition and explosion and turns valves to regulate heat to prevent explosion or decomposition. May move control to dump tank contents into water-filled vat if temperature increase indicates explosion may be imminent. May wash and neutralize nitroglycerin [NITROGLYCERIN NEUTRALIZER (chemical)].
GOE: 06.02.18 STRENGTH: L GED: R3 M1 L1 SVP: 4 DLU: 77

551.685-106 POACHER OPERATOR (chemical) alternate titles: pulp-screen operator

    Tends tanks that remove acidity, impurities, and inadequately processed material from nitrocellulose, used in manufacturing chemical and explosive products: Pumps nitrocellulose into poacher tubs (tanks) fitted with steam coils or steampipes. Turns valves to admit water and steam to boil mixture for specified time. Tends shaker screen and vacuum filter to wash nitrocellulose. Takes samples to laboratory for analysis. Reads laboratory reports and adjusts blends to meet specifications. Loads blender tubs with measured amount of different types of nitrocellulose to blend products according to specifications.
GOE: 06.02.18 STRENGTH: L GED: R3 M1 L2 SVP: 4 DLU: 77

551.685-110 PRECIPITATE WASHER (chemical)

    Tends filters and related equipment to wash and filter catalytic chemicals used in manufacturing styrene and butadiene: Starts pump to force water into and out of tanks containing precipitate. Titrates sample of wash water to determine when solution is neutralized. Pumps precipitate into slurry tank and wash water to filter press to separate contaminants and recover usable products. Transfers containers of filtered solutions to storage or further processing, using hoist or handtruck.
GOE: 06.04.11 STRENGTH: M GED: R3 M1 L1 SVP: 3 DLU: 77

551.685-114 PRESS OPERATOR (oils & grease)

    Tends hydraulic press to extract grease and tallow from cooked offal, bone, and meat scraps: Opens storage chute gate to start flow of material into press basket or shovels material from vat into basket, and places steel plate over each layer until basket is full. Pulls press-head over basket and pulls lever to raise hydraulic ram that presses grease and tallow from cooked material. Removes crackling cakes and plates from basket and dumps cakes into conveyor chute.
GOE: 06.04.19 STRENGTH: H GED: R2 M1 L1 SVP: 2 DLU: 77

551.685-118 PRESS OPERATOR II (chemical)

    Tends hydraulic press that squeezes liquid from crystallized chemical products and compacts material to facilitate melting: Shovels crystallized material into basket of press and positions metal disks in layers throughout material in basket. Moves levers to raise basket against plunger, squeezing liquid from crystals and compressing crystals into round, layer-like blocks. Dumps blocks into heated tank and turns steam valves to melt blocks. Starts pumps to transfer resulting liquid for further processing.
GOE: 06.04.11 STRENGTH: M GED: R2 M1 L1 SVP: 2 DLU: 77

551.685-122 PURIFICATION OPERATOR I (chemical)

    Tends equipment that separates hydrocarbons from coal tar derivatives: Opens valves and starts pump to transfer slurry of hydrocarbons into tank containing organic solvent. Adjusts steam valves to heat solution to specified temperature. Opens water valves to cool solution and promote crystallization of hydrocarbon. Pumps solvent into reclaim tanks, and pumps slurry or hydrocarbon crystals to centrifugal drier. Starts centrifugal drier to remove remaining solvent from hydrocarbon crystals. Discharges hydrocarbon into loading hopper. Records production data in log. May be designated according to specific hydrocarbon processed as Anthracene Operator (chemical). May tend equipment that clarifies creosol derived from coal tar and be designated Clarification Operator (chemical).
GOE: 06.04.12 STRENGTH: M GED: R3 M2 L2 SVP: 2 DLU: 77

551.685-126 SALT WASHER (chemical)

    Tends machine that removes dirt and other foreign particles from salt prior to storage or processing into commercial products: Starts conveyor that transfers required quantity of salt into tank of water to prepare saline solution of specified density. Turns valve to admit cleaning solution into machine. Observes operation to detect equipment malfunction and to ensure that salt meets standards of cleanliness. Pumps dirty solution into tank and adds soda ash and lime to cause dirt and foreign matter to precipitate and settle. Draws sample of clean solution for laboratory analysis. May be designated according to stage of treatment at which salt is cleaned as Salt Washer, Harvesting Station (chemical); Salt Washer, Processing Station (chemical).
GOE: 06.04.11 STRENGTH: L GED: R3 M1 L2 SVP: 4 DLU: 77

551.685-130 SCREEN OPERATOR (chemical) alternate titles: shaker-screen operator; vibrating-screen operator

    Tends vibrating or oscillating shaker screens that separate solids from liquids or sift powdered chemical materials into particles of specified size: Starts action of screens. Turns valves, starts conveyors, or moves chute vanes to control flow of materials to screens according to type of material to be screened. Sifts sample of sized product through laboratory test screens to determine if particle size meets specifications and records results. Changes screen mesh or cloths as directed and repairs equipment, using handtools. Cleans screens, using brushes and liquid cleaning agents. May tend related equipment, such as grinding mills, conveyors, and container-filling units. May examine materials to detect impurities that could contaminate product or damage screens.
GOE: 06.04.11 STRENGTH: L GED: R2 M1 L1 SVP: 3 DLU: 77

551.685-134 SODA DIALYZER (plastic-synth.)

    Tends tanks that recover caustic soda from solutions used in viscose rayon production: Turns valves to admit impure soda solution to outside section of tank and water to inside section, effecting absorption of soda into water by osmosis through cloth membrane separating sections. Turns valves to regulate discharge of resulting pure soda and intake of impure soda, according to level of solution in tank sections.
GOE: 06.04.13 STRENGTH: L GED: R3 M1 L2 SVP: 4 DLU: 77

551.685-138 STEEPING-PRESS TENDER (plastic-synth.) alternate titles: caustic-room attendant

    Tends open tank that impregnates (steeps) sheets of woodpulp with caustic soda for use in rayon production: Positions rectangular sheets of pulp between perforated separator plates, using tongs. Turns valves to admit caustic solution and steam into tank. Drains tank after specified steeping time. Presses button to activate hydraulic ram that presses excess caustic from steeped sheets and discharges sheets into shredder.
GOE: 06.04.18 STRENGTH: L GED: R2 M1 L2 SVP: 3 DLU: 77

551.685-142 SULFATE DRIER-MACHINE OPERATOR (steel & rel.)

    Tends equipment that cleans and dries ammonium sulfate crystals: Pushes crystals from drain table into trough. Opens trough gate to discharge crystals into drier. Starts centrifuge to separate crystals of ammonium sulfate from acid and tar. Washes remaining impurities from crystals with hot water, using hose. Resumes spinning of centrifuge to complete drying. May neutralize acid in sulfate crystals with ammonia liquor.
GOE: 06.04.11 STRENGTH: L GED: R2 M1 L1 SVP: 4 DLU: 77

551.685-146 TETRYL-SCREEN OPERATOR (chemical)

    Tends shaker screen to remove lumps from dried tetryl explosive: Transfers trays of dried tetryl to screening area, using handtruck. Starts motor that activates shaker screen to separate tetryl powder from lumps. Dumps tetryl from trays into feed hopper of screen. Lines catch boxes with wax paper, and positions boxes beneath discharge spout of screen to receive screened tetryl powder. Weighs filled boxes and stacks on handtruck for transfer to storage. Carries containers of tetryl lumps to distillation equipment for reprocessing.
GOE: 06.04.11 STRENGTH: M GED: R2 M1 L2 SVP: 2 DLU: 77

551.685-150 VACUUM-PAN OPERATOR I (chemical)

    Tends vacuum pan to wash and dry crystallized tetryl powder for further processing into explosives: Opens release valve to transfer tetryl from crystallizer to vacuum pan. Fills pan with warm water and turns suction valve to draw off liquid and dissolved impurities, leaving powder to settle in felt bag. Shovels and scrapes powder into tub on handtruck. May scrape powder into trays and place trays in drying chambers.
GOE: 06.04.11 STRENGTH: M GED: R2 M1 L2 SVP: 2 DLU: 77

551.685-154 VACUUM-PAN OPERATOR II (chemical)

    Tends equipment that removes excess acid from nitrated crude tetryl explosive, preparatory to further processing: Opens valve to load vacuum pan with tetryl slurry. Turns steam jet to draw off excess acid. Shovels and scrapes remaining moist powder from pan, grids, and filter cloth; and flushes it with water hose down into funnel leading to washing tubs. May neutralize acid water from subsequent washing operations. May shovel specified amounts of lime into hopper of lime feeder that neutralizes acid water from subsequent washing operations.
GOE: 06.04.11 STRENGTH: L GED: R2 M1 L2 SVP: 3 DLU: 77

551.685-158 WAX BLEACHER (chemical) alternate titles: beeswax bleacher

    Tends vats and filter presses to bleach wax used in candlemaking: Measures and dumps specified chemicals and wax into vats and turns thermostat knob to prescribed temperature to liquefy wax. Packs granulated charcoal on sides of filter press and starts pump to circulate molten wax through press. Stops pump after specified time and drains sample for laboratory analysis. Turns valves or starts pumps to transfer wax from press to tanks. Records types and quantities of wax used.
GOE: 06.04.11 STRENGTH: H GED: R3 M1 L2 SVP: 3 DLU: 77

551.685-162 WRINGER OPERATOR (chemical) alternate titles: tetryl-wringer operator

    Tends centrifugal wringer to remove acid or water remaining in nitrocellulose after processing: Starts pumps to convey partially processed nitrocellulose slurry to wringer basket. Moves control to regulate speed of wringer throughout process, as instructed. Stops wringer after specified time and loosens nitrocellulose from walls, using scraper or fork, Opens discharge gate and pushes nitrocellulose through aperture into water immersion bowl to convey slurry to next operation, or hopper to be packed into containers. When removing water from nitrocellulose, may be designated Poacher-Wringer Operator (chemical). May take samples of nitrocellulose for laboratory analysis.
GOE: 06.04.11 STRENGTH: M GED: R2 M1 L1 SVP: 2 DLU: 77

551.686-010 BEAD PICKER (rubber reclaim.)

    Picks bead wires from ground rubber tires as they pass on conveyor from grinding machine and drops them in container or on conveyor for removal to scrap area.
GOE: 06.04.29 STRENGTH: L GED: R1 M1 L1 SVP: 1 DLU: 77

551.686-014 EXTRACTOR LOADER AND UNLOADER (chemical)

    Feeds conveyor and loads bones into tank of machine that extracts grease. Closes tank and seals cover. Rakes bones from tank after extraction process. Removes burlap filter from bottom of tank and washes and replaces filter.
GOE: 06.04.19 STRENGTH: L GED: R2 M1 L1 SVP: 2 DLU: 77

551.686-018 HOPPER FEEDER (oils & grease) alternate titles: grease-press helper

    Rakes cooked offal or tankage from cookers or from platform near press into hopper of hydraulic press used to extract grease. Cleans working area and scrubs floors, using cleaning agents and brushes. May rake crackling residue from extractor tanks onto conveyor and start pump to transfer solvent to extractor tanks to dissolve crackling and be designated Extractor Puller (oils & grease).
GOE: 06.04.19 STRENGTH: M GED: R1 M1 L1 SVP: 2 DLU: 77

551.687-010 BONE PICKER (chemical)

    Picks bones from offal as it passes on conveyor belt and tosses bones onto conveyor.
GOE: 06.04.34 STRENGTH: L GED: R1 M1 L1 SVP: 1 DLU: 77

551.687-014 BRINE MAKER II (chemical)

    Weighs and adds specified quantities of chemicals to brine to purify solution preparatory to further treatment and refining of salt: Weighs chemicals, such as soda ash and lime, using scale, and pours them into brine tank. Removes residue from tank, using water hose and pumps. Dissolves specified tonnage of unprocessed salt in water to produce brine.
GOE: 06.04.11 STRENGTH: L GED: R2 M1 L1 SVP: 3 DLU: 77

551.687-018 DYNAMITE RECLAIMER (chemical) alternate titles: waste-house operator

    Screens dynamite sweepings and broken cartridge shells to reclaim usable dynamite: Shovels floor sweepings and broken shells from powder buggy onto brass screen, using wooden shovel. Picks out foreign matter, such as paper and wood splinters, sifts explosive material from broken or malformed cartridges, and discards debris. Rubs dynamite through screen, using gloved hand. Shovels or dumps reclaimed dynamite into powder buggy for reprocessing.
GOE: 06.04.34 STRENGTH: H GED: R2 M1 L1 SVP: 2 DLU: 77

551.687-022 LABORER, COOK HOUSE (chemical)

    Performs any combination of following duties to process stock (animal skins, splits, fleshings, and trimmings) for use in making glue or gelatin: Moves stock to kettle upon signal from COOK (chemical), using handtruck, and dumps stock into kettle. Turns valve to fill kettle with water to submerge stock. Skims grease from surface of water in kettle, using skimmer. Cleans kettle, using shovel, brushes, and water. Packs bottom of kettle with excelsior used to filter broth drained from kettle.
GOE: 06.04.34 STRENGTH: H GED: R1 M1 L1 SVP: 2 DLU: 77

551.687-026 NAPHTHALENE-OPERATOR HELPER (steel & rel.)

    Assists NAPHTHALENE OPERATOR (steel & rel.) in separating naphthalene from chemical drain oil used to wash coke-oven gas or tar distillants: Shovels crystallized naphthalene from cooling pans into wheelbarrow. Breaks up large pieces of naphthalene, and transports material to centrifugal drier. Performs other duties as described under HELPER (any industry) Master Title.
GOE: 06.04.34 STRENGTH: H GED: R1 M1 L1 SVP: 2 DLU: 77

551.687-030 SIFTER (pharmaceut.)

    Sifts residue from tablet processing machines to salvage usable tablets and powder for reprocessing: Selects sieve according to size tablet being processed. Dumps residue from pail into sieve and picks out foreign matter and usable tablets. Places tablets in container and discards foreign matter. Shakes sieve to sift powder onto paper and pours powder into container. Weighs residue and records weight and identifying information on worksheet.
GOE: 06.04.34 STRENGTH: L GED: R2 M1 L1 SVP: 2 DLU: 77

551.687-034 SODA-ROOM OPERATOR (plastic-synth.) alternate titles: mercerizer; soaking-room operator; steeping-press operator

    Guides sheets of woodpulp, used in rayon production, as they are lowered mechanically into steeping presses or vats of caustic soda and pressed to remove excess alkali. May weigh specified number of sheets, using scales. May convey woodpulp to steeping machine, using handtruck.
GOE: 06.04.19 STRENGTH: M GED: R1 M1 L1 SVP: 2 DLU: 77

552 DISTILLING OCCUPATIONS

    This group includes occupations concerned with heating a mixture to vaporize the more volatile parts and separate them from the less volatile, and then cooling and condensing the vapor to produce a nearly pure or refined substance.

552.132-010 SHIFT SUPERINTENDENT, CAUSTIC CRESYLATE (chemical)

    Supervises and coordinates activities of workers engaged in treating and distilling caustic cresylate to produce variety of cresol products: Observes recording-instrument charts, flowmeters, and gauges to verify process conditions. Correlates instrument readings and test results to diagnose malfunctions in process. Trains workers in procedures for correcting machine malfunctions and in specifications for process changes. Inspects equipment for mechanical defects and malfunctions, such as leaks and excessive wear. Performs other duties as described under SUPERVISOR (any industry) Master Title.
GOE: 06.02.11 STRENGTH: L GED: R4 M3 L3 SVP: 8 DLU: 77

552.362-010 MONOMER-PURIFICATION OPERATOR (chemical)

    Controls caustic-wash purification units to remove chemical inhibitors from butadiene and styrene monomers to prevent spontaneous polymerization during storage and transit: Starts pumps and injectors to recycle caustic solution through wash tank and mix liquid monomer with caustic solution. Reads gauges and laboratory analysis reports and adjusts controls to regulate mixing and separating of purified monomer and caustic solution containing inhibitor, according to plant standard. Drains caustic solution from wash tank and piping system and pumps cleaning solution through system to remove impurities.
GOE: 06.02.11 STRENGTH: L GED: R3 M2 L2 SVP: 5 DLU: 77

552.362-014 OXYGEN-PLANT OPERATOR (chemical)

    Controls fractionating columns, compressors, purifying towers, heat exchangers, and related equipment to extract nitrogen and oxygen from air for industrial and therapeutic use: Turns valves in specified sequence to control flow of air through series of units that compress and liquefy it, remove carbon dioxide and impurities, and separate resulting product into nitrogen and oxygen. Observes pressure, temperature, level, and flow gauges to ensure standard operation. Tests oxygen for purity and moisture content at various stages of process, using burette and moisture meter. Adjusts equipment according to test results and knowledge of process and equipment. Opens valves to transfer liquid or gaseous oxygen through heat exchanger to cool air, to heat and vaporize liquid oxygen, and to store gaseous or liquid oxygen in storage tanks at specified temperature and pressure. Turns valves to transfer compressed oxygen to storage cylinders. Cleans and repairs equipment, such as replacing defective valves and removing carbon from valves, using handtools and airhose. Records gauge readings and test results. May open valves to convey hot nitrogen through alternate batteries of driers to remove moisture. May clean and refill drier with activated alumina. May operate equipment to extract, compress, and liquefy hydrogen from natural gas and be designated Liquid-Hydrogen-Plant Operator (chemical).
GOE: 06.02.11 STRENGTH: L GED: R3 M3 L3 SVP: 4 DLU: 78

552.362-018 RECOVERY OPERATOR (paper & pulp)

    Controls evaporators, furnaces, and dissolving tanks to recover sodium compounds from chemicals spent in paper manufacturing processes: Patrols area around recovery units, observing recording devices and indicators on panelboards, flow of chemicals through units, and color of flame in furnaces to detect variations in pressure and temperature of evaporators, determine solid content of evaporated liquor, and detect incomplete burning of liquor in furnace. Turns rheostats to regulate pressure and temperature of evaporators, temperature and rate that liquor is sprayed into furnaces, and rate that molten sodium compounds are transferred from furnace to dissolving tanks. Tests solution at various stages of processing for specific gravity and titration, using testing devices. Adjusts and resets control instrument proportional bands on control board. Records meter readings at specified intervals on progress chart.
GOE: 06.02.11 STRENGTH: L GED: R4 M3 L3 SVP: 5 DLU: 77

552.362-022 STILL OPERATOR, BATCH OR CONTINUOUS (chemical) alternate titles: purification operator; rectifying operator

    Controls batch stills or continuous stills and auxiliary equipment from instrumented control board or other control station to separate and condense liquids having close volatilization points, maintaining process control according to instrument readings, test results, and knowledge of equipment and procedure: Reads charge sheet to determine types and quantities of materials to be distilled, specified sequence of operations, and control settings for attainment of prescribed fractionation. Starts pumps and turns valves to admit volatile liquids into still. Observes pressure and temperature gauges and moves controls to specified settings to attain volatilization rate consistent with efficient and safe operation, according to knowledge of process and equipment. Moves controls to maintain specified operating equilibrium in condensers and still auxiliaries, and to set reflux rate for recycling maximum portion of distillate through equipment consistent with efficient operation. Draws sample of product for laboratory analysis, or performs standard refractometric, boiling-range, colorimetric, titration, or specific quantity analyses to determine effectiveness of distillation. Turns valves and starts pumps to route distilled fractions to receiving tanks according to correlation of data from laboratory tests or observation of product color. Records data computed from instrument readings and test results, such as weight of product and yield. May direct activities of other workers who assist in operation of stills and auxiliary equipment. May be designated according to distilled product as Alcohol-Still Operator (chemical). May be designated according to type of still operated as Batch-Still Operator (chemical) II; Continuous-Still Operator (chemical).
GOE: 06.02.11 STRENGTH: L GED: R4 M3 L3 SVP: 6 DLU: 77

552.382-010 PYRIDINE OPERATOR (steel & rel.) alternate titles: pyridine-recovery operator

    Controls equipment, such as washers, rectifiers, condensers, and mixing tanks arranged in series to recover pyridine sulfate from tar oils: Prepares solutions of diluted sulfuric acid and sodium carbonate to specified concentration by adding water. Pumps solutions into system to dissolve pyridine and neutralize acids. Starts pumps to circulate batch through system, observing gauges and other instruments. Removes tarry compounds dissolved in pyridine sulfate solution by rectifying (boiling) solution with steam. Samples products for analysis, and interprets results and makes adjustments to control quantity and quality of product according to laboratory report. Inspects equipment, and steams out lines, changes charts, lubricates equipment, and makes minor repairs and adjustments.
GOE: 06.02.11 STRENGTH: M GED: R3 M3 L3 SVP: 6 DLU: 77

552.462-010 DISTILLATION OPERATOR (chemical) alternate titles: purification operator

    Operates batch or continuous still to separate intermediate products or impurities from coal tar compounds: Charges still and starts flow of coal tar compound through still units. Turns control valves and observes recording instruments and gauges to attain temperatures, material flow rate, pressure, or vacuum specified for distillation of designated product. May compute variances between laboratory analysis and product specifications, using prescribed formula to determine temperature and flow-rate adjustments. May observe gauges or use measuring rod to verify quantities of chemical materials in feed and hold tanks of still unit. May direct activities of helpers. May be designated according to product distilled as Naphthalene-Still Operator (chemical); Tar-Heater Operator (chemical).
GOE: 06.02.18 STRENGTH: M GED: R4 M3 L3 SVP: 6 DLU: 77

552.682-010 DISTILLER I (chemical) alternate titles: refining-still operator; still tender

    Operates stills to refine crude wood turpentine obtained by destructive distillation and steam distillation process: Regulates flow of crude wood turpentine into stills and regulates steam used to heat stills. Observes progress of stills and at specified time during process diverts distilled products (wood turpentine, pine oils, resin oils) into tanks.
GOE: 06.04.11 STRENGTH: L GED: R3 M2 L2 SVP: 5 DLU: 77

552.682-014 DISTILLER II (chemical)

    Controls continuous still equipment to distill pine oleoresin into oil of turpentine and rosin: Turns valves to transfer heated oleoresin from melting vats into cleaning, filtering, and washing tanks to clean, filter, and wash trash, foreign matter, and other impurities from resin preparatory to distillation. Pours specified amounts of oxalic acid into tanks to facilitate cleansing process, using graduated cylinder. Drains impurities from wash tanks and starts pump that forces resin into still. Turns valve to circulate water through steam jackets. Observes temperature gauge and turns valve to regulate heat to specified temperature to condense turpentine vapors. Turns valve to drain rosin from still. Observes sample of distillate for clarity and separation of turpentine from oleoresin to determine completion of distillation. Occasionally replaces filters in tank and cleans tank as necessary.
GOE: 06.02.11 STRENGTH: L GED: R3 M2 L2 SVP: 4 DLU: 77

552.682-018 EXTRACTOR OPERATOR (chemical) alternate titles: digester operator

    Operates digesters in steam distillation process to extract crude turpentine from wood: Regulates flow of steam through digesters. Gives directions to EXTRACTOR-OPERATOR HELPER (chemical) engaged in filling digesters with wood chips and dumping spent wood from digester.
GOE: 06.04.18 STRENGTH: L GED: R3 M2 L2 SVP: 5 DLU: 77

552.685-010 ACETONE-RECOVERY WORKER (plastic-synth.)

    Tends equipment to recover acetone, used in acetate rayon manufacture, from vapor produced by dry spinning (forming) of rayon filaments: Turns valves to admit vaporized acetone from spinning units to recovery system and to maintain cooling coils in condenser at specified temperature for efficient acetone recovery. May pump recovered acetone to storage tanks or recirculate it to mixing machines in which cellulose acetate flakes are dissolved to form spinning solution.
GOE: 06.04.11 STRENGTH: L GED: R2 M1 L2 SVP: 3 DLU: 77

552.685-014 BATCH-STILL OPERATOR I (chemical) alternate titles: distiller

    Tends batch stills to separate, by distillation, liquids having divergent volatilization temperatures: Pours specified types and quantities of materials into still. Observes thermostat and sets controls on instrument panel to maintain specified volatilization temperatures throughout distillation cycle and to control condensation of components. Draws samples of distilled liquids for laboratory analysis or performs refractometric or other tests, using standard procedure and equipment. Observes color of distillate to determine when distillate is completed. Records operating data, such as weight, yield of products, gauge readings, and number of batches distilled. May tend continuous-flow vacuum still. May be designated according to product distilled or formed as Ammonia-Still Operator (chemical); Crystallizer Operator (chemical) II; Degreasing-Solution Reclaimer (chemical); Glycerin Operator (soap & rel.).
GOE: 06.04.11 STRENGTH: L GED: R3 M2 L2 SVP: 4 DLU: 77

552.685-018 BATH-MIX OPERATOR (plastic-synth.)

    Tends still that purifies solvents used in processing plastics: Screws drain valves into chemical drums and lifts drum onto rack, using hoist. Dumps contaminated solvents into still, and turns steam valve to vaporize impurities and reclaim solvents. Cleans empty drums, using brush and solvent and moves them to storage on handtruck.
GOE: 06.04.11 STRENGTH: H GED: R2 M1 L1 SVP: 2 DLU: 77

552.685-022 RETORT-CONDENSER ATTENDANT (chemical)

    Tends retort vapor condensers used in destructive distillation of wood: Starts pump that discharges contents of receiving tanks into settling tanks. Caulks doors of retort if leak occurs. Turns valves on gasline or oil line to supply fuel to burners or to control temperature in retort.
GOE: 06.04.19 STRENGTH: L GED: R3 M2 L2 SVP: 3 DLU: 77

552.685-026 STILL TENDER (any industry)

    Tends flash-type still that reclaims or separates liquids, such as solvents, through volatilization and condensation: Starts pump to draw liquid into tank and allows impurities to settle. Turns valve to transfer liquids into still. Observes temperature gauge and adjusts valve to heat liquid to specified temperature and vaporize liquid in tank. Turns valve to circulate water through tank jackets to condense vapors. Observes distillate for clarity, through pipeline viewer. May be designated according to liquid recovered as Solvent Recoverer (plastic-synth.).
GOE: 06.04.19 STRENGTH: L GED: R3 M2 L2 SVP: 3 DLU: 77

552.685-030 STILL-OPERATOR HELPER (chemical)

    Tends distillation units and auxiliary equipment to separate volatile chemical compounds into specified components, performing combination of following tasks under direction of equipment operator: Turns valves and starts pumps as directed. Records temperature, pressure, and flow indicator readings. Measures liquid in tanks, using gauging rod or tape, and draws samples for laboratory analysis. Inspects pipes for leaks. Moves controls to start semiautomatic still auxiliaries, such as heat exchangers, stripping columns, vaporizers, flash tanks, and condensers, and to maintain specified operating equilibrium in equipment as directed. Assists STILL OPERATOR, BATCH OR CONTINUOUS (chemical) in transferring equipment and materials. Cleans equipment, using hose, brushes, and scrapers. May tend equipment to produce gas leak detectant odorants and be designated Second Operator (chemical).
GOE: 06.04.11 STRENGTH: H GED: R3 M2 L2 SVP: 3 DLU: 77

552.686-010 EXTRACTOR-OPERATOR HELPER (chemical)

    Feeds wood chips into digesters used in steam distillation process for extracting crude turpentine: Seals cover to opening at bottom of digester. Starts conveyor to fill digester with wood chips through charging hole at top. Seals cover to charging hole. Removes cover on hole at top of digester to dump spent wood from digester at end of extraction process.
GOE: 06.04.18 STRENGTH: M GED: R2 M1 L1 SVP: 2 DLU: 77

552.687-010 DISTILLATION-OPERATOR HELPER (chemical)

    Starts pump to transfer coal tar distillates to storage or processing tanks. Dips measuring rod into tanks to verify quantities of distillates in tanks. Moves neutralizing chemicals to work area preparatory to charging of still, using handtruck.
GOE: 06.04.40 STRENGTH: M GED: R2 M1 L1 SVP: 2 DLU: 77

553 HEATING, BAKING, DRYING, SEASONING, MELTING, AND HEAT-TREATING OCCUPATIONS

    This group includes occupations concerned with removing moisture from material by exposure to heat, air, vacuum, or desiccants; exposing material to heat to facilitate its processing by others, liquefy solids or gases, change chemical composition, effect texture and consistency, or remove solvents or other undesirable components.

553.132-010 SUPERVISOR, GREASE REFINING (oils & grease)

    Supervises and coordinates activities of workers engaged in extracting and refining grease produced by cooking glue stock and in converting tankage to fertilizer: Estimates weight and type of tankage or grease in process and specifies amount of acid to be used. Examines refined grease to ensure specified level of clarity. Directs blending of grease according to formula and loading of grease into tank cars. Records amounts of grease refined, blended and shipped, amounts of acid used, and moisture content of each batch of fertilizer. Trains workers in operation of cookers. Performs other duties as described under SUPERVISOR (any industry) Master Title.
GOE: 06.02.01 STRENGTH: L GED: R4 M3 L3 SVP: 7 DLU: 77

553.362-010 BELT-PRESS OPERATOR I (rubber goods)

    Sets up and operates single- or double-deck platen curing press to cure transmission or conveyor belting: Gives directions to workers engaged in setting up press according to specified width of belt, pressure, temperature, and curing time. Positions guide stops in press to accommodate height of belt to be cured. Inspects sections of press for conformity to specifications and verifies temperature and time settings. Observes machine operation to detect malfunction. Signals OVERHEAD CRANE OPERATOR (any industry) 921.663-010 to lift and position belt rolls in work area.
GOE: 06.02.13 STRENGTH: H GED: R3 M2 L2 SVP: 5 DLU: 77

553.362-014 AUTOCLAVE OPERATOR (aircraft mfg.) alternate titles: bonding equipment operator

    Sets up and operates autoclaves and auxiliary equipment to cure and bond metallic and nonmetallic aircraft parts and assemblies according to specifications: Reads and interprets shop orders and authorization documents to determine bonding process specifications. Selects parts and assemblies for simultaneous bonding, based on similarity of processing requirements and autoclave capacity. Arranges jigs and fixtures containing parts and assemblies on bonding racks and positions racks in autoclave, manually or using equipment, such as hoist, forklift, or tow. Inspects general condition of parts and assemblies, examines positioning of parts and assemblies in jigs and fixtures, and verifies that vacuum bag installation conforms to specifications prior to bonding. Connects thermocouples and vacuum lines to fittings on jigs and fixtures and inside autoclave. Adjusts manual controls or enters commands in computerized control panel to regulate and activate autoclave power supply, cooling system, vacuum, heat, and pressure gauges and recorders, and to close interlocking autoclave doors. Monitors instruments, switches, and recorders and listens for warning signals during autoclave operation to ensure conformance to specifications, and modifies or aborts process as required. Maintains manual or computerized autoclave processing records. Operates curing ovens and presses with heated platens [METAL-BONDING PRESS OPERATOR (aircraft mfg.) 553.382-026] to cure and bond parts. Suggests methods or procedures for improved operations to supervision or liaison personnel. Discusses loading, unloading, and operation of autoclaves and auxiliary equipment with other operators and workers to ensure safety of individuals working in and around high-pressure autoclaves. May calibrate autoclave system components.
GOE: 06.02.18 STRENGTH: M GED: R4 M3 L3 SVP: 6 DLU: 88

553.364-010 SAMPLE TESTER (chemical)

    Tests samples of phosphoric acid, according to prescribed standards, to determine chemical and physical characteristics of acid for purposes of quality control, process control, and conformity to specifications: Mixes specified amounts of processed acid with control chemicals in flask, shakes flask to mix them, pours solution into container of colorimeter to determine strength of acid, and records results of test. Determines specific gravity of acid in slurry, using water vacuum equipment and hydrometer, and records results of test. Determines specific gravity of final product, using hydrometer, and records results of reading. Notifies operators of changes in their processes that affect quality of final product. Bottles and labels samples taken at various stages of processing for laboratory analysis. Cleans laboratory and equipment after each test run and at end of shift.
GOE: 02.04.01 STRENGTH: L GED: R3 M2 L3 SVP: 5 DLU: 77

553.382-010 AUTOCLAVE OPERATOR I (chemical)

    Controls autoclave (high-pressure tank) to process liquid, solid, and gaseous ingredients into chemical products according to specifications: Reads production schedule to determine product, ingredients, temperature, pressure, and duration of process. Turns valves to load liquid ingredients into tank. Weighs out and dumps solid ingredients and catalyst into equipment, and turns steam and coolant valves to heat mixture to specified temperature. Turns valves to displace accumulated gases to avoid explosion. Closes vent to seal autoclave. Sets dials to control pressure and flow of gaseous material through mixture. Opens vent to admit product into load tank. Connects drain line from load tank to filter press, using handtools, and starts pumps to force product through press to separate catalyst. Drains product into drum and starts pumps to transfer catalyst to load tank for reuse. May test samples of materials produced, using refractometer or other standard test equipment, to ensure attainment of specified product.
GOE: 06.02.11 STRENGTH: H GED: R3 M2 L2 SVP: 5 DLU: 77

553.382-014 BOILER (soap & rel.)

    Controls kettles to boil soap ingredients, such as lye, resin, palm oil, and tallow, to specified consistency: Opens valves to fill kettle with ingredients in specified amounts, and weighs and dumps ingredients in kettle, using scale. Opens steam valve to heat kettle to specified temperature. Observes boiling rate, reads temperature gauges, and turns valves to maintain temperature within critical limits. Boils ingredient for specified time and draws and tests sample for consistency, specific gravity, and chemical content, using laboratory equipment, such as hydrometer. Starts pumps and opens valves to transfer mixture to storage tanks. May stir ingredients with paddle.
GOE: 06.02.18 STRENGTH: L GED: R4 M3 L3 SVP: 7 DLU: 77

553.382-018 EVAPORATOR OPERATOR I (chemical) alternate titles: multiple-effect evaporator operator; vacuum-pan operator

    Controls single-stage or multiple-effect evaporators to concentrate chemical solutions to specified density by evaporation: Starts pumps and turns valves to admit liquid solution, steam, and cooling water into system. Observes temperature, pressure, and vacuum gauge readings and adjusts pumps to conform to specifications. Turns feed valves to regulate flow of solution through system and to obtain specified concentration. Tests solution pumped from last effect, using hydrometer, to ascertain that solution is concentrated to specified density. Observes manometers and looks through sight glass to ensure that steam vapors are not carried to next effect with solution. Tests steam condensate with reagents to detect contaminated solution. May control equipment from instrumented control board. May tend equipment, such as preheaters, thickeners, settlers, and filters, that prepare solution for evaporation. May clean evaporator shell and tube nest with chemical to remove scale. May operate multiple-effect unit as one or more single evaporators.
GOE: 06.02.11 STRENGTH: L GED: R4 M3 L3 SVP: 6 DLU: 77

553.382-022 VARNISH MAKER (paint & varnish) alternate titles: varnish blender; varnish cooker; varnish melter

    Controls equipment to melt, cook, and mix ingredients, such as gums, oils, turpentine, and naphtha, for use in manufacture of varnishes: Weighs gum and dumps it into gum pot or agitator tank over burner. Pours in oil, as gum becomes liquid, and adjusts burner controls to regulate heat. Controls burners to cook mixture for specified time. Starts pump to transfer varnish base and thinner into reducing tank. Starts agitator to mix base and thinner for specified time. Fills test tube with varnish and compares viscosity with standard sample, or delivers test tube to laboratory for test. Pumps varnish through filter press to remove sediment from varnish.
GOE: 06.02.11 STRENGTH: M GED: R3 M2 L2 SVP: 5 DLU: 77

553.382-026 METAL-BONDING PRESS OPERATOR (aircraft mfg.) alternate titles: platen operator, metal bond

    Sets up and operates hydraulic press equipped with heated platens to bond metal aircraft and space vehicle parts and assemblies: Reads blueprints and shop orders to determine areas of parts to be joined, amount of bonding agent to apply, and temperature and pressure required. Examines parts or assemblies for surface defects and positions parts on machine bed, using jigs or fixtures. Applies adhesives to surfaces to be bonded. Installs thermocouple leads to machine, using handtools. Starts machine and adjusts controls to regulate pressure, heat, and curing time. May assemble parts prior to aligning them in machine. May operate autoclaves and ovens to cure and bond parts and assemblies [AUTOCLAVE OPERATOR (aircraft mfg.) 553.362-014].
GOE: 06.02.02 STRENGTH: M GED: R3 M2 L2 SVP: 5 DLU: 87

553.385-014 PRIMER EXPEDITOR AND DRIER (chemical)

    Tends vacuum tank that dries priming mixture, and dries and stores loaded cartridge primers and primed rim-fire cartridge cases: Transfers trays or boards filled with explosive primers or cases from loading room to steam-heated dryhouse, using shockproof cart. Places filled trays in numbered racks or bins. Reads gauges and turns valves to control temperature in dryhouse. Collects primers and cases from storage to fill requisitions and keeps perpetual inventory. Loads primers on screen trays of vacuum tank and starts vacuum pump, steam heat, and fans that force-dry priming mixture when requisitions do not permit sufficient time for air drying. May deliver primers and cases to production departments and record date, lot number, and grade.
GOE: 06.04.11 STRENGTH: L GED: R2 M1 L2 SVP: 3 DLU: 77

553.462-010 FLASH-DRIER OPERATOR (chemical)

    Controls flash-drier furnace and auxiliary equipment to remove water from activated carbon slurry, for use in industrial and consumer applications: Tests specific gravity of carbon slurry in agitator tank, using hydrometer, and draws sample for acidity testing by WASH OPERATOR (chemical). Admits water and dumps prescribed amount of caustic into slurry tank to bring density and acidity readings to prescribed standard. Turns valve to heat slurry to specified temperature and starts pumps to transfer slurry to vacuum drum filter. Adjusts gate leading to paddle mixer to regulate flow of slurry to furnace. Sets automatic controls to maintain furnace temperature at plant standard. Moves switches and turns valves to regulate furnace blowers and cyclone filters that control flow and discharge dried carbon. Directs activities of workers engaged in tending filter and carbon-bagging machines. Weighs carbon samples taken from furnace discharge spouts and computes percentage of moisture removed, using standard formula. Keeps log of gauge readings and test results. Verifies setup of scraper blade on filter drum for efficient operation. May turn fuel valves to regulate furnace conditions in manually controlled units, according to specifications.
GOE: 06.02.18 STRENGTH: M GED: R3 M2 L2 SVP: 4 DLU: 77

553.482-010 AGER OPERATOR (plastic-synth.)

    Controls continuous process equipment to age alkali cellulose for use in cellophane manufacture: Takes wet and dry-bulb temperature readings in air ducts through which cellulose will pass on conveyor and calculates humidity in ducts, using graphs. Reads instruction tables to determine setting of conveyor screws and belts under existing humidity conditions. Turns screws to adjust conveyor speed to regulate length of aging cycle, and to set humidistat that maintains specified humidity in ducts. Records operating data.
GOE: 06.02.13 STRENGTH: L GED: R3 M2 L2 SVP: 5 DLU: 77

553.486-010 CALCINE FURNACE LOADER (paint & varnish)

    Performs variety of duties to assist CALCINE-FURNACE TENDER (paint & varnish) in baking pigments to bring out color: Scoops dry blend of pigments from drums into clay saggers (pigment containers) and stacks saggers on bed of kiln. Positions kiln bed on hydraulic lift, using forklift. Moves controls of hydraulic lift to raise kiln bed into overhead kiln and secures bed in kiln. Removes bed from kiln on signal from CALCINE-FURNACE TENDER (paint & varnish) and empties saggers of calcined pigments into drum. Weighs and tags drum and moves it to storage area, using handtruck. May load saggers of dry blend onto revolving track of circular kiln for continuous-calcination process. Performs other duties as described under HELPER (any industry) Master Title.
GOE: 06.04.11 STRENGTH: H GED: R1 M1 L1 SVP: 2 DLU: 77

553.582-010 DRIER OPERATOR II (chemical) alternate titles: tunnel-drier operator

    Operates atmospheric tunnel driers that heat liquids or slurries to remove water or other volatile liquids: Moves controls to regulate preheaters, fans, and conveyor belts or other material feeding mechanisms to maintain continuous operation. Turns steam valves and sets automatic temperature controls to attain specified drying temperature. Observes temperature charts and conveyors to correct equipment malfunctions and jamming of feed or discharge conveyors. Examines and feels materials for moisture content or obtains sample for laboratory moisture analysis, and readjusts equipment controls to attain specified product. Stops drier units in sequence as material feed is exhausted. Records data, such as type and quantity of material dried and drying time. May tend continuous pan driers that automatically transfer materials through drier in pans on conveyor chains, and dumps dried contents after drying. May tend or feed auxiliary equipment, such as grinding mills and baling machines that process dried product. May be designated according to type of drier as Continuous-Conveyor-Screen Drier (chemical).
GOE: 06.02.11 STRENGTH: L GED: R3 M2 L2 SVP: 4 DLU: 77

553.582-014 POT FIRER (chemical)

    Controls heated pots to dehydrate concentrated caustic solution, according to operating procedures: Starts pumps and opens valves to admit specified quantity of caustic solution to pots. Reads pressure and flowmeters and charts, and turns valves to control flow of caustic liquor to prevent overflow in pots. Observes boiling rate and temperature recorders and turns valves or sets thermostat to maintain pot temperature within specified limits. Records flow, pressure, and temperature readings in operating log. May perform chemical tests on caustic and add reagents to facilitate production of standard product. May tend machine that flakes caustic soda [FLAKER OPERATOR (chemical; smelt. & refin.)]. May fire oil or gas furnaces under direction of STATIONARY ENGINEER (any industry).
GOE: 06.02.11 STRENGTH: L GED: R3 M2 L2 SVP: 5 DLU: 77

553.585-010 DEBUBBLIZER (plastic-synth.)

    Tends high-pressure heating equipment that removes internal solvent bubbles from nitrocellulose rod stock: Loads precut rods into cylinder chamber. Turns valves to fill cylinder with hot water and admit steam into cylinder jacket. Observes gauges and turns valves to regulate temperature and pressure. Turns valves to drain water, reduce pressure, and refill cylinder with coolant to set softened and compressed stock. Drains coolant from cylinder and removes debubblized rods from cylinder chamber. Records number and type of rods processed.
GOE: 06.04.13 STRENGTH: M GED: R2 M1 L1 SVP: 3 DLU: 77

553.585-014 DRY-HOUSE ATTENDANT (chemical)

    Tends drying room in which pyrotechnics (fireworks) are cured, dried, or stored: Stores trays of pyrotechnics on racks according to date of processing. Observes room thermometers and moves controls of blower heater to keep drying room temperature within prescribed limits. Issues stored pyrotechnics to workers according to date of processing or removes materials at expiration of specified period and stores them in metal containers for further processing.
GOE: 06.04.11 STRENGTH: M GED: R2 M1 L1 SVP: 3 DLU: 77

553.585-018 DRYING-ROOM ATTENDANT (soap & rel.) alternate titles: drier tender

    Tends equipment in steam-heated drying room that dries and hardens bar soap: Pushes racks of soap into and out of room according to prescribed schedule. Turns and adjusts steam valves to heat and maintain room at specified temperature. Starts electric dolly that moves soap racks through drying chamber. Records number of racks processed.
GOE: 06.04.19 STRENGTH: M GED: R1 M1 L1 SVP: 2 DLU: 77

553.585-022 THERMAL MOLDER (rubber goods) alternate titles: heater tender

    Tends steam heaters or presses that shape and cure rubber floor mats: Positions sheets of precut calendered rubber on molds. Turns valve to activate vacuum fixtures that draw and hold rubber against contours of molds. Examines molds to ascertain that rubber sheet covers mold and smooths out wrinkles. Removes excess rubber from mold, using knife or roller. Pushes switch to close press and move heater carriage into heater. Turns valve to admit steam and sets timer for specified curing time. Strips cured mats from mold. Examines mats for defects, such as discoloration, misforming, blisters, and cracks. Marks defective mats for repair and places them on skids.
GOE: 06.04.13 STRENGTH: M GED: R2 M1 L2 SVP: 3 DLU: 77

553.585-026 TUMBLER OPERATOR (rubber goods)

    Tends tumblers that dry, treat, and screen latex prophylactics preparatory to testing: Weighs and keeps each batch separate. Dumps batch into drying, treating, and screening tumblers, following specified sequence. Adds treating agents, such as oil emulsion, cornmeal, and lycopodium, to treating tumbler for finishing. Dumps finished batch into container and identifies batch with date, time, type, and number, and sets batch aside for testing. Records temperature and humidity gauge readings, treating agents used, and number of batches tumbled.
GOE: 06.04.13 STRENGTH: M GED: R2 M1 L1 SVP: 2 DLU: 77

553.665-010 BELT-PRESS OPERATOR II (rubber goods)

    Tends section of single- or double-deck platen press to cure rubber transmission and conveyor belting under direction of BELT-PRESS OPERATOR (rubber goods) I 553.362-010, working as crewmember: Positions guide stops in press to cure belting to specified thickness and width. Sprays press with solution to prevent adherence to belt during cure. Helps crew pull belt from roll onto press. Lifts empty roll shell onto $T3windup rack$T1 and adjusts guides and speed of windup as belt goes onto roll after cure. Adjusts knives to trim rind from belt. May guide belt over pricker roll prior to going into windup after cure. May signal OVERHEAD CRANE OPERATOR (any industry) 921.663-010 to lift and position belt rolls from windup rack to storage area.
GOE: 06.04.13 STRENGTH: H GED: R2 M1 L1 SVP: 3 DLU: 77

553.665-014 BLACK-MILL OPERATOR (chemical)

    Tends furnace and shaker screens to produce boneblack animal charcoal from ground bones: Turns dial on control panel to start feed of ground bones to furnace and turns handwheel to adjust oscillating speed of shaker screens to maintain uninterrupted production. Observes recording thermometer to verify specified temperature in furnace. Inspects conveyors, vibrating feeders, and shaker screens for clogging or malfunction. Tightens drive belts, using wrenches and other handtools. Gives directions to other workers in spreading boneblack over cooling floor and in loading cooled boneblack onto conveyors.
GOE: 06.04.19 STRENGTH: L GED: R3 M2 L2 SVP: 4 DLU: 77

553.665-018 COOK (chemical) alternate titles: extractor; hide-cooking operator

    Tends equipment that cooks animal stock (animal skins, splits, fleshings, and trimmings) used to make glue or gelatin: Signals workers to fill kettle with stock. Turns valve to allow water to flow into kettle to submerge stock. Starts heaters and adjusts temperature. Cooks stock for prescribed period of time and tests sample of broth for specific gravity, using hydrometer. Compares hydrometer readings with readings on conversion tables to determine approximate amount of glue or gelatin that batch will produce. Drains broth from vat to storage tank, refills kettle with water, and cooks stock several times at progressively higher temperatures. May stir stock in kettle, using wooden paddles. May tend equipment to wash stock prior to cooking [WASH-MILL OPERATOR (chemical)].
GOE: 06.04.19 STRENGTH: L GED: R3 M2 L2 SVP: 3 DLU: 77

553.665-022 COOKER TENDER (oils & grease)

    Tends cookers that melt grease and tallow from offal, bone, and meat: Turns valves to admit steam to cooker (steam-jacketed tank equipped with revolving, power-driven paddles for agitating material) until indicator on steam pressure gauge reaches specified point. Turns handwheel or lifts lever to open discharge gate of cooker when light indicates material is ready for further processing. Starts (reverses) agitator paddles that force cooked material into vat or conveyor hopper. Signals COOKER LOADER (oils & grease) or OVERHEAD CRANE OPERATOR (any industry) 921.663-010 to refill cooker. May shovel cooked material from vat into conveyor hopper. May load cookers. May pull material from cooker, using hoe.
GOE: 06.04.19 STRENGTH: H GED: R2 M1 L1 SVP: 2 DLU: 77

553.665-026 DRIER OPERATOR I (chemical) alternate titles: atmospheric-drier tender; dry-room operator

    Tends cabinet or room-type driers that heat liquids or slurries to remove water or other volatile liquid components: Shovels or dumps materials into pans and places them on drier shelves, in racks, or on wheeled trucks that are pushed into drier. Observes thermometer and humidity gauge, turns steam or fuel valves, and moves controls to maintain temperature, humidity, and air circulation in drier, according to specifications. Shuts down drier at end of drying cycle or on notification by control laboratory. Unloads driers or notifies other workers to remove dried material. May weigh dried materials and fill bags or other containers. May feel materials to ascertain dryness.
GOE: 06.04.11 STRENGTH: H GED: R2 M1 L1 SVP: 3 DLU: 77

553.665-030 DRUM-DRIER OPERATOR (chemical)

    Tends drum drier that dries activated carbon sludge, used in variety of industrial and consumer applications: Sets drier controls and starts sludge pumps and agitators to dry product that meets prescribed standard. Turns valves to increase water content of sludge to prevent caking, according to hydrometer readings supplied by other workers.
GOE: 06.04.19 STRENGTH: L GED: R2 M1 L1 SVP: 3 DLU: 77

553.665-034 FIRER HELPER (paper & pulp)

    Tends equipment that burns condensed black liquor into black ash: Turns valves to regulate spray of black liquor into cyclone drier and flow of air through drier to dry black liquor to specified concentration. Determines moisture content of liquor, using moisture testing equipment. As directed, turns rheostat to adjust mechanism in mixing tank to feed salt cake into black liquor prior to burning. Turns valves as directed to channel steam into evaporators or into main line. Pushes $T3steam lance$T1 through boiler tubes or turns crank that rotates steam jets through boiler to blow out soot and sludge. Scrapes sludge from interior of furnace, using scraper and rake.
GOE: 06.04.14 STRENGTH: L GED: R2 M1 L1 SVP: 2 DLU: 77

553.665-038 HEATER TENDER (rubber goods; rubber reclaim.; rubber tire) alternate titles: curer; rubber curer; vulcanizer operator

    Tends equipment, such as cylindrical ovens, horizontal pot heaters, tunnel driers, or atmospheric heaters that shrink, cure, or remove moisture from natural or synthetic rubber materials or products: Loads or feeds rubber materials or products, such as sheets of raw rubber, devulcanized scrap rubber, rubber coated fabric, or rubber products into oven, using trays, racks, handtrucks, or conveyors. May lift fabric rolls onto $T3letoff rack$T1 of heater, using hoist, and thread fabric between feed rollers and onto $T3takeup roll.$T1 May turn controls to regulate speed and amount of materials conveyed through heated chamber. Turns heater valves to admit steam or regulate temperature and to admit ammonia when specified. May start blowers to circulate air. Removes product or material from oven after specified time. May be designated according to product dried as Drier (rubber goods); Drier Operator (rubber reclaim.); Drier Tender (rubber goods).
GOE: 06.04.13 STRENGTH: M GED: R2 M1 L2 SVP: 2 DLU: 77

553.665-042 PLASTICS-SEASONER OPERATOR (plastic-synth.)

    Tends dry houses, cell driers, or drying ovens that remove solvent and contaminants from plastics materials: Observes temperature and moisture gauges and turns controls to control drying process. Unloads driers or notifies workers to unload ovens.
GOE: 06.04.13 STRENGTH: M GED: R2 M1 L1 SVP: 2 DLU: 77

553.665-046 STEAM-PRESS TENDER I (rubber goods)

    Tends press that cures rubber transmission and conveyor belting, as directed by BELT-PRESS OPERATOR (rubber goods) I, working as crewmember: Turns valves to obtain specified pressure and temperature, and sets timers on section of press. Verifies pressure, temperature, and timers on other sections of press, and notifies STEAM-PRESS TENDER (rubber goods) II of findings. Pulls belt into press from $T3letoff rack.$T1 Moves levers to open press. Participates in rolling belt onto $T3windup rack$T1 after cure.
GOE: 06.04.13 STRENGTH: H GED: R2 M1 L1 SVP: 4 DLU: 77

553.665-050 STEAM-PRESS TENDER II (rubber goods)

    Performs following duties to prepare press for curing transmission and conveyor belting, working as crewmember: Turns pressure valves, adjusts temperature controls, and sets timers on press sections, following directions of STEAM-PRESS TENDER (rubber goods) I. Pulls levers to open and close press. Positions shells in $T3windup rack$T1 and guides cured belt onto roll.
GOE: 06.04.13 STRENGTH: M GED: R2 M1 L1 SVP: 3 DLU: 77

553.665-054 TRAY-DRIER OPERATOR (chemical)

    Tends tray drier and drum filter that dries and filters activated carbon sludge used in variety of industrial and consumer applications: Turns dials and observes temperature and moisture gauges to control drying process. Pushes empty trays onto roller conveyor for filling with sludge and transferring filled trays to drier chamber in wheeled cage.
GOE: 06.04.19 STRENGTH: M GED: R2 M1 L1 SVP: 3 DLU: 77

553.682-010 BLACK-ASH-BURNER OPERATOR (paper & pulp)

    Controls furnace in which condensed black liquor is burned to black ash for use in recovering sodium compounds: Turns rheostat control to adjust mechanism in mixing tank to feed specified quantities of salt cake into black liquor. Turns valves and air intake ports to regulate spray of liquor and air into furnace, according to combustion charts, to ensure complete combustion of organic matter. Starts conveyor to carry molten black ash from taphole of furnace to water dissolving tank in which green liquor is formed, or opens furnace port allowing ash to flow directly into dissolving tank. Starts motor to pump green liquor into settling tank. Adjusts valves to channel steam generated by furnace through liquor evaporators or into main steam line. Cleans liquor pipes, using steam and rod, and scrapes residue from furnace interior.
GOE: 06.02.14 STRENGTH: L GED: R3 M2 L2 SVP: 4 DLU: 77

553.682-014 CURER, FOAM RUBBER (rubber goods)

    Operates conveyorized curing unit from control panel to process latex mixture into foam rubber sheeting: Starts pump to transfer latex and air into mixing tank to obtain latex of specified density. Weighs sample of latex in measuring cup to determine if density meets specifications. Pumps specified compounds into mixing tank with latex and starts agitators that mix ingredients. Starts belt conveyor and turns setscrews to adjust scraper bars for dimensions specified for rubber sheeting. Turns dial to regulate heat in curing ovens. Pumps latex mixture onto belt conveyor that carries it under scraper bars and through curing ovens. Verifies dimensions of cured rubber sheeting with rule.
GOE: 06.02.13 STRENGTH: L GED: R3 M2 L2 SVP: 4 DLU: 77

553.682-018 EVAPORATOR OPERATOR II (chemical)

    Operates evaporator to separate turpentine oils from rosin: Regulates valves and pump controls to pump specified amount of crude turpentine to evaporator. Regulates valves and pump controls to draw off vapors from evaporator, leaving rosin as residue.
GOE: 06.02.18 STRENGTH: L GED: R3 M1 L2 SVP: 4 DLU: 77

553.682-022 REDUCTION-FURNACE OPERATOR (chemical) alternate titles: catalyst operator

    Operates reduction furnaces and equipment to produce catalyst used in manufacture of margarine and shortening: Scoops powder into rotating reduction furnace that feeds it into mixing tank containing premeasured amount of oils. Observes gauges and regulates heating and mixing controls to ensure processing according to standards. Turns valves to pump finished product into holding tank. Opens valve to fill containers with catalyst. Keeps log of operations.
GOE: 06.02.15 STRENGTH: L GED: R3 M2 L2 SVP: 4 DLU: 77

553.682-026 V-BELT CURER (rubber goods)

    Operates automatic presses to cure rubber V-belts: Hoists uncured belts from storage rack arm, using lifting device and slides belts over collapsible curing drum. Aligns belts in individual V-shaped rings of drum, and pushes button to expand first drum segment. Realigns belts in rings and expands last segment. Brushes soap solution on air bag of drum-curing retainer and pushes button to insert loaded drum into retainer. Observes gauges and adjusts pressure and temperature valves and regulator arms to maintain specified curing conditions. Slides carrying device under belts where segments automatically break down when drum slides from retainer after cure. Forces carrying device between belts and stationary segment of drum to break belts loose. Lifts cured belts and slides belts onto rack arm. Changes drums and retainers, using hoist and handtools.
GOE: 06.02.13 STRENGTH: M GED: R3 M2 L2 SVP: 4 DLU: 77

553.684-010 HEAT WELDER, PLASTICS (plastic prod.) alternate titles: welder, plastic

    Fuses together plastic sheets, using hot-air gun to melt and join edges of sheets: Cuts sheets to be joined to form smooth edges, using knife. Sands edges, using power sander, to form V-joint. Places plastic rod in V-joint and activates hot-air gun to melt rod, causing mass to fill V-joint and join edges of sheets.
GOE: 06.04.31 STRENGTH: M GED: R2 M2 L1 SVP: 3 DLU: 77

553.684-014 NITROCELLULOSE OPERATOR (chemical)

    Screens and dries nitrocellulose to prepare it for use in making dynamite: Shovels nitrocellulose from drum onto nonsparking screen, using wooden shovel. Rubs nitrocellulose through screen by hand to remove foreign material. Spreads screened material on trays and places trays in drying chamber. Starts blower and tests drying material periodically, using moisture meter, to ensure that moisture content of nitrocellulose meets specifications. Scrapes dried material into fiber drums for delivery to dynamite mix house.
GOE: 06.04.34 STRENGTH: H GED: R3 M1 L1 SVP: 4 DLU: 77

553.685-010 AMMONIUM-NITRATE CRYSTALLIZER (chemical)

    Tends equipment that evaporates ammonium nitrate solution to form crystals used in making dynamite: Starts pump to move specified quantities of ammonium nitrate solution from storage tank to weighing tank. Opens valve to drain weighed solution into heated tub. Starts agitator to mix solution as water evaporates and turn material as it crystallizes. Weighs out and pours specified quantities of chemicals into tub to prevent hardening of ammonium nitrate and to ensure uniform crystallization, indicated by visual inspection. Opens gate in side of tub to transfer crystals to storage barrels.
GOE: 06.02.18 STRENGTH: M GED: R3 M2 L2 SVP: 4 DLU: 77

553.685-014 BAGGER (plastic prod.) alternate titles: vacuum-forming-machine operator

    Tends heating and vacuum equipment to cure preformed plastic parts: Positions part in plastic bag and seals bag with hot iron. Inserts vacuum tube in bag and seals bag around tube with tape. Places part on cart, connects vacuum line to tube to remove air from bag, and smooths bag around part with brush to ensure complete vacuum. Pushes cart into curing oven or places part in autoclave. Sets oven controls or turns air-pressure valve of autoclave, as specified, to cure part. Removes part and cuts away plastic bag, using knife. May form part by positioning plastic sheet and mold in plastic bag, heating sheet under lamps, and forcing conformation of sheet to mold by vacuum pressure of bag. May impregnate fabric with plastic resins and cut fabric into strips for use in laminating preformed part.
GOE: 06.04.13 STRENGTH: H GED: R2 M1 L1 SVP: 3 DLU: 77

553.685-018 BONE-CHAR KILN TENDER (chemical)

    Tends gas-fired kiln to reclaim char (activated carbon) used in filtering corn syrups: Observes thermometers and turns gas valves to heat and maintain specified temperatures in kiln. Starts conveyors that transfer char to and from kiln. Dumps sacks of char into kiln to replenish supply lost during firing process.
GOE: 06.04.19 STRENGTH: M GED: R2 M1 L1 SVP: 2 DLU: 77

553.685-022 BONE-DRIER OPERATOR (chemical) alternate titles: bone drier; dry-box operator; glue-bone drier

    Empties bone cooking tanks and tends oven that dries bones from which glue has been extracted: Opens bottom of bone cooking tank. Starts feed mechanism and rotary paddles of oven. Places rod into top of cooking tank and pushes bones through opening of tank bottom into feed mechanism of oven. When bones are dried, presses button to stop rotary action of paddle in oven. Moves lever and locking device to release oven door. Presses button to actuate paddles inside oven that push dried bones from oven into bags or onto cart. Loads filled bag onto handtruck and pushes truck or cart to storage area. May turn dials to regulate temperature of oven. May bag, weigh, and close bags containing dried bones.
GOE: 06.04.19 STRENGTH: M GED: R2 M1 L1 SVP: 2 DLU: 77

553.685-026 CADMIUM-LIQUOR MAKER (paint & varnish) alternate titles: liquor maker

    Tends equipment that makes cadmium sulfate used in making pigments for paints and enamels. Shovels cadmium $T3moss$T1 into tank of boiling water and sulfuric acid to form cadmium liquor. Tests liquor solution for acid and foreign content, as specified by laboratory.
GOE: 06.04.11 STRENGTH: H GED: R2 M1 L1 SVP: 2 DLU: 77

553.685-030 CALCINE-FURNACE TENDER (paint & varnish) alternate titles: kiln operator

    Tends kiln that develops color of pigments used in making paints and glass enamels: Moves controls to set automatic heat regulator that maintains specified temperature in kiln. Adjusts gas burners in kiln, using handtools, and lights pilot flames and burners. Raises kiln bed or signals CALCINE FURNACE LOADER (paint & varnish) to raise kiln bed, containing pigments, into kiln and to remove bed from kiln after specified time. May fill and empty saggers (pigment containers) [CALCINE FURNACE LOADER (paint & varnish)]. May tend crusher that breaks calcined chunks of pigment into smaller particles. May tend auxiliary equipment, such as coaler, conveyor systems, pump, and rotary vacuum filter.
GOE: 06.04.11 STRENGTH: H GED: R2 M1 L1 SVP: 3 DLU: 77

553.685-034 CONTINUOUS-LINTER-DRIER OPERATOR (chemical)

    Tends equipment that fluffs and dries cotton linters or woodpulp for further processing into explosives: Places portion of linters or woodpulp on revolving rollers that feed it into cylinder equipped with picking spikes. Inspects fluffed material for presence of impurities and fluffy appearance as it is discharged into drier. Moves controls to maintain temperature of hot-air oven at plant standard and to regulate speed of drier conveyor for efficient drying. When tending separate picking and drying units, may be designated according to unit tended as Cotton-Picker Operator (chemical); Linter-Drier Operator (chemical).
GOE: 06.04.19 STRENGTH: M GED: R2 M1 L1 SVP: 2 DLU: 77

553.685-038 CURING-OVEN TENDER (chemical)

    Tends ovens that cure fuels loaded (cast) into rocket-motor cases: Observes recording instrument charts and dials of timing devices to verify required temperatures and curing-cycle times. Turns valves to switch from automatic-instrument controls to manual control of steam-supply valves to regulate temperature.
GOE: 06.04.11 STRENGTH: L GED: R3 M1 L1 SVP: 4 DLU: 77

553.685-042 DRIER OPERATOR (chemical; pharmaceut.) alternate titles: drum-drier operator; vacuum-drum-drier operator

    Tends vacuum drum driers that heat liquid compounds to form caked or powdered chemical products: Connects tube from feed inlet to drum containing liquid to be dried. Turns steam and coolant valves and observes thermometer to regulate temperature of steam-jacketed drum enclosed in vacuum chamber, according to specifications. Starts pump and observes vacuum gauge to maintain prescribed vacuum in chamber. Starts revolving drum that dries liquid as it splashes against heated drum, forming caked or powdered product that is removed from surface of drum by scraper blade. Observes and feels dried product, periodically submits sample for laboratory moisture analysis, and adjusts drying temperature and vacuum if product does not meet plant standards. Records drying time of batch, gauge readings, and amount or weight of materials dried. May set scraper blade at specified distance from drum, using handtools. May fill containers with dried materials, weigh containers, and tag containers for shipment or storage.
GOE: 06.04.11 STRENGTH: M GED: R3 M2 L2 SVP: 3 DLU: 77

553.685-046 DRIER OPERATOR II (plastic-synth.)

    Tends equipment, such as centrifuge and rotary drier, that removes moisture and recovers plastic resin from slurry: Observes gauges, turns valves, and starts pumps to regulate flow of slurry from storage tank to centrifuge. Starts centrifuge to separate resin from slurry and observes flow of partially dried resins into rotary drier. Observes gauges and turns valves to regulate flow of hot air and maintain specified temperature in drier. May tend pneumatic conveyor that carries dried resin into storage silos. May measure level of stored materials in silo, using calibrated plumbline.
GOE: 06.04.13 STRENGTH: L GED: R2 M1 L1 SVP: 2 DLU: 77

553.685-050 DRIER OPERATOR III (chemical) alternate titles: calciner operator; rotary-drier operator

    Tends batch or continuous rotary driers that remove moisture from solid chemical materials: Dumps or shovels materials into batch drier chamber, or starts feed conveyors of continuous drier. Starts drying chamber rotating. Admits steam or hot air to drying chamber until specified heat is attained, as indicated by temperature chart recorders and gauges. Opens vacuum valves to withdraw accumulated vapors where materials require drying at subatmospheric pressure. Stops rotation of drying chamber to dump dried materials, or starts discharge conveyor to empty contents of chamber and transfer dried product to storage, packaging, or further processing. May tend auxiliary equipment, such as condensers and vacuum pumps. Records operating data in equipment log, such as temperatures, pressures, drying time, and hourly production. May feel discharged materials for specified dryness. May submit samples to control laboratory for moisture analysis. May regulate drier temperature, and speed of conveyors and rotary chamber, according to knowledge of process and material being dried.
GOE: 06.04.11 STRENGTH: M GED: R3 M2 L2 SVP: 5 DLU: 77

553.685-054 DRIER OPERATOR IV (chemical) alternate titles: spray drier

    Tends spray driers that evaporate water from slurries, forming caked or powdered product: Pumps slurry to atomizer nozzle in drier and regulates spray of slurry as instructed. Observes temperature recorders and adjusts valves, controls, and dampers to heat or cool and direct air through drier to evaporate water or solidify slurry. Observes discharge conveyor for malfunctions or jamming to maintain uninterrupted flow of dried materials to storage. Rakes out accumulated cake or powder remaining in drier, and clears clogged lines, using length of wire. May place empty drums under discharge end of spray tower to be filled with specified amount of powdered emulsifier. May tend auxiliary equipment, such as cyclone filters and scrubbing tower to refine product or recover usable materials.
GOE: 06.04.11 STRENGTH: M GED: R3 M2 L2 SVP: 4 DLU: 77

553.685-058 DRIER-OPERATOR HELPER (chemical) alternate titles: laborer, glue drying

    Assists DRIER OPERATOR (chemical) VI in drying glutinous material, such as gelatin and glue. Starts equipment and turns valves as directed. Moves glutinous material to drier, using handtruck. Performs other duties as described under HELPER (any industry) Master Title.
GOE: 06.04.19 STRENGTH: M GED: R1 M1 L1 SVP: 2 DLU: 77

553.685-062 FIRE-HOSE CURER (rubber goods)

    Tends steam-heating equipment that cures rubber in jacketed firehose: Lifts precut lengths of specified rubber tubing and braided fabric hose jacket onto table. Dusts rubber tubing with soapstone to prevent tubing from sticking to jacket. Turns crank to wind tubing onto stock wheel. Aligns jacket with mechanical threading device and clamps threading fixture to end of rubber tubing. Starts winch that pulls tubing into jacket. Lifts and clamps ends of jacketed hose to fixtures on steam lines. Presses hose into curing cavities on table that hold hose in flattened position when curing. Observes gauges and turns valve to inject steam into hose at specified temperature and pressure for curing. Places cured hose on storage rack.
GOE: 06.04.13 STRENGTH: H GED: R2 M1 L1 SVP: 2 DLU: 77

553.685-066 FIRER, RETORT (chemical)

    Tends burners supplying heat to retorts (reaction vessels) to facilitate heating of materials to produce chemical products: Moves controls to regulate flow of gas or oil to burners to maintain temperature of retorts at specified reading. Cleans and repairs retorts, using handtools, scrapers, brushes, and cleaning agents.
GOE: 06.04.11 STRENGTH: L GED: R2 M1 L1 SVP: 3 DLU: 77

553.685-070 KETTLE WORKER (soap & rel.)

    Tends kettles that boil soap ingredients: Opens valves to admit alkali, fat, tallow, lye, and steam into kettles: Observes temperature gauges and rate of boiling and turns valves to regulate temperatures. Draws samples and delivers them to laboratory. Adds soda and water, according to instructions, to bring mixture to specifications, using scoop and hose. Opens valves to drain off glycerine, water, and sludge. May stir soap solutions with wooden paddle to promote blending.
GOE: 06.02.18 STRENGTH: M GED: R3 M2 L2 SVP: 4 DLU: 77

553.685-074 LIME-SLUDGE KILN OPERATOR (paper & pulp)

    Tends gas- or oil-fired kiln that burns lime sludge to recover lime: Turns panel controls to adjust burner and flow of sludge into kiln according to temperature gauges. Starts conveyor that carries lime from kiln to hopper of slaking machine. May tend washers and filters that remove cooking liquor from sludge before it is burned.
GOE: 06.04.11 STRENGTH: L GED: R2 M1 L1 SVP: 2 DLU: 77

553.685-078 MILLED-RUBBER TENDER (rubber goods; rubber tire)

    Tends conveyor, and spraying and drying unit that cools and dries milled rubber stock: Monitors flow of rubber stock as it drops from mixer through batch-off mill onto conveyor. Removes stock adhering to mill rollers with long-handled scraper and frees stock if it piles up on conveyor. Adjusts conveyor speed and turns valves to regulate water spray and airflow that cools and dries stock.
GOE: 06.04.13 STRENGTH: M GED: R2 M1 L1 SVP: 2 DLU: 77

553.685-082 OVEN TENDER (paint & varnish) alternate titles: baker, paint; enamel burner; kiln tender

    Tends oven that bakes freshly painted furniture parts to harden finish: Starts equipment to heat oven to prescribed temperature. Pushes truckload of dipped or sprayed pieces into heated oven, hangs pieces on hooks suspended from overhead trolley, or places pieces on conveyor belt and regulates speed of belt through oven in accordance with temperature of oven and size of pieces. Allows pieces to bake for specified length of time and removes finished articles from oven.
GOE: 06.04.21 STRENGTH: M GED: R3 M1 L1 SVP: 3 DLU: 77

553.685-086 PIGMENT FURNACE TENDER (chemical)

    Tends kiln or furnace that makes pigments from specified chemical ingredients or develops specified colors in pigments or metallic powders for use in making paints, enamels, and varnishes: Weighs or measures specified chemical ingredients and dumps them into furnace hopper, conveyor, blending, pulverizing and sifting machine hoppers, or into clay saggers. Opens chute on hopper or conveyor, or shovels prepared charge into furnace. Positions specified temperature cam into automatic heat control unit, or turns dials to specified setting to regulate temperature, temperature changes, and heating and cooling cycles. Observes control panel of furnace to verify standard functioning of preset furnace. Opens discharge chute, or shovels pigment or powder from furnace. May clean and adjust burners on gas-fired furnaces. May verify color of pigments or powders to standard samples or color chart.
GOE: 06.04.11 STRENGTH: H GED: R3 M2 L2 SVP: 3 DLU: 77

553.685-090 RABBLE-FURNACE TENDER (chemical)

    Tends furnace and auxiliary equipment that heat carbon black to reduce sulfur content by starting feed and discharge conveyors, opening fuel and water valves, and lighting burners with rabble (torch on end of iron rod). May tend furnace that dries carbon into granules preparatory to bagging and be designated Granular Operator (chemical).
GOE: 06.04.19 STRENGTH: L GED: R3 M1 L1 SVP: 3 DLU: 77

553.685-094 ROTARY-FURNACE TENDER (chemical)

    Tends rotary furnace that roasts sulfur or other materials to liberate gases for use in processing chemical products: Weighs materials to be roasted and scoops or dumps specified quantity into furnace hopper. Starts revolution of furnace, consisting of hollow cylinder mounted between power-driven rollers. Observes thermometer and turns fuel or steam valves to maintain specified temperature in furnace and efficient roasting of materials. Shuts down furnace after roasting is completed and assists other workers in cleaning and preparing furnace for subsequent operation. May adjust and repair furnace, using handtools. When roasting sulfur for use in production of sulfuric acid, is designated Sulfur Burner (chemical).
GOE: 06.04.11 STRENGTH: H GED: R2 M1 L1 SVP: 3 DLU: 77

553.685-098 SOAP-DRIER OPERATOR (soap & rel.) alternate titles: drier-machine hand; flake drier; roll-machine attendant

    Tends equipment and machinery that converts viscous soap into flakes and removes excess moisture from flakes: Turns valves to admit refrigerated water into rollers to chill them to specified temperature to harden soap. Opens valve to allow viscous soap to flow from crutcher machine into chamber equipped with chilling rollers. Starts rollers to press soap into sheets. Adjusts flaking knives that cut sheets of soap into flakes. Turns valve to regulate flow of flakes into drier. Turns valves to admit steam to drying cylinders and oven jackets to heat drier to specified temperature. Removes sample of dried flakes and tests for moisture content, using moisture testing apparatus. Adjusts temperatures accordingly. Opens valve to discharge dried flakes onto conveyor belt leading to storage bins. May sharpen flaking knives, using hand file. May tend equipment to convert liquid insecticide into flakes and be designated Flaker Operator (chemical).
GOE: 06.04.19 STRENGTH: L GED: R2 M1 L1 SVP: 2 DLU: 77

553.685-102 TIRE MOLDER (rubber tire) alternate titles: curing finisher; retread-mold operator

    Tends retreading mold that vulcanizes camelback (raw rubber tread) onto tire casing and molds tread design: Places air bag of specified size inside tire, using tire-spreading device, and clamps tire into mold. Inflates air bag to specified pressure and heats mold to specified temperature to cook and mold tread. Removes tire after predetermined time and trims loose ends from molded tread, using knife.
GOE: 06.04.13 STRENGTH: H GED: R2 M1 L1 SVP: 3 DLU: 77

553.685-106 VACUUM-DRIER TENDER (chemical) alternate titles: shelf-drier operator

    Tends vacuum driers that heat chemical solids to remove water or other liquids: Observes temperature indicators and vacuum gauges and turns steam valves and sets dials to regulate temperature and vacuum pressure in drier as specified. Observes drying material in glass viewer of equipment for conformance with specifications. Collects samples of material for laboratory moisture test. Records gauge readings, type of material dried, weight, and drying time.
GOE: 06.04.11 STRENGTH: L GED: R3 M1 L1 SVP: 4 DLU: 77

553.685-110 WAX-POT TENDER (foundry) alternate titles: melter

    Tends melting pots in which wax is melted for use in lost wax casting process: Breaks slabs of wax and deposits them in melting pots. Adjusts thermostat to maintain specified temperature of liquid wax. Dips wax from melting pot, using hand ladle, and pours it into receiving pot. May fill cylinders of wax-injection machines with liquid wax and place cylinders in aging oven for specified period of time.
GOE: 06.04.32 STRENGTH: M GED: R2 M2 L1 SVP: 2 DLU: 77

553.685-114 CADMIUM BURNER (chemical)

    Tends furnace and auxiliary equipment that heat cadmium to produce cadmium oxide: Turns handwheel to tilt and lower mouth of crucible for initial loading, and dumps cadmium balls into crucible until scale indicator reaches specified weight. Returns crucible to upright position and turns control to activate automatic pilot that fires furnace. Positions empty drum under oxide collector discharge outlet, clamps discharge cover over drum, and turns switch that starts flow of cadmium oxide from collector into drum. Periodically scrapes molten accumulation from mouth of crucible, using metal rod. Dumps additional cadmium balls into crucible when indicator falls below prescribed weight, using pipe carrier. Turns switch to stop flow of cadmium oxide when drum is filled. Removes drum from under discharge cover, and closes drum with lid and sealing collar. Weighs drum, records weight on shipping tag, and attaches tag to sealing collar. Periodically scrapes and chips accumulations of cadmium oxide from floor and from crucibles not in use. Sifts scrapings, weighs, and stores solids. Maintains production logs.
GOE: 06.04.11 STRENGTH: H GED: R2 M1 L2 SVP: 2 DLU: 86

553.685-118 DRIER OPERATOR VI (chemical) alternate titles: glue-drier operator; pearl-glue drier

    Tends equipment that dries glutinous material, such as gelatin and glue, by either of following methods: (1) Starts pumps to admit glutinous material through coolers to congeal it and through extruders to form noodles. Starts conveyor that moves noodles through series of drying compartments and turns on heaters and fans in compartments. Feels noodles for moisture content and regulates speed of equipment to ensure prescribed degree of dryness. Reads hydrometer to detect excessive moisture in drying compartments and turns on dehumidifier when necessary. (2) Transfers containers of pearl glue (granular forms) or moves frames or trays of sheets of glue or gelatin into drying compartment, using handtruck. Starts heaters and fans in heating compartment. Feels glutinous material for moisture content and regulates temperature in drying compartment when necessary. May tend equipment that spreads glutinous material into sheets for drying [SPREADING-MACHINE OPERATOR (chemical) 559.685-170].
GOE: 06.04.19 STRENGTH: M GED: R3 M1 L1 SVP: 4 DLU: 77

553.686-010 BONE-CHAR OPERATOR (chemical)

    Unloads furnace in which ground bones are charred to produce boneblack (animal charcoal): Opens and closes slide gate on bone-char furnace to fill bucket, mounted on dolly, with boneblack. Tilts bucket, assisted by other workers, to discharge contents onto cooling floor. Spreads boneblack over floor to cool, using rake. Shovels cooled boneblack onto conveyor for transfer to storage tanks. May sprinkle water onto material to facilitate cooling. May shovel ground bones into furnace or retort and dump charred product onto storage conveyor, using wheelbarrow, and be designated Retort Feeder, Ground Bone (chemical).
GOE: 06.04.19 STRENGTH: M GED: R2 M1 L1 SVP: 2 DLU: 77

553.686-014 CD-MIXER HELPER (rubber reclaim.) alternate titles: pan-devulcanizer helper

    Performs following duties in devulcanizing ground scrap rubber in steam heater: Places pans beside mixer and loads pans with scrap rubber compound. Loads pans onto heater car by hand or hoist and pushes car into heater. Pulls heater cars out of heaters, using electric winch, and dumps or shovels devulcanized rubber into storage bins.
GOE: 06.04.11 STRENGTH: H GED: R1 M1 L1 SVP: 2 DLU: 77

553.686-018 CURING-PRESS OPERATOR (rubber tire)

    Feeds and off bears machines that cure (vulcanize) tires, performing any of following duties: Removes foreign matter from molds, using airhose, and sprays molds with dope solution to prevent tire from sticking. Lifts tires from saddle trucks to position them in molds. Pushes switch to inflate air bag to expand tire into closing mold. Lifts cured tires from mold at end of cycle and places tires on inflating unit to preserve tire shape during cooling period. Lifts tires from inflating unit at end of cooling cycle and loads them onto overhead conveyor.
GOE: 06.04.13 STRENGTH: H GED: R1 M1 L1 SVP: 2 DLU: 77

553.686-022 DECKHAND (chemical)

    Dumps oleoresin into hopper of vats that melt resin preparatory to distillation into turpentine and rosin: Rolls filled barrels of oleoresin onto scales to be weighed and rolls weighed barrels to storage area above vats. Upends barrels to dump resin into hopper of melting vats and pushes resin near steam jets of vats with stick to facilitate melting.
GOE: 06.04.11 STRENGTH: H GED: R1 M1 L1 SVP: 2 DLU: 77

553.686-026 DRIER OPERATOR V (chemical)

    Feeds wet smokeless powder into equipment that dries powder and removes process solvents, such as acetone, ether, and alcohol: Observes gauges to ascertain that temperature of water is within specified limits. Removes filled containers of dried powder from equipment, using handtruck.
GOE: 06.04.11 STRENGTH: H GED: R2 M1 L1 SVP: 2 DLU: 77

553.686-030 DRIER-OPERATOR HELPER (rubber reclaim.) alternate titles: dry-room helper

    Performs following duties to remove moisture from devulcanized scrap rubber: Cleans adhering scrap stock from drier and shaker screens, using handtools and airhose. Dumps bags of soapstone into hopper of mechanical shaker that sifts soapstone to prevent tacky surfaces of stock from adhering to shaker. Opens and closes discharge chutes of drier as instructed. May move dried stock to storage bins on handtrucks.
GOE: 06.04.13 STRENGTH: M GED: R1 M1 L1 SVP: 2 DLU: 77

553.686-034 FRAME FEEDER (chemical)

    Positions gelatin-drying frames on conveyor below gelatin-spreading machine to receive sheets of congealed gelatin discharged by machine. Slides loaded frame to elevator which stacks frames on truck. Pushes loaded truck to drying alley.
GOE: 06.04.34 STRENGTH: M GED: R1 M1 L1 SVP: 2 DLU: 77

553.686-038 ROTARY-DRIER FEEDER (chemical) alternate titles: calciner feeder

    Feeds crystalline or granular materials to conveyor system or feed hopper of rotary driers for drying: Starts feed conveyor and shovels material onto moving belt, or adjusts controls of conveyor or feed hopper to regulate automatic feed according to instructions from equipment operator. May be designated according to materials fed as Soda-Drier Feeder (chemical); Sulfur Feeder (chemical).
GOE: 06.04.11 STRENGTH: M GED: R2 M1 L1 SVP: 2 DLU: 77

553.686-042 VARNISH-MAKER HELPER (paint & varnish)

    Assists VARNISH MAKER (paint & varnish) in manufacturing varnish, performing any combination of following duties: Transfers ingredients, such as gums, resin, turpentine, and oils from storage to work area, using handtruck. Weighs specified amounts of dry materials and shovels or dumps them into kettles or vessels. Measures liquids in receptacle and pours them into kettles or supply tanks. Mixes ingredients in kettles with paddle. Cleans kettles and other equipment, using high-pressure hose, solvents, and brushes. Performs other duties as described under HELPER (any industry) Master Title.
GOE: 06.04.11 STRENGTH: H GED: R2 M1 L1 SVP: 2 DLU: 77

553.687-010 DRIER HELPER (chemical)

    Performs variety of manual duties in drying and storing chemical materials, as directed: Turns valves to fill sample bottles for laboratory testing. Inspects product through sight glasses at various stages of drying process to detect malfunctions. Inspects equipment and piping for leaks or malfunctions. Notifies equipment operator or supervisor of unusual conditions. Lowers gauge tape into storage towers to facilitate inventory and production control. Records gauge readings on operating record. Cleans equipment, using hose and water. May be designated according to type of drier as Spray-Drier-Operator Helper (chemical).
GOE: 06.04.11 STRENGTH: L GED: R2 M1 L1 SVP: 2 DLU: 77

553.687-014 FURNACE HELPER (chemical)

    Observes flow of sawdust on conveyors leading to carbon-producing furnace and adjusts feed gates as necessary to maintain uniform flow. Positions sample cans under carbon-discharge spouts of furnace tubes and opens spouts to fill bottles for laboratory analysis, timing sampling with interval timer. Weighs and labels containers. Clears jams in feed and discharge conveyors, using rod.
GOE: 06.04.34 STRENGTH: L GED: R2 M1 L1 SVP: 2 DLU: 77

554 COATING, CALENDERING, LAMINATING, AND FINISHING OCCUPATIONS

    This group includes occupations concerned with imparting a desired finish or ensuring uniform thickness in materials by pressure applied with rollers; forming or pressing materials into thin sheets or layers and then adding them to other materials; covering materials and objects with a layer of another material for such purposes as preserving or decorating them; adding a desired surface effect to materials and objects; and removing blemishes from them.

554.137-010 FINISHING SUPERVISOR, PLASTIC SHEETS (plastic-synth.)

    Supervises and coordinates activities of workers engaged in polishing surfaces of plastic sheets to remove scratches, masking sheets preparatory to shipment, and weighing and tagging sheets. Performs other duties as described under SUPERVISOR (any industry) Master Title.
GOE: 06.04.01 STRENGTH: L GED: R3 M2 L2 SVP: 6 DLU: 77

554.137-014 SUPERVISOR, COATING (plastic-synth.)

    Supervises and coordinates activities of workers engaged in operating equipment to coat cellophane with solvents, resins, plasticizers, or wax to moistureproof cellophane. Directs workers in maintenance and cleaning of coating towers, bath mixers, driers, and solvent recovery equipment. Performs other duties as described under SUPERVISOR (any industry) Master Title.
GOE: 06.02.01 STRENGTH: L GED: R4 M3 L3 SVP: 7 DLU: 77

554.362-010 CALENDER OPERATOR (rubber goods; rubber tire) alternate titles: spreader machine tender

    Operates machine, alone or as member of crew, to coat, impregnate, imprint, or form rubber sheeting or rubberized fabric: Turns steam valves to regulate heat or rolls, judging heat by action of rubber and by feeling rolls with hand. Turns handwheels or capstan bar to adjust distance between rolls. Verifies thickness of calendered material, using gauges. Threads fabric or rubber sheeting around and between rollers, through coating reservoirs or water coolant tanks, and onto pickup reel core or takeoff conveyor. Adjusts knives that trim selvage or cut material to specified width by moving knives along bar and turning setscrews, or replaces numbered rack (set) of knives, using wrenches. Adjusts weights on arms of holders so knives will press against rolls and cut through thickness of material processed. Observes calendered material for defects, such as bubbles, lumps, streaks, and pitting, and marks defects. May direct other workers who feed stock, change takeup reels, take off and inspect stamped parts, and place them in books, boards, and frames. May be designated according to material calendered as Calender Operator, Fabric (rubber goods; rubber tire); Calender Operator, Gum Stock (rubber goods; rubber tire).
GOE: 06.02.13 STRENGTH: M GED: R3 M2 L2 SVP: 4 DLU: 77

554.382-010 COATER (pharmaceut.) alternate titles: pill coater; tablet coater

    Controls battery of coating machines that apply coatings to pharmaceutical tablets to flavor, color, preserve, add medication, or control disintegration time: Dumps uncoated tablets into rotary pans of machines and starts machine. Pours measured amounts of liquid coatings, such as medicated syrup, dye, and gelatin, onto tablets to form base or successive coats according to formula or production order. When applying enteric coating to control disintegration, pours enteric solution over tablets prior to subcoating. Sprinkles dusting powder onto tablets and stirs them to prevent tablets from sticking together and to produce uniform coating. Examines tablets for defects, such as chips and discoloration, and scrapes coating with fingernail to ascertain dryness. Measures sample tablets, using caliper or micrometer, and weighs them on balance scale to determine adherence to weight and coating-thickness specifications. Dumps coated tablets and measured amount of liquid wax into canvas-lined pan and starts pan revolving to give tablets final glossy coating.
GOE: 06.02.21 STRENGTH: M GED: R3 M2 L2 SVP: 5 DLU: 77

554.382-014 PLASTICS-SPREADING-MACHINE OPERATOR (plastic-synth.)

    Operates machinery to spread synthetic resins and glass fibers over continuous sheet of plastics film to prepare materials for subsequent molding: Moves controls to set and regulate width of sheet and to adjust line speeds with flow rate of materials. Moves plungers to start flow of synthetic resin solution through metering device (material buckets). Observes gauges and starts pumps and degassing system on supply tanks to regulate pressure. Inserts thermometer in synthetic resin to verify temperature. Observes tachometers, flowmeters, and gauges to verify specified process conditions.
GOE: 06.02.13 STRENGTH: L GED: R3 M2 L2 SVP: 4 DLU: 77

554.384-010 DYER (chemical)

    Mixes coloring solution in tank or kettle, and dyes pearl and plastic buttons to match color of standard button or fabric sample: Weighs powdered dyestuffs according to formula. Pours powder into mixing bowl or pan, adds hot water, and stirs with spoon to form paste. Turns water and steam valves to fill dye kettle to indicated level, and stirs in paste, using paddle or spoon. Immerses wire basket containing buttons in solution. Withdraws sample buttons from solution, and compares with standard button or fabric sample to determine if color matches. Lifts basket from solution when color match is attained, immerses basket in boiling water to rinse excess dye from buttons, and places basket in barrel of centrifugal drying machine. Moves switch to start dryer that spins excess dye from buttons.
GOE: 06.02.32 STRENGTH: L GED: R3 M2 L2 SVP: 3 DLU: 77

554.485-010 BUCKLE-STRAP-DRUM OPERATOR (rubber goods)

    Tends machine that coats uncured rubber or rubber-coated fabric strips and winds them on drum to make straps for rubber footwear: Computes number and kind of books required, and keeps production chart. Places strip at back of drum, threads end through guides and cement-filled reservoir, and inserts end in groove of drum to secure it. Turns handwheel to regulate machine speed and starts machine that winds strip onto drum so that each turn abuts and adheres to edge of one previously wound. Stops machine when drum is filled and pulls knife along drum groove and across wound strip to form sheet of strips. Pulls sheet from drum onto cutting table, using stick, and cuts sheets into strips of specified length with knife, using triangular cutting bar as guide. Lifts rows of cut strips with stick and places them in book.
GOE: 06.04.13 STRENGTH: L GED: R2 M1 L1 SVP: 2 DLU: 77

554.485-014 STRAP-FOLDING-MACHINE OPERATOR (rubber goods)

    Tends machines that automatically fold uncured rubber strip or coated friction tape over parallel reinforcing cords to form strap material to which buckles, eyelets, or snaps are attached for use on rubber footwear: Calculates from work orders width, length, and quantity of stock to be made and prepares production schedule. Selects cord, strip or tape, and folding attachment according to work ticket. Mounts spools of cord on spindles and roll of strip or tape on arbor. Attaches folder to machine bracket by turning thumbscrews or using screwdriver. Cuts end of tape on bias, using scissors, and threads tip and cord through folder. Threads folded strap through paired rollers that press down folded edges. Positions carton at discharge end, starts machine, and runs strap material into carton. May fold and wind strip into rolls for cutting into straps by STRAP-CUTTING-MACHINE OPERATOR (rubber goods), using pedal-operated machine.
GOE: 06.04.07 STRENGTH: L GED: R3 M2 L2 SVP: 2 DLU: 77

554.585-010 CATHODE MAKER (chemical)

    Tends tanks and related equipment that coats cathode screens with asbestos for use in electrolytic cells: Opens valve to fill cathode tank with caustic liquor. Weighs out prescribed quantity of asbestos and dumps it into tank. Starts air compressor and opens valve to force asbestos and cell liquor to mixing tank and return it to cathode tank after agitation for specified time. Draws sample of resulting slurry and determines specific gravity, using hydrometer. Positions cathode screen over cathode tank, using crane. Connects vacuum hose to cathode and lowers cathode into tank for asbestos coating, using hoist. Observes vacuum gauge to determine number of dips or immersion time necessary to apply asbestos coating of specified thickness to cathode. Applies asbestos tape to secure cathode rim. Transfers coated cathode to drying area, using crane. Records number of cathodes coated, immersion and drying time, and quantity of materials used. May tin cathode bars, using tinning compound. May cut asbestos paper to size and cover screens and plates with new linings.
GOE: 06.04.21 STRENGTH: H GED: R3 M2 L2 SVP: 4 DLU: 77

554.585-014 COATER OPERATOR (plastic-synth.) alternate titles: dipping-machine operator; impregnating-machine operator

    Tends machine that coats continuous sheet of plastic material with synthetic resin solutions to impart special properties, such as heat resistance, impact strength, or waterproofing: Loads roll of material onto unwind stand, using overhead hoist. Threads material through rollers of coating machine, drier unit, and onto winding machine. Sets controls to regulate speed of material feed and amount of coating solution. Sets tension on material by adjusting speed of unwind and windup rolls. Turns valves to regulate steam or turns on infrared lamps to control drier temperature and moisture. Examines material passing through drier and onto windup machine for wrinkles or breaks. Patches breaks, using glue. Maintains log of machine running time and number of rolls processed.
GOE: 06.04.21 STRENGTH: M GED: R3 M1 L2 SVP: 3 DLU: 77

554.586-010 FINISHER (plastic-synth.)

    Performs any combination of following duties involved in final processing of plastics sheets: Removes plastics sheets from overhead monorail conveyor, weighs them, and replaces them on conveyor. Moves sheets to various locations, using handtruck. Cuts masking paper to size. Mixes adhesive and transfers it to reservoir of masking machine. Copies identification data, such as size, thickness, and weight on sheets or labels.
GOE: 06.04.40 STRENGTH: M GED: R2 M1 L1 SVP: 2 DLU: 77

554.587-010 ROLL INSPECTOR (plastic-synth.) alternate titles: slit-roll inspector

    Examines finished rolls of cellophane for defects and verifies accuracy of roll labels: Observes and feels rolls passing on conveyor to detect flaws, such as wrinkles, streaks, or tears on edges. Measures width and diameter of rolls, using tape rule. Compares identification labels with specifications to prevent errors. Pushes rejected rolls onto table. Records number of rolls processed and number of rolls rejected.
GOE: 06.03.02 STRENGTH: L GED: R2 M2 L2 SVP: 3 DLU: 77

554.662-010 CALENDER OPERATOR, FOUR-ROLL (plastic prod.; rubber goods; rubber tire)

    Operates four-roll calender to coat fabric with rubber or produce plastic sheeting and roll sheets to specified thickness: Adjusts automatic control and observes temperature dial to heat calender rolls to specified temperature. Starts machine and adjusts conveyor speed to regulate feeding of stock. Turns adjustment wheels of rollers to specified settings to stretch fabric for calendering. Verifies thickness and width of calendered stock with gauge and ruler. Positions knife to trim edge of calendered fabric. Interprets work orders, assigns duties, and informs crew of processing specifications. May operate equipment from control board.
GOE: 06.02.13 STRENGTH: L GED: R3 M2 L2 SVP: 5 DLU: 77

554.665-010 CALENDER-WIND-UP TENDER (rubber goods; rubber tire) alternate titles: calender helper; roll changer

    Tends $T3windup rack$T1 on $T3four-roll calender$T1 that winds calendered fabric onto liner rolls: Starts $T3festoons$T1 that accumulate fabric during roll change, and stops windup rack. Cuts fabric with scissors between machine and full roll and guides fabric into roll on auxiliary rack with aid of CALENDER-WIND-UP HELPER (rubber goods; rubber tire). Stops festoons, starts windup rack, and moves tension and speed levers to wind new roll. Places full roll onto scale, using hoist. Reads yardage gauge and compares roll weight with standard on yardage chart for conformance to specifications. Notifies CALENDER OPERATOR, FOUR-ROLL (plastic prod.; rubber goods; rubber tire) of weight discrepancies or fabric defects, such as wrinkles and spread cords. May run identification strings into calendered stock as windup proceeds.
GOE: 06.04.07 STRENGTH: M GED: R2 M1 L1 SVP: 2 DLU: 77

554.665-014 LAMINATING-MACHINE TENDER (rubber goods) alternate titles: doubling-machine operator

    Tends machine that combines two continuous sheets of material, such as rubber, sponge rubber, fabric, felt, or fleece, working as team member: Transfers rolls of material to and from machine, using handtruck, and lifts or hoists rolls into cradles, using chain hoist. Threads ends of cemented and noncemented materials over feed rollers, between combining rollers, and onto single $T3takeup roll.$T1 Turns wheels or capstan bolts to set pressure of combining rolls by trial and error to produce complete adhesion of both materials. Starts machine and moves lever to engage clutch and start material winding. Leans against one rotating roll of material to control tension and pulls or feeds edge to align it with other roll, while other worker controls tension and aligns material on opposite end of roll. Stops winding when either feeder roll is empty and cuts off other roll of material to match length, using scissors. Tapes ends of unused material, reads yardage indicator, and marks amount left on roll.
GOE: 06.04.09 STRENGTH: M GED: R2 M1 L2 SVP: 2 DLU: 77

554.682-010 CALENDER-LET-OFF OPERATOR (rubber goods; rubber tire)

    Operates letoff, dipping, and drying units of $T3four-roll calender$T1 to bond rubber to fabric: Positions fabric roll in letoff rack, using hoist, and starts $T3festoon.$T1 Splices undipped roll to end of roll in process by inserting gum strip between ends and aligning splice in vulcanizer to cure splice. Adjusts guides and pretension rolls to maintain specified width of fabric during dip process. Moves controls on central switch panel to adjust drier temperature, solution level in dip tank, and festoon speed. Notifies CALENDER OPERATOR, FOUR-ROLL (plastic prod.; rubber goods; rubber tire) of material defects or machine malfunction. May mix ingredients in agitator drum according to written specifications to make dip solutions. When operating dip unit independently of calender, tends windup rack [CALENDER-WIND-UP TENDER (rubber goods; rubber tire)] and is designated Dip-Unit Operator (rubber goods; rubber tire).
GOE: 06.02.13 STRENGTH: M GED: R3 M2 L1 SVP: 4 DLU: 77

554.682-014 MASKING-MACHINE OPERATOR (plastic-synth.)

    Operates machine to apply cement to masking paper and press coated paper onto surfaces of plastics sheets to provide protection during final processing and shipping: Positions paper roll on mandrel, using chain hoist. Threads paper through machine. Turns valves to fill hoppers with cement from reservoir. Moves levers to set paper cutters and to adjust pressure on squeeze rolls to accommodate size and thickness of plastics sheet. Turns screws to set blades that control amount of cement applied to paper and verifies position of blades, using feeler gauge. Adjusts tension and speed controls to eliminate wrinkling and excessive coating. Maintains production records.
GOE: 06.04.38 STRENGTH: M GED: R3 M2 L2 SVP: 4 DLU: 77

554.682-018 ROLL OPERATOR (plastic-synth.) alternate titles: calender-roll operator; mill-roll operator

    Operates roll mill to homogenize and roll plastic compounds into sheeting or slab form: Pushes button to transfer plastic from mixing machine to revolving heated mill rolls. Cuts material with knife and feeds material back through rolls to obtain sheet of specified color, consistency, and thickness. Adjusts slitting knives or starts automatic scraper to strip sheet from rolls. Guides material onto conveyor belt. Observes gauges or feels material and turns steam and water valves to control temperature of rolls. Cleans rolls to prevent contamination of stocks, using wire brush, hand scraper, solvents, and airhose. May adjust roll clearance with hand wrenches.
GOE: 06.02.13 STRENGTH: M GED: R3 M1 L1 SVP: 5 DLU: 77

554.682-022 ROOFING-MACHINE OPERATOR (build. mat., nec)

    Operates machine to coat continuous rolls of roofing felt with asphalt, colored slate granules, powdered mica, or tar, to make roll roofing or shingles: Threads felt through or around series of coating rollers. Pulls felt through rollers and adjusts tension. Sets machine controls to gradually increase speed of rollers to specified operating speeds, or pulls levers and turns valves and wheels to synchronize machine speed and flow of coating material. Observes gauge and adjusts rheostat to regulate temperature of coating material in reservoir. Examines felt as it emerges from rollers to ensure that coating material is applied according to specifications. May feel moving felt to determine whether granules are being deposited uniformly and are adhering as specified. May be designated according to type of coating applied as Coater, Asphalt (nonmet. min.); Coater, Slate (nonmet. min.).
GOE: 06.02.18 STRENGTH: L GED: R3 M1 L2 SVP: 4 DLU: 77

554.684-010 CAUSTIC OPERATOR (plastic-synth.)

    Immerses plastics sheets into tank containing heated caustic solution to impart finish to sheet surface: Places sheets into tank. Tests water temperature and solution concentration, using thermometer and hydrometer. Turns steam valve to regulate temperature and adds water or caustic solution to maintain specified concentration of solution. Removes sheets from tank after specified time and places them in rinse tub or under water spray. Stacks rinsed sheets on absorbent cardboard preparatory to drying and inspection.
GOE: 06.04.13 STRENGTH: M GED: R2 M1 L1 SVP: 3 DLU: 77

554.684-014 FOAM DISPENSER (rubber goods)

    Sprays padding solution (liquid rubber foam) in formed skins (shaped plastic sheets) with hose to produce automotive padded products, such as dashboards and door panels: Positions cardboard inserts at defroster locations and ignition cluster to prevent buckling during cure. Positions metal reinforcement panels at clusters and edges of product to be cured into skin. Dispenses solution in specified areas of skin and pours solution from cardboard containers around clusters and metal panels to prevent overflow.
GOE: 06.04.32 STRENGTH: M GED: R2 M1 L1 SVP: 3 DLU: 77

554.685-010 BULK-SEALER OPERATOR (plastic-synth.)

    Tends automatic, radiant-heat bulk sealer that bonds plastic sheets for fabricating bags: Places lifts (two sheets of plastic film separated by single sheet of paper) alternated with asbestos pads on piston of sealer. Straightens disarranged sheets, using wooden paddle. Starts sealer in which plastic film is bonded as piston slowly rises through heated chamber. Inspects samples of bonded sheets to detect machine malfunction.
GOE: 06.04.02 STRENGTH: L GED: R2 M1 L1 SVP: 2 DLU: 77

554.685-014 COATING-AND-BAKING OPERATOR (any industry)

    Tends equipment that automatically applies and bakes enamel or other coating onto fabricated steel products: Fills machine reservoir with coating solution, such as lacquer, enamel, or varnish. Starts conveyor or feed rolls that carry products to be coated and baked, through equipment. Sets heating unit at specified temperature and starts pumps and exhaust fans. Feeds products onto conveyor or between feed rolls that apply coating. Examines products emerging from baking unit for conformance to coating thickness and appearance specifications. May mix coating to prescribed viscosity, using viscometer. May gauge thickness of coating to determine adherence to quality control specifications, using dial indicator. May be designated according to equipment or process employed as Flash-Oven Operator (elec. equip.); Operator, Coating Furnace (cutlery-hrdwr.); or according to product coated as Coating-Machine Operator, Metal Tags And Signs (fabrication, nec).
GOE: 06.04.21 STRENGTH: L GED: R3 M1 L2 SVP: 3 DLU: 77

554.685-018 COMBINING-MACHINE OPERATOR (plastic-synth.)

    Tends combining-roll machine that presses and impregnates synthetic resins and glass fibers between continuous sheets of plastics film to form homogenous sheeting of specified thickness preparatory to molding operations: Turns crank to adjust opening between rolls to form sheeting of specified thickness. Verifies width of opening with feeler gauge. Threads plastics film through rolls. Presses switch to start machine and observes flow of materials through machine to detect foreign particles and machine malfunctions. Moves lever to adjust tension on sheeting and to synchronize speed of sheeting with speed of belt.
GOE: 06.04.20 STRENGTH: L GED: R3 M1 L1 SVP: 4 DLU: 77

554.685-022 LINER REROLL TENDER (rubber goods; rubber tire) alternate titles: reroll tender; wrapper rewinder

    Tends machine that cleans, smooths, repairs, and rerolls fabric liners for reuse in winding uncured rubber and fabric materials, calendered rubber or rubberized fabric: Positions liner roll in letoff bracket manually or by use of hoist. Starts machine and guides liner through rollers to ensure evenness of liner and removal of wrinkles. Examines liner for adhering rubber particles and torn areas. Scrapes rubber particles from liner with handtool. Sews additional fabric onto liners or repairs defective areas, using sewing machine. May verify weight and length of roll, using scale and yardage gauge.
GOE: 06.04.07 STRENGTH: H GED: R2 M1 L1 SVP: 2 DLU: 77

554.685-026 SIZING-MACHINE OPERATOR (nonmet. min.)

    Tends machine that coats cloth, fiber, or paper with glue or other adhesive to prepare material for coating of abrasive: Starts machine and feeds precut blanks into machine, or mounts roll of base material on machine spindles for automatic feed through machine. Pours liquid adhesive into container on machine.
GOE: 06.04.21 STRENGTH: L GED: R2 M1 L1 SVP: 3 DLU: 77

554.685-030 LAMINATOR (wood prod., nec)

    Tends laminating machine that bonds decorative material, such as plastic or paper, to face of hardboard panels: Conveys rolls of materials specified in work order from storage area to laminating machine, using forklift truck. Positions roll on machine carriage, using chain hoist. Pulls end of material from roll onto takeup rollers of machine and turns handwheel that moves carriage to align material with panels. Turns dials and moves levers to set machine roller speed, roller pressure, and heating unit temperature, following processing specifications. Turns valve to replenish glue supply. Depresses buttons to start machine. Inspects and measures first panels discharged from machine to verify correct alignment of bonded material on panel, using tape measure. Adjusts controls to correct machine operations such as speed of machine units. Severs material between laminated panels, using cutter, to free panels discharging onto off bearing conveyor. Refills glue reservoir as required. Performs routine maintenance.
GOE: 06.04.34 STRENGTH: L GED: R3 M1 L2 SVP: 3 DLU: 86

554.685-034 PHOTORESIST LAMINATOR, PRINTED CIRCUIT BOARD (electron. comp.) alternate titles: hot roll laminator; laminating machine tender

    Tends machine that laminates dry photoresist film to surfaces of panels used in manufacturing printed circuit boards (PCB's): Mounts rolls of photoresist film and plastic protective film on machine spindles. Threads film through machine rollers and secures film to takeup spindles. Presses button to activate machine. Adjusts controls to regulate speed, temperature, and pressure of laminating rollers. Moves levers and adjusts controls to align panels with edge of film. Feeds panels into roller, or positions panels on conveyor that feeds panels into laminating machine. Observes lamination process, monitors speed and temperature gauges, and adjusts controls to ensure compliance with standards. Removes laminated panels from machine. Cuts excess photoresist and protective plastic film from panel edges, using knife. May tend machine that scrubs, cleans, and dries PCB panels prior to laminating process [SCRUBBER MACHINE TENDER (electron. comp.) 599.685-134]. May examine laminated panels for defects.
GOE: 06.04.09 STRENGTH: M GED: R2 M1 L2 SVP: 2 DLU: 89

554.686-010 CALENDER FEEDER (rubber goods)

    Feeds milled rubber stock into rolls of calendering machine to maintain continuous supply: Lifts pig (roll) of rubber stock from warmup mill conveyor and pushes it between horizontal rotating rolls until stock is drawn between and rolled around calender rolls. Turns wheels or capstan bolts to adjust distance between rolls to produce sheeting of specified thickness. May mount roll of backing material, such as sponge rubber, insole mixture, or cloth fabric, in cradle and thread it through rolls for coating with rubber.
GOE: 06.04.13 STRENGTH: H GED: R1 M1 L1 SVP: 2 DLU: 77

554.686-014 CALENDER-LET-OFF HELPER (rubber goods; rubber tire)

    Positions fabric rolls and string spools on $T3letoff rack$T1 and removes empty roll shells from calender machine. Inserts ends of fabric into hot press to splice them. Conveys fabric rolls to and from storage, calender, and production areas, using electric crane hoist or forklift. Cleans dip tank.
GOE: 06.04.40 STRENGTH: H GED: R2 M1 L1 SVP: 2 DLU: 77

554.686-018 CALENDER-OPERATOR HELPER (rubber goods; rubber tire) alternate titles: liner-roll changer; rubber-calender helper; wind-up operator

    Performs any of following duties at calendering machine to facilitate coating, imprinting, or forming rubber sheeting or rubberized fabric: Changes fabric rolls and roll shells, using overhead hoist, on $T3letoff racks$T1 and $T3windup racks.$T1 Threads material through machine. Observes operation to detect faulty calendering. Sets yardage counter. Turns handwheels, moves lever, or presses buttons on control panel to adjust sheeting tension and windup speed. Prepares and attaches identification tag to calendered roll. May splice uncoated roll to end of roll in process inserting gum strip between ends and vulcanizing in bar splice press. May read yardage gauge and compare weight for conformance to specifications. May relieve CALENDER OPERATOR (rubber goods; rubber tire). Performs other duties as described under HELPER (any industry) Master Title.
GOE: 06.04.13 STRENGTH: H GED: R2 M1 L1 SVP: 2 DLU: 77

554.686-022 CALENDER-WIND-UP HELPER (rubber goods; rubber tire)

    Positions liner rolls on windup rack and lowers full calender rolls to floor, using hoist. Cuts roll and starts fabric into liner rolls. Trims ragged fabric edges, using scissors. Examines fabric for wrinkles or other defects and tags finished rolls to show weight, yardage, and stock type.
GOE: 06.04.29 STRENGTH: M GED: R1 M1 L1 SVP: 2 DLU: 77

554.687-010 SPREADER (plastic-synth.) alternate titles: impregnator

    Impregnates fiberglass matting and other fabric materials with resin compounds for use in laminating plastic products: Places cellophane or wax paper on worktable and spreads resin compounds over sheet evenly with hand spreader. Places precut fabric matting on resin and rolls it with wire-mesh-covered roller to saturate matting. May weigh specified quantities of plastics ingredients on scale and dump them into containers for use in molding plastic products. May pour premixed resins into saturating tank and thread fabric through rollers of impregnating machine to prepare material for laminating. May cut specified patterns from impregnated fabric, using template, hand shears, and knife.
GOE: 06.04.27 STRENGTH: M GED: R2 M1 L1 SVP: 2 DLU: 77

555 GRINDING AND CRUSHING OCCUPATIONS

    This group includes occupations concerned with reducing materials to smaller particles, such as granules, grits, powder, or paste, by means of compression, smashing, cutting, or a combination of these.

555.382-010 PULVERIZER-MILL OPERATOR (rubber goods; rubber reclaim.)

    Operates machine to prechop and pulverize vulcanized scrap rubber for reuse: Transfers material between storage and work areas on pallet, using forklift truck. Starts prechopper, pulverizer, and connecting conveyor. Places box on scale under discharge hopper of pulverizer to load ground material to specified weight. Loads scrap into prechop hopper, selecting it according to specified type, compound, and color. Examines scrap while loading and removes foreign matter, such as metal, cloth, and plastic. Observes thermometers and dials for room and exhaust temperatures and amperage used. Adjusts speed of conveyor feed to pulverizer to avoid overloading and prevent overheating and burning material. Observes temperature indicators on control panel of water cooling system and air vents, turns valve to adjust water flow, and opens ports to increase airflow to cool machine jacket or grinding stock. Examines ground rubber for size and adjusts gap of discharge opening to prevent rubber from passing until ground to desired fineness. Observes magnetic grid at mouth of pulverizer that screens pellets to remove any metal missed on visual inspection. Removes screen and wipes off accumulated metal, using cloth. Folds and tapes filled box top, and marks weight and compound number on box. Posts amount and type of ground rubber processed to production record.
GOE: 06.02.13 STRENGTH: M GED: R3 M2 L2 SVP: 4 DLU: 77

555.565-010 MILL ATTENDANT I (chemical)

    Tends system of grinders, crushers, conveyors, vibrating screens, and elevators in salt mill that crush and screen rock salt extracted from mine: Moves switches, levers, and other controls on instrument panels to start and stop equipment. Reads gauges to verify specified operation of equipment. Starts and stops various conveyors to control direction of flow, to store salt of specified size in designated storage bins. Observes and listens to operation of equipment and reports malfunctions to supervisor.
GOE: 05.12.07 STRENGTH: M GED: R3 M1 L1 SVP: 3 DLU: 77

555.585-010 CUTTER OPERATOR (plastic-synth.)

    Tends machine that shreds woodpulp to specified size for use as filler in producing plastics materials: Inserts mandrel through core of woodpulp roll and mounts roll on unreeling stand, using overhead hoist. Threads sheet into machine feed rolls and adjusts cutting blade, using handtools. Starts machine and observes discharge of shredded pulp into conveyor system or automatic weigh bin to ascertain conformity to specifications. Cleans dust from equipment, using airhose or brush. Records weight and number of rolls cut. May adjust braking device to prevent bulking or tearing of sheet.
GOE: 06.04.03 STRENGTH: M GED: R3 M1 L1 SVP: 3 DLU: 77

555.665-010 SHREDDER TENDER (chemical)

    Tends machine that chops and shreds animal stock (skins, splits, fleshings, and trimmings) used in making glue. Lifts stock from table, places stock on conveyor leading into machine and starts machine. Greases and oils machine. May signal other workers to load stock onto conveyor.
GOE: 06.04.19 STRENGTH: L GED: R2 M1 L1 SVP: 2 DLU: 77

555.682-010 MILLER II (chemical)

    Operates mixing, screening, and milling machines to process salt: Installs specified size screens and rollers in milling machine, using handtools to obtain salt crystals of designated sizes. Opens chute to admit salt into milling machine and starts machine. Brushes oversized salt from vibrating screen to prevent clogging. May be designated according to salt product being milled as Miller, Kiln-Dried Salt (chemical).
GOE: 06.02.11 STRENGTH: H GED: R3 M1 L1 SVP: 7 DLU: 77

555.682-014 ROLLER-MILL OPERATOR (paint & varnish) alternate titles: paint grinder, roller mill

    Operates mill equipped with rollers to grind paste of premixed ingredients, such as pigments, resins, solvents, oils, and plasticizers, for use in paint, lacquer, and ink: Moves controls to set specified roll spacing and pressure. Starts flow of water through roll cooling system to prevent ignition or discoloration of paste. Adjusts feed gate to regulate flow of paste from hopper onto feeder roll. Secures scraper blade to takeoff roll and bolts chute to scraper blade, allowing paste to flow from roll into thinning and storage tanks or scrapes paste from mill apron into container, using spatula. Tests paste sample for fineness, using grind gauge, or sends sample to laboratory for analysis. Adjusts roll pressure controls to regulate flow of paste during grinding. Cleans equipment, using scrapers and solvents. May pump specified types and quantities of thinners into thinning tank. May blend specified extenders (chemicals that increase bulk of paint) with paste, using portable mixer.
GOE: 06.02.11 STRENGTH: M GED: R3 M2 L2 SVP: 5 DLU: 77

555.682-018 SAND-MILL GRINDER (paint & varnish)

    Operates sand mill that grinds premixed paint ingredients to disperse solid ingredients in vehicle: Starts mixer to combine ingredients settled in portable tub. Hangs hose in tub and attaches opposite end to sand mill intake. Turns valve to circulate cooling water through jacket to prevent mill overheating. Presses buttons to start mill agitator and pump. Draws paste sample to test for dispersion, using grind gauge, and adjusts pump speed as indicated by test results. Turns lever to open gate and starts pump to discharge ground mixture from machine. Washes residue from filter screen, using brush and solvent. Starts pump to clean sand mill and hose system, using solvent.
GOE: 06.02.11 STRENGTH: M GED: R3 M1 L2 SVP: 3 DLU: 77

555.682-022 STONE-MILL OPERATOR (paint & varnish) alternate titles: paint grinder, stone mill; stone-grinder operator

    Operates mills equipped with grinding stones to grind paint or paint ingredients to specified fineness: Weighs ingredients, such as pigments and oil on scale and dumps them into feed hopper of mill. Starts mill and turns valve to admit steam into mill jacket to heat ingredients. Feels or examines mixture to determine fineness of grind. Turns screws to set clearance between grinding stones to grind ingredients to specified fineness. Opens valve or starts pump to transfer mixture into cooling and storage tanks. Cleans millstones, hoppers, and scrapers, using hot water hose, solvent, and brushes. Replaces worn grinding stones, using handtools and hoist.
GOE: 06.02.11 STRENGTH: H GED: R3 M1 L2 SVP: 3 DLU: 77

555.685-010 BEATER OPERATOR (chemical) alternate titles: pulping-machine operator

    Tends machine that cuts strands of nitrocotton or pyrocotton into smaller segments for processing: Pumps nitrocotton slurry to feed tanks, starts beater blades, and opens valves to force slurry against blades. Turns handwheel to adjust speed of blades during operation according to gauge reading and process specifications, to produce uniformly beaten product. Pumps beaten slurry over sieve to remove water. Submits samples of batch to laboratory for approval of product texture. Starts agitators in tub to loosen nitrocotton and pumps it into $T3poaching$T1 tubs for removal of impurities.
GOE: 06.04.11 STRENGTH: L GED: R2 M1 L1 SVP: 3 DLU: 77

555.685-014 BONE CRUSHER (chemical) alternate titles: glue-bone crusher

    Tends machine that crushes animal bones used in manufacturing animal glue: Starts bone crushing machine conveyor that carries bones into crushing machine. Pushes button to start second conveyor that carries crushed bones from machine into cooking tanks for further processing. May tend hydraulic press that extracts grease and glue from cooked bones and be designated Steam-Bone-Press Tender (chemical).
GOE: 06.04.19 STRENGTH: L GED: R2 M1 L1 SVP: 2 DLU: 77

555.685-018 COPRA PROCESSOR (soap & rel.)

    Tends battery of machines that grind and filter copra (dried coconut meat) into coconut oil and meal: Turns valves to regulate flow of steam that heats crushing machine to specified temperature. Starts conveyors, crushing machines, and expeller and signals worker to start feeding copra into feed hoppers. Feels ground copra to ensure that texture conforms to specifications. Observes oil flowing from expeller for presence of excess solids, and feels coconut meal to determine if meal contains excessive oil. Observes gauges and clarity of oil leaving filter presses to determine if pressure inside filters is within specified limits. Transfers oil to standby filter presses when clarity or pressure deviates from prescribed standards. Records oil and meal production in log.
GOE: 06.04.19 STRENGTH: L GED: R3 M1 L2 SVP: 3 DLU: 77

555.685-022 CRUSHER TENDER (fabrication, nec) alternate titles: frame-and-scrap crusher; frame crusher; scrap crusher

    Tends machine that crushes scrap vinyl, asphalt, and asbestos preparatory to reprocessing into floor tile: Starts continuous flow of scrap material from calender and punch press onto conveyors into crusher. Observes flow of material and regulates speed of feed conveyor. Removes foreign material from conveyor and dislodges jammed material. May grind and screen mottle into various size chips used to produce marbleized effect on hard surface floor coverings.
GOE: 06.04.09 STRENGTH: H GED: R2 M1 L1 SVP: 2 DLU: 77

555.685-026 GRINDER (plastic prod.; plastic-synth.) alternate titles: cutter operator; pulverizer

    Tends machine that grinds particles of solid plastics materials to specified size: Starts machine and dumps or shovels plastics into hopper. Observes equipment to detect stoppages. May clean equipment with airhose, scrapers, or brushes. May tend machine that grinds scrap material for reuse and be designated Regrinder Operator (plastic prod.).
GOE: 06.04.02 STRENGTH: H GED: R2 M1 L1 SVP: 2 DLU: 77

555.685-030 GRINDER (rubber goods; rubber reclaim.) alternate titles: chopper and cracker feeder; cracker; hog operator

    Tends mill and separating equipment that grinds scrap or devulcanized rubber to reclaim and reprocess rubber: Turns handwheel to adjust clearance between corrugated rollers of machine to accommodate stock. Loads rubber into machine hopper. Starts machine and observes stock to ensure passage through rollers. May use magnetic device to remove metal particles from ground scrap rubber. Moves handtrucks, containing rubber stock, into position for loading. May clean or replace clogged shaker screen that sifts out oversize pieces. May pick bead wires from ground rubber tire scrap [BEAD PICKER (rubber reclaim.)]. May be designated according to type of grinding as Fine Grinder (rubber reclaim.).
GOE: 06.04.07 STRENGTH: H GED: R2 M1 L2 SVP: 2 DLU: 77

555.685-034 GRINDER OPERATOR (chemical) alternate titles: crusher operator; mill operator; pulverizer tender

    Tends machine that pulverizes solid or semisolid materials used in manufacturing chemicals and related products: Installs screens of specified type and mesh in machine, using handtools, or starts auxiliary shakers (vibrating screens) that size ground particles. Starts feed conveyors, or shovels or dumps materials into machine hopper. Starts grinder and observes ground product discharged onto conveyors or into containers for impurities, lumps, or improperly sized particles. Cleans machine and conveyors, using airhose, scrapers, and brushes, to prepare equipment for grinding subsequent batches. May shovel ground product into containers for storage, shipment, or further processing. May tend machines that fill bags or drums with product. May weigh containers of materials, record weight, and enter number of containers filled on inventory records. May be designated according to material or product ground as Filtrose Crusher (chemical); Paradichlorobenzene-Machine Operator (chemical).
GOE: 06.04.11 STRENGTH: M GED: R2 M1 L2 SVP: 3 DLU: 78

555.685-038 MILL ATTENDANT II (chemical)

    Tends roll mill that crushes and disperses particles of pigment material in batches of viscid organic pigments: Starts roll mill, and scoops or pours batch of viscid organic pigment into hopper of roll mill. Observes distribution of pigment particles on roll of mill, and moves lever to adjust rollers to ensure even grinding and distribution of pigment particles in viscid batch. Places container at discharge end of mill to collect batch. Clamps lid on container to prepare container for shipment. Cleans roll mill, using solvent, brush, and cloth.
GOE: 06.04.11 STRENGTH: M GED: R2 M1 L1 SVP: 2 DLU: 77

555.685-042 PELLET-PRESS OPERATOR (chemical) alternate titles: granulator operator; hydraulic-press operator; mechanical-press operator

    Tends hydraulic press and auxiliary equipment that forms, granulates, and sizes calcium chloride prior to use in chemical processing: Starts automatically fed ram press that forms calcium chloride into pellets. Examines pellets ejected from press and turns dials that regulate length of ram stroke and control cooling of press, according to specifications. Tends jaw crusher, granulator, and screens that crush, granulate, and screen calcium chloride to produce granules of specified size. Lubricates and repairs equipment, using handtools. Places drums under chute to fill with finished product for shipment, storage, or further processing.
GOE: 06.04.11 STRENGTH: M GED: R3 M2 L1 SVP: 3 DLU: 77

555.685-046 PULVERIZER (chemical) alternate titles: blender; salicylic-acid blender

    Tends machine that pulverizes lumps of salicylic acid: Starts machine and flow of lumps of salicylic acid into machine. Dumps pulverized salicylic into drums. Weighs and seals drums and uses powered handtruck to transport or stack filled drums.
GOE: 06.04.11 STRENGTH: H GED: R2 M1 L1 SVP: 2 DLU: 77

555.685-050 SCRATCHER TENDER (fabrication, nec)

    Tends mill equipped with scratcher that granulates color mix for use in hard-surface floor covering: Adjusts roll clearance and speed of scratcher motor to attain required particle size, using handtools. Starts scratch mill, and positions pans under discharge trough to receive granulated mix from scratch mill. Records number of pans filled. Records color and pattern data on tickets and affixes tickets to loaded handtrucks. Pushes handtrucks to storage area. May weigh and add oils or other liquid materials to mix as required. May be designated according to task performed as Color Receiver (fabrication, nec).
GOE: 06.04.09 STRENGTH: H GED: R2 M1 L1 SVP: 3 DLU: 77

555.685-054 SECOND OPERATOR, MILL TENDER (chemical)

    Tends roller mill and auxiliary equipment, such as pumps and agitators (reaction vessels) that facilitate production of phosphoric acid by strong-acid process from reaction of sulfuric acid with ground phosphate rock. Pumps acid into tank trucks and loads ground phosphate rock into hopper trucks as directed.
GOE: 06.04.11 STRENGTH: L GED: R3 M1 L1 SVP: 3 DLU: 77

555.685-058 SHREDDER OPERATOR (plastic-synth.)

    Tends machine that heats and chops sheets of alkali cellulose into crumbs for use in producing rayon: Opens hatch of machine to accommodate sheets of cellulose dumped into machine by other workers. Closes and secures hatch and starts machine. Turns valves and observes thermometers to maintain temperature of product at plant standard. Stops machine after prescribed time for unloading by other workers.
GOE: 06.04.09 STRENGTH: L GED: R2 M1 L2 SVP: 3 DLU: 77

555.685-062 SOAP GRINDER (soap & rel.) alternate titles: frame stripper and crusher

    Tends one or more machines that crush, screen, and pulverize soap solids and chips to form powder: Dumps soap chips into hopper of crusher, using shovel or chain hoist. Starts equipment, observes operations, and stops machines when malfunctions occur. Observes sifting of soap granules in power-driven shaker-screen and removes chunks for further grinding in crusher. Places empty drum or bag under spout of pulverizer to receive soap powder. Removes filled containers to storage area.
GOE: 06.04.19 STRENGTH: H GED: R2 M1 L1 SVP: 2 DLU: 77

555.685-066 WHEEL-MILL OPERATOR (chemical)

    Tends grinding mill that crushes powder or explosives ingredients, such as sulfur, saltpeter, and charcoal, used in manufacturing gunpowder: Charges mill with prescribed amounts of ingredients. Starts mill wheel revolving for specified time or until materials are crushed and mixed and rakes or dumps contents into containers for storage or further processing. When tending mill that crushes finished powder to grains of specified size to attain uniform ballistic properties, is designated Graining Operator (chemical). May tend vibrating screens to separate particles of varying sizes.
GOE: 06.04.11 STRENGTH: M GED: R2 M1 L1 SVP: 2 DLU: 77

555.686-010 BLOCK-BREAKER OPERATOR (chemical) alternate titles: digester operator

    Feeds equipment that breaks up cakes of dehydrated nitrocellulose to facilitate subsequent mixing and packing processes: Feeds nitrocellulose cakes into hopper of electrically powered cylinder fitted with spikes that break up cakes. Removes nitrocellulose for further processing and packing. May monitor scale to determine when specified amount of smokeless powder is expelled from machine into tub and to turn lever to stop machine.
GOE: 06.04.11 STRENGTH: H GED: R2 M1 L1 SVP: 2 DLU: 77

555.686-014 SOAP CHIPPER (soap & rel.)

    Feeds soap bars into machine that reduces them to chips: Starts machine and conveyor belt. Dumps soap bars onto conveyor belt or feeds them into machine hopper. Observes operation of machine that automatically reduces bars to chips and discharges chips onto conveyor belt or into tray. Routes soap chips by conveyor belt to drying room, or spreads chips evenly in trays and removes them to drying room. May fill boxes with soap flakes or bars of soap.
GOE: 06.04.09 STRENGTH: M GED: R1 M1 L1 SVP: 2 DLU: 77

555.687-010 SCALE OPERATOR (chemical)

    Weighs finished glue from crushing units, and dumps it into containers for shipment.
GOE: 06.03.02 STRENGTH: L GED: R2 M1 L2 SVP: 2 DLU: 77

556 CASTING AND MOLDING OCCUPATIONS, N.E.C.

    This group includes occupations, not elsewhere classified, concerned with shaping or solidifying molten or powdered materials by pouring, injecting, or pressing them into molds or other receptacles, and allowing or causing them to solidify.

556.130-010 SUPERVISOR, PLASTICS FABRICATION (boot & shoe; inst. & app.; plastic prod.; plastic-synth.)

    Supervises and coordinates activities of workers engaged in casting, molding, inspecting, and packaging fabricated plastic products: Sets up and adjusts or oversees set up of machines and equipment used to fabricate products, according to blueprint specifications. Reviews production schedules and assigns work. Inspects products for defects, such as surface flaws, color, flashing, or die marks. Measures product to verify conformance to specifications, using measuring instruments, such as micrometers, vernier calipers, and plug gauges. Observes packaging operations and examines containers to verify conformance to standards. Trains worker in job duties and production techniques. Performs other duties described under SUPERVISOR (any industry) Master Title.
GOE: 06.01.01 STRENGTH: L GED: R4 M3 L4 SVP: 7 DLU: 89

556.130-014 SUPERVISOR, PLASTICS (toy-sport equip.)

    Supervises and coordinates activities of workers engaged in manufacturing molded plastic toys and toy parts: Sets up injection-molding machines. Trains workers in operation of machines and assembly methods. Performs other duties as described under SUPERVISOR (any industry) Master Title.
GOE: 06.02.01 STRENGTH: L GED: R4 M3 L3 SVP: 7 DLU: 77

556.130-018 MOLDING SUPERVISOR (plastic prod.)

    Supervises and coordinates activities of workers engaged in molding plastic products, applying knowledge of molding machine setup and operating techniques and production machining methods: Reads operating logs to identify inoperative injection or blow molding machines, determines reasons for machine malfunction, and arranges for machine repair. Reviews production schedules and work orders, and assigns duties to workers according to order priorities. Studies quality control reports to identify product defects and directs machine operators to adjust machines to eliminate flaws. Examines molded products from each machine to verify conformance to specifications. Conducts or directs training of new employees in machine operation. Confers with management and other supervisors to resolve production problems. Performs other duties as described under SUPERVISOR (any industry) Master Title.
GOE: 06.02.01 STRENGTH: L GED: R4 M3 L3 SVP: 6 DLU: 89

556.362-010 ARCH-CUSHION-PRESS OPERATOR (rubber goods)

    Operates steam-heated conveyor press that molds and vulcanizes uncured sponge rubber to form arch cushions for rubber footwear: Reads work ticket to determine number of molds and blanks required for each style and size cushion. Notifies CALENDER OPERATOR (rubber goods; rubber tire) of stock thickness and DIE CUTTER (any industry) of dies to use and amounts of blanks needed. Selects required number of molds and baskets of blanks and supplies them to workers. Starts conveyor press and turns valves to regulate heat of vulcanizing plates. Turns handwheel to adjust distance between vulcanizing plates and molds, using feeler gauge. Directs workers engaged in positioning blanks in mold cavities and in removing molded cushions. Observes operations and examines finished product for defects, such as lumps, pits, and blisters, and to determine if mold cavities are filled and rubber is completely vulcanized. Operates warming mill to prepare stock for calendering from which blanks are cut for use in cushion press.
GOE: 06.02.13 STRENGTH: M GED: R3 M2 L2 SVP: 4 DLU: 77

556.380-010 MOLD SETTER (inst. & app.; office machines; plastic prod.; recording) alternate titles: die setter; setter, plastics-molding machine

    Sets up and adjusts automatic compression, injection, or transfer machines used to mold plastic materials to specified shape, following blueprints, and utilizing knowledge of machine functions: Reads specifications to determine machine setup and prescribed temperature and time settings. Positions, aligns, and secures assembled mold or mold components, and machine accessories, onto machine press bed, according to guide marks, using hoist, power tools, and handtools. Attaches connecting lines, such as air, oil, or water to mold, and adjusts controls to regulate mold temperature. Sets machine controls and turns dials to regulate specified machine forming pressure and plastic curing time in mold. Starts machine to produce sample product. Measures and visually inspects sample product for surface and dimensional defects, using microscope, micrometer, and gauges, and adjusts machine setup to eliminate defects. May repair and maintain machines and auxiliary equipment, using handtools and power tools. May be designated according to type of machine set up as Compression-Molding-Machine Setter (plastic prod.); Injection-Molding-Machine Setter (plastics prod.).
GOE: 06.01.02 STRENGTH: M GED: R3 M2 L3 SVP: 6 DLU: 89

556.380-014 PREFORM-MACHINE OPERATOR (button & notion)

    Sets up and adjusts battery of automatic machines that compress powdered plastics into tablets used in molding plastic buttons: Installs specified dies and punches onto machine holder plate according to tablet size specifications, using wrench. Adjusts stroke of punch according to tablet density specifications. Starts battery of automatic machines that compress powdered plastics into tablets. Breaks sample tablets between fingers to test hardness. Weighs sample lot of tablets to verify density. Adjusts machine controls to eliminate tablet defects.
GOE: 06.01.02 STRENGTH: L GED: R3 M1 L2 SVP: 4 DLU: 77

556.382-014 INJECTION-MOLDING-MACHINE OPERATOR (plastic prod.) alternate titles: injection molder; molder

    Sets up and operates injection-molding machines to cast products from thermoplastic materials: Installs dies on machine, according to work order specifications, using clamps, bolts, and handtools. Sets machine controls, regulating molding temperature, volume of plastic, molding pressure and time, according to knowledge of plastics and molding procedures. Dumps premixed plastic powders or pellets into hopper, and starts machine. Pulls lever to close dies and inject plastic into dies to cast part. Removes finished product from dies, using handtools. Trims excess material from part, using knife. May mix thermoplastic materials and coloring pigments in mixing machine, according to formula. May grind scrap plastic into powder for reuse.
GOE: 06.02.13 STRENGTH: M GED: R3 M2 L2 SVP: 5 DLU: 77

556.382-018 POLYSTYRENE-BEAD MOLDER (plastic prod.)

    Operates preexpander and continuous molding machine that expands and molds polystyrene beads under heat and pressure, forming bead board: Reads work order to determine resin type and density requirements for bead board production. Shoves intake tube in resin and presses tube into coupling of venturi feed system. Presses buttons and turns valves to activate centrifuge, supply steam, and feed resin to expander. Fills volumetric can with beads and weighs beads to determine density, using balance scale. Compares bead density with production requirements. Reads steam pressure and temperature gauges and turns steam valve or rotates auger disk, adjusting heat and resin feed rate to control bead density. Connects hose of molder feed hopper to aging bin and pushes feed hopper into place to feed molding machine. Turns venturi feed valve, sending air through feeder to draw beads from hopper into molder. Starts molding machine. Guides bead board from molder through rollers of trimmer and saw to start board. Monitors gauges and observes operation of molding machine and equipment to ensure operation according to specifications. Inspects bead board for specified fusion and finish. Turns steam and air valves to adjust heat and bead feed rate to prevent machine overload and to correct flaws in bead board. Records lot number of resin, feed rate, and steam pressure, for various densities and board dimensions. Computes production in board feet to determine output.
GOE: 06.02.13 STRENGTH: M GED: R3 M2 L2 SVP: 4 DLU: 77

556.385-010 CENTRIFUGAL-CASTING-MACHINE TENDER (button & notion)

    Tends centrifugal casting machine that casts plastic cylinders used in fabrication of button blanks: Mixes resins and chemicals to form liquid plastic, following formula. Sets timing device which stops machine automatically, and presses button to start centrifugal casting machine. Pours liquid plastic into rotating drum of machine that spreads, hardens, and shapes mixture into cylindrical layer of uniform thickness on wall of drum. Slits cylinder in straight line along length, at end of cycle, using razor, and peels and removes sheet from drum wall. Uncurls and spreads sheet on table and dusts sheet with powder, using mitt, to dry surface. May pour plastic mixture of different color onto semihardened first layer. May tend machine that cuts button blanks from sheet.
GOE: 06.04.19 STRENGTH: M GED: R3 M2 L2 SVP: 3 DLU: 77

556.484-010 SCAGLIOLA MECHANIC (nonmet. min.) alternate titles: imitation-marble mechanic

    Molds imitation marble (scagliola) into objects, such as desk sets, penholders, sections of pillars, and interior decorative slabs: Compounds materials in vat according to formula. Pours mixture into molds or on glass-flanged table. Dumps set pieces out of molds. Smooths objects with brick covered with moist emery, rottenstone, or other abrasive. Polishes parts with felt-covered brick. May use acetic acid solution to increase polishing quality of felt and add to luster of polished surface.
GOE: 06.02.30 STRENGTH: H GED: R2 M2 L1 SVP: 5 DLU: 77

556.582-010 PLATE MOLDER (pen & pencil; print. & pub.)

    Operates hydraulic press, equipped with steam or electrically heated platens, to cast rubber or plastic matrices and rubber dies or types: Turns dial to set electric thermostat or steam valves to maintain specified temperature in press. Inserts chase containing type into press to heat type to specified temperature, or inserts engraved metal plate into press. Places sheet of hard plastic or similar material on type and allows to heat for prescribed period of time. Pulls lever to impress material into type form to make matrix. Peels matrix from type, places rubber of plastic sheet on matrix and inserts it in press. Places metal strips (bearers) of specified thickness along sides of rubber or plastic and matrix to limit depth of pressing and determine thickness of die. Repeats heating and casting process to produce rubber die. Trims excess rubber from edges of designs, letters, symbols, and figures, using curved knife. May mix casting compound and water to puttylike consistency, spread compound on mold plate, invert casting plate over type, press compound into type and dry compound in oven. When making rubber dies or type, may be known as Vulcanizer, Rubber Plate (pen & pencil; print. & pub.).
GOE: 06.02.18 STRENGTH: M GED: R3 M2 L2 SVP: 4 DLU: 77

556.585-010 CASTING-ROOM OPERATOR (plastic-synth.) alternate titles: hopper operator

    Tends equipment that forces viscose fluid between two adjustable metal bars and into acid bath that coagulates fluid into continuous sheet of cellophane: Reads gauges and observes image on video display screen to ascertain thickness and uniformity of cellophane sheet. Turns clamp nuts, using wrench, to adjust bar gap to produce sheet of specified thickness and uniformity. Turns valves and starts pumps to regulate flow of viscose. Maintains log of operating conditions and output of casting machine.
GOE: 06.04.13 STRENGTH: L GED: R3 M2 L2 SVP: 4 DLU: 77

556.585-014 POLYMERIZATION-OVEN OPERATOR (plastic-synth.) alternate titles: oven attendant

    Tends steam oven that heats liquid plastics in glass molds (cells) to form sheets: Examines and removes defective molds from handtrucks. Loads trucks holding molds into ovens and records time molds entered ovens. Turns steam and cold-air valves to maintain specified pressure and temperature in oven. Inserts knife into baked sheet or feels sheet to determine that sheet is baked to specifications.
GOE: 06.04.13 STRENGTH: M GED: R2 M1 L1 SVP: 3 DLU: 77

556.587-010 MOLD PARTER (plastic-synth.) alternate titles: cell stripper, final; parter

    Removes plastics sheets from glass molds (cells): Positions mold on stand or table. Inserts wedge between edges of glass plates and pries slates from plastics sheet. Stacks plate glass on rack or trucks. Records weight of plastics sheets. May lower molds into soaking tanks to loosen plastics sheet, using hoist.
GOE: 06.04.40 STRENGTH: M GED: R2 M1 L1 SVP: 2 DLU: 77

556.665-010 CAKE-PRESS OPERATOR (plastic-synth.)

    Tends hydraulic presses that compress and bake chipped, rolled, or slabbed plastics materials into cake molds for sheeting: Turns valves to regulate pressures and temperatures in baking and cooling presses. Turns dial indicator arm to set press-cycle time. Pulls hopper lever to fill mold with specified weight of plastics chips. Places platen on top of mold and lifts filled mold to roller conveyor. Pushes baked molds out of heated press, using bar. Pushes filled molds from conveyor and supply rack into baking press. Turns valve to close press. Observes meters and gauges to verify specified temperatures, pressures, and press-cycle times.
GOE: 06.04.13 STRENGTH: H GED: R3 M2 L1 SVP: 4 DLU: 77

556.665-014 CORRUGATOR OPERATOR (plastic-synth.)

    Tends machine that pulls thermosetting plastics sheeting materials through preheating oven and forming frames to form sheets to specifications: Turns dials on control panel to regulate specified temperatures in oven and molds. Moves lever to regulate tension on sheeting. Observes gauges to verify temperatures. Observes width and alignment of sheeting to ensure flanging of sides. Positions mold frame laterally in machine to correct alignment. Feels stiffness and consistency of molded sheeting to detect machinery malfunctions. Signals PLASTICS-SPREADING-MACHINE OPERATOR (plastic-synth.) to synchronize feed of materials into molding process. Replaces molds in frame to conform to product specifications. Patches tears in film, using gummed tape.
GOE: 06.04.13 STRENGTH: L GED: R3 M2 L2 SVP: 4 DLU: 77

556.665-018 MOLDER, PIPE COVERING (plastic prod.)

    Tends equipment that fuses granulated polystyrene into pipe coverings, used for insulation: Positions funnel into top of mold and dumps or opens chute of overhead hopper to load specified quantities of material. Removes funnel and adjusts stripper plate and cutter rim to ensure molding of material into specified sizes and shapes. Manually locks mold and opens steam valve to admit heat. Observes heat recorder and adjusts valves to attain specified temperature to fuse materials for prescribed period of time. Unlocks mold and removes pipe covering, using hoist. Moves product to storage area, using handtruck. May mold special products, such as toys and games, and be designated Specialty Molder (plastic prod.).
GOE: 06.04.13 STRENGTH: M GED: R2 M1 L1 SVP: 3 DLU: 77

556.682-010 BLOW-MOLDING-MACHINE OPERATOR (plastic prod.)

    Sets up and operates blow molding machine to mold plastic products according to specifications: Turns valves to start flow of water and release air pressure to machine. Moves machine controls to set timing unit and temperature of heating unit and start automatic feed mechanism. Adjusts machine mandrel and aligns mandrel with mold chamber, using wrenches. Starts molding machine that automatically feeds material from mixing unit to mandrel and to mold chamber. Closes chamber to mold product under heat and pressure. Removes workpiece from mold after timing device opens mold, and trims excess material from workpiece, using knife or bandsaw. Regrinds excess material and unsatisfactory workpiece for reuse, using grinding machine. May weigh completed workpiece to determine accuracy of machine operation.
GOE: 06.02.13 STRENGTH: L GED: R3 M2 L2 SVP: 3 DLU: 77

556.682-014 COMPRESSION-MOLDING-MACHINE OPERATOR (elec. equip.; plastic prod.)

    Sets up and operates compression molding machines to mold plastic and carbon, graphite, or copper powder products according to specifications: Installs dies on press, using clamps, bolts, and handtools, and coats dies with parting agents, according to work order. Sets thermostat to regulate temperature of dies. Weighs premixed compounds and dumps compound into die well, spreads fabric on die and dumps compound over fabric, or fills hoppers of machines that automatically supply compound to dies during machine operation, using scoop. Presses button or pulls lever to activate machines to compress compounds between dies to form and cure specified products. Removes cured products from mold, using handtools and airhose. Observes machine operation and examines products ejected by machines to determine whether products meet specifications, using calipers. Turns pressure control knobs, bolts, and handwheels to adjust machines. May mix catalysts and coloring pigments with plastic compound, using paddle and mixing machine. May operate compression molding machines to form product under pressure only and be designated Cold-Molding-Press Operator (plastic prod.). May be designated Press Operator, Carbon Products (elec. equip.).
GOE: 06.02.13 STRENGTH: H GED: R3 M2 L2 SVP: 5 DLU: 88

556.682-018 PLODDER OPERATOR (soap & rel.) alternate titles: plodding-machine operator

    Sets up and operates plodder machine to compress milled soap into bars: Unbolts head of machine and inserts specified plate that shapes and sizes bar. Opens valves to admit steam into heating coils, water to reduce heat caused by friction on compression screw, and create vacuum to draw soap through machine. Unbolts filter cap from machine and changes filter. Starts machine. Inspects compressed bars for specified color, size, and smoothness.
GOE: 06.02.18 STRENGTH: L GED: R3 M1 L2 SVP: 4 DLU: 77

556.682-022 COMPRESSOR (elec. equip.; pharmaceut.)

    Sets up and operates machine to compress granulated or powdered ingredients into products, such as medicinal tablets and storage battery pellets: Installs dies in machine and adjusts spring tension and ram pressure of air- or hydraulic-powered press, according to specifications, using handtools. Presses control button to activate machine. Scoops ingredients into hopper or positions canister of powder on top of hopper, using overhead lift. Raises lever to stop machine and collects samples of product, according to established frequency, using tweezers. Examines, weighs, and tests samples for defects, such as surface chips and pits, soft centers, and excessive brittleness, using micrometers, scale, and hardness tester; or determines dimensions of sample to verify machine setup, using calipers, micrometers, and go-not-go gauges. Routes sample to lab for analysis, according to procedure. Adjusts machine pressure and tension to remove product flaws and ensure conformity to product specifications. Records product information, such as scrap quantity, machine number, and ingredients, used to complete work ticket. Places completed work tickets with trays of product awaiting further processing. Removes and cleans dies and compression chambers, using swabs. May only operate machines and notify supervisor or setup personnel of needed adjustments to machines. May pour metal bottom sections of battery and battery pellets into bins of consolidation equipment that operates automatically in conjunction with press machines to insert pellets into cans to form partial assembly of battery. May apply heat to pellets to impart desired color prior to assembly into bottom sections of battery, using torch and asbestos squares. May be designated Compressor, Battery Pellets (elec. equip.).
GOE: 06.02.11 STRENGTH: M GED: R3 M2 L2 SVP: 4 DLU: 87

556.684-010 CELL INSPECTOR (plastic-synth.) alternate titles: mold inspector

    Inspects viscous plastics material in plate glass molds (cells) and removes defects preparatory to curing: Examines material through glass sheet to detect defects, such as air bubbles, dirt particles, and other foreign matter. Stands cell on end to elevate bubbles to surface and inserts spatula between molds to remove bubbles and foreign matter from edges. Inserts metal clip into mold, using spatula, and maneuvers clip, using magnet to remove defects from body of cell. May weigh cell on floor scale.
GOE: 06.03.02 STRENGTH: L GED: R2 M1 L1 SVP: 4 DLU: 77

556.684-014 ENCAPSULATOR (aircraft mfg.) alternate titles: molder, resin

    Seals and encapsulates magnetic, electrical, electronic, and mechanical components of aircraft and missile parts and assemblies in plastic and other sealant materials, using handtools, power tools, and equipment: Mixes specified amounts of resins, curing agents, and fillers in container, according to formula, using spatula. Cleans parts to be sealed and encapsulated, using solvents, brush, and rags. Positions component parts in molds and pours or injects sealing compound into molds. Places molds in preset oven for specified time to harden mixture around units. Smooths and finishes surfaces of hardened sealing compound, using scratch remover, files, sander, and other work aids. May apply protective coating to component parts by spraying or dipping parts in resin vat. May engrave identifying symbols, letters, and numbers on unit encasement, using pantograph engraving machine. May inspect components prior to sealing and encapsulating, using preset measuring devices. May operate curing equipment. May build temporary molds from metal, putty, plastic, and other materials.
GOE: 06.04.34 STRENGTH: M GED: R3 M2 L2 SVP: 4 DLU: 88

556.684-018 MOLD-FILLING OPERATOR (plastic-synth.) alternate titles: cell pourer; flat-sheet maker

    Casts plastics resin monomer in glass molds (cells) to form sheets: Opens feedline to fill scale tank with specified amount of solution and mounts cell on filling table. Moves table lever to hold cell at inclined position and inserts funnel in cell opening. Fills mold with premeasured amount of syrup, using pitcher or hose. Turns valves to control solution flow rate and adjusts angle of cell to avoid formation of air bubbles. Removes funnel and seals mold opening with tape, gasket, or other sealing device. Places cell on rack.
GOE: 06.04.32 STRENGTH: M GED: R2 M1 L1 SVP: 4 DLU: 77

556.684-022 NEEDLE-BAR MOLDER (carpet & rug)

    Positions loom needles into slots of mold and pours liquid resins into mold to cast needle bars for use in weaving on looms: Selects type and size mold according to type and size loom needles to be set. Weighs out and mixes resins and hardeners to prepare casting material. Inserts and aligns loom needles into slots of mold, and clamps top onto mold. Pours casting mixture into opening in mold and allows mixture to set for specified time. Removes cast needle bar from mold, using pliers, and smooths rough spots, using steel wool, sandpaper, and electric emery wheel. Breaks up cracked or broken needle bars, using hammer, to salvage reusable loom needles. Hammers out bent places in used loom needles to prepare needles for recasting.
GOE: 06.04.32 STRENGTH: L GED: R2 M1 L1 SVP: 2 DLU: 77

556.684-026 RUBBER MOLDER (fabrication, nec)

    Molds rubber display statuettes and models of hands, feet, and heads for attachment to display mannequins: Brushes lubricant onto interior of mold. Pours liquid rubber into mold until full. Pours surplus rubber from mold after shell of rubber has formed on inside of mold. Strips form from mold after rubber has set. Trims edges of form, using knife and smooths surface, using sandpaper.
GOE: 06.02.29 STRENGTH: L GED: R2 M1 L1 SVP: 4 DLU: 77

556.684-030 LOADER-DEMOLDER (furniture)

    Casts plastic furniture parts, using molds, furniture stock, and plastic molding compound and gun: Conveys pallets loaded with furniture stock to work site, using industrial truck. Places furniture stock inside specified mold, clamps mold to furniture stock, and places mold onto conveyor. Inserts nozzle of molder gun between mold and furniture stock and dispenses plastic compound into mold around furniture stock to cast plastic furniture parts, such as edge bands. Unclamps and removes cast parts from mold after specified setup time, using chisel and knife.
GOE: 06.04.32 STRENGTH: M GED: R2 M1 L1 SVP: 3 DLU: 86

556.685-010 AIR-BAG CURER (rubber tire)

    Tends steam-heated press that molds and cures air bags used in automatic tire curing presses: Weighs slugs of rubber to obtain specified charge. Positions bag core in mold, using hoist. Places charge in mold cavity and presses switch to close press and start curing cycle. Lifts core from mold when curing cycle is completed. Pushes lever to lower hydraulic clamp on core and pulls air bag free, using hoist. Counts and tallies cured air bags. May set automatic timer for specified curing cycle.
GOE: 06.04.13 STRENGTH: M GED: R2 M1 L1 SVP: 2 DLU: 77

556.685-014 BLOCK-PRESS OPERATOR (chemical) alternate titles: powder-press operator

    Tends hydraulic press that compresses smokeless powder into block form for further processing: Charges press, using colloidal smokeless powder. Closes compression chamber and opens valves to compress powder. Removes block from chamber. May be designated according to pressing stage as Final-Block-Press Operator (chemical); Preliminary-Block-Press Operator (chemical).
GOE: 06.04.11 STRENGTH: M GED: R2 M1 L1 SVP: 2 DLU: 77

556.685-018 BOWLING-BALL MOLDER (toy-sport equip.)

    Tends presses that mold cover material on bowling-ball cores preparatory to steam curing, performing any combination of following duties: (1) Cuts rubber cover stock to approximate size, using knife, and lays specified number of rubber squares in mold half. (2) Positions mold half under press ram and presses button to lower ram into mold to shape rubber. Places bowling-ball core in every other mold with marked, weighted area away from seam. (3) Places cover, mold half on core, and pushes pins through mold flanges to hold halves in position. Places mold into press and presses button to lower ram and to mold cover to core. (4) Pulls $T3flash$T1 from mold seam and places or pounds brackets onto mold flange to hold mold together during curing. Opens press, pounds pins out of flange, and stacks mold on pallet. May clean cores prior to molding operations, using cabinet sandblast equipment.
GOE: 06.04.13 STRENGTH: M GED: R2 M1 L1 SVP: 3 DLU: 77

556.685-022 COMPRESSION-MOLDING-MACHINE TENDER (plastic prod.) alternate titles: molder; plastic-press molder

    Tends compression-molding machines that mold thermosetting plastics into products, such as automobile heater housings, ashtrays, buttons, electronic parts, plastic panels, and dishes: Dumps specified amount of plastic powders or pellets into hopper of machine, or positions pellets or sausage-shaped plastics in mold installed on machine. Starts machine that compresses plastic into mold under heat and pressure, and allows plastic to set for specified time. Removes product from mold and cleans mold, hopper, and bed of machine, using airhose and handtools. May place plastics material on hot grid or in oven to soften it prior to molding. May weigh prescribed amount of material for molding. May place plastic sheet into machine fixture to fabricate buttons.
GOE: 06.04.13 STRENGTH: L GED: R2 M1 L1 SVP: 2 DLU: 77

556.685-026 COSMETICS PRESSER (pharmaceut.) alternate titles: molder; rouge presser

    Tends equipment that compresses powdered cosmetics, such as face powder, eye shadow, or rouge, into cakes or sticks for use in compacts or cylindrical cases by either of following methods: (1) Spreads or brushes glue onto pans set into indentations of mold board. Fills individual molds with powder and pulls handle to force die into molds and compress powder. Positions mold on die of press and starts press that squeezes powder into cakes or sticks. Removes molds and dumps product onto tray to dry. (2) Scoops cosmetic powder into hopper of molding and pressing machine and starts machine. Places molds on conveyor that carries them into machine for automatic filling and pressing. Shakes or brushes loose powder from cosmetic cakes ejected by machine and places them on tray to dry. Discards cakes having irregularities, such as bubbles, indentations, and cracks. Feeds mold pans into glue machine and turns preset valves to spray molds with glue and dry for reuse.
GOE: 06.04.09 STRENGTH: L GED: R2 M1 L1 SVP: 3 DLU: 77

556.685-030 DIPPER (rubber goods)

    Tends machine that dips forms into tanks of coagulant or liquid latex to produce rubber goods, such as gloves and balloons: Lifts $T3form board$T1 from conveyor and fastens form board to machine bed with hinge clamps and slide bolts. Manually inverts bed and moves lever to submerge forms in tank of solution according to specifications. Raises and rocks bed to create movement that dries coagulant or equally distributes and sets latex on forms. Lifts boards to conveyor for next process. Adds solutions to tanks, using dipper to speed drying time or replenish supply to specified level. May tend automatic dipping machine that fabricates artificial rubber gloves. May be designated according to dipping solution used as Coagulant Dipper (rubber goods); Latex Dipper (rubber goods).
GOE: 06.04.13 STRENGTH: M GED: R2 M1 L1 SVP: 2 DLU: 77

556.685-034 DIPPING-MACHINE OPERATOR (rubber goods)

    Tends conveyorized machine that dips forms into liquid latex to produce rubber goods, such as balloons, finger cots, and prophylactics: Mixes liquid latex in drums, using electric mixer or wooden paddle. Dips latex from drum into cans, and conveys filled cans on handtruck to machine holding tanks. Pours latex into gravity flow tank to maintain specified tank level. Starts machine that moves forms through various vats, driers, ovens, and rinses in continuous operation to form product. Removes sample of latex goods from form after final dip, weighs it, and adds solution of ammonia or latex to tank when weight does not meet requirements. Changes filters in latex tanks. Replaces dirty, loose, or broken forms on conveyor. Adds water softener to curing tanks. Verifies temperature and humidity on instrument control charts.
GOE: 06.04.13 STRENGTH: M GED: R2 M1 L1 SVP: 3 DLU: 77

556.685-038 INJECTION-MOLDING-MACHINE TENDER (plastic prod.; recording; rubber goods)

    Tends injection-molding machines that form plastic or rubber products, such as typewriter keys, phonograph records, and luggage handles: Dumps plastic powder, preformed plastic pellets, or preformed rubber slugs into hopper of molding machine. Starts machine that automatically liquefies pellets, slugs, or powder in heating chamber, injects liquefied material into mold, and ejects molded product. Observes gauges to ensure specified molding temperature and pressure are maintained. Examines molded product for surface defects, such as dents and cracks. May heat plastic material over steamtable or in oven to prepare material for molding. May remove product from mold, using handtools. May trim $T3flash$T1 from product, using shears or knife. May place product in cold water or position it on cooling fixture to prevent distortion.
GOE: 06.04.10 STRENGTH: L GED: R2 M1 L1 SVP: 2 DLU: 81

556.685-042 MATTING-PRESS TENDER (rubber goods)

    Tends press that molds and cures rubber sheeting for use as floor matting: Places roll of calendering rubber sheeting in $T3letoff rack$T1 using hoist, and unwinds sheeting onto bed of steam-heated curing press. Aligns rubber sheeting with edges of die, and closes press to mold and cure rubber sheeting for specified time. Winds cured rubber matting onto powered spindle. Continues process until roll is completed.
GOE: 06.04.13 STRENGTH: M GED: R2 M1 L1 SVP: 2 DLU: 77

556.685-046 MOLDER, FOAM RUBBER (rubber goods)

    Tends hydraulic steam press that heats molds filled with mixture of foam rubber particles and latex (liquid rubber) to form cushions and mattresses: Carries filled mold from mixing machine to table of press. Smooths mixture in mold to distribute it evenly. Positions top cover on mold and places mold on press bed. Turns valve to lower ram against mold that heats and cures mixture. Removes mold, dumps molded product, and places it on storage rack. May grind foam rubber scrap, using electrically powered grinding machine. May mix ground foam rubber particles with latex, using mixing machine, and fill molds with mixture [MIXER, FOAM RUBBER (rubber goods)].
GOE: 06.04.13 STRENGTH: M GED: R2 M1 L1 SVP: 3 DLU: 77

556.685-050 MOLDER, MACHINE (pharmaceut.)

    Tends equipment that heats and transfers mixture to conveyorized molds to form drug and toilet products, such as lipsticks and suppositories: Sets thermostat control to specified setting and opens valve to circulate coolant through pipes of mold-cooling chamber. Starts conveyor that carries empty molds into cooling chamber. Turns valve to admit product to reservoir of molding machine, starts agitator, and sets thermostat control to heat product to specified pouring temperature. Starts pump to fill molds as they pass on conveyor. Removes damaged or defective molds and adjusts mold scraper to prevent overflow or underfilling of molds.
GOE: 06.04.11 STRENGTH: M GED: R3 M2 L1 SVP: 4 DLU: 77

556.685-054 PARADICHLOROBENZENE TENDER (chemical) alternate titles: paradi tender; para operator

    Tends equipment that cools and solidifies paradichlorobenzene preparatory to storage, shipment, or further processing: Pumps chemical into water-jacketed molds and turns valve to circulate chilled water through jacket and solidify material. Opens valve to admit steam to jacket to loosen crystallized product for removal. May break solidified product into smaller pieces preparatory to crushing, using wooden stick. May tend crusher to granulate product. May fill containers with crushed product and transfer containers to storage or shipping area, using handtruck.
GOE: 06.04.11 STRENGTH: L GED: R2 M1 L1 SVP: 2 DLU: 77

556.685-058 PILLING-MACHINE OPERATOR (plastic prod.; plastic-synth.) alternate titles: biscuit-machine operator; briquetting-machine operator; pelletizer; pellet-machine operator; preform-machine operator; tablet-machine operator

    Tends pilling machine that compresses plastics powder into pellets or biscuits of specified weight and shape: Dumps plastics powders into machine hopper, using drum hoist or starts screw conveyor that loads hopper with material from storage bin. Opens gate valve to control flow of powder from hopper into machine. Turns steam valve to regulate temperature of machine according to ammeter gauge, and adjusts die pressure to attain specified hardness of pill. May clean, change, and adjust die. May be designated according to type of machine tended as Rotary Preformer (plastic prod.; plastic-synth.); Single-Stroke Preformer (plastic prod.; plastic-synth.).
GOE: 06.04.13 STRENGTH: H GED: R2 M1 L1 SVP: 4 DLU: 77

556.685-062 POLYSTYRENE-MOLDING-MACHINE TENDER (plastic prod.)

    Tends automatic molding machines that mold preexpanded polystyrene beads under heat and pressure into cast foam products: Observes platens and listens to steam exhaust to determine end of molding cycle. Lifts cast foam products, such as balls, coolers, displays, and packing nests, from mold cavities while platens are parting. Presses cycle repeat button to reactivate molding machine, and blows loose beads from mold cavities as platens close, using airhose. Examines castings for post-expansion, fusion, shrinkage, and pits to ensure product meets quality standards. Rubs wire screen along mold parting line on casting to remove $T3flash.$T1 May wrap advertising label around cooler cover and secure label, using masking tape. May adjust machine knobs to compensate for variations in product, such as moisture content and bead density.
GOE: 06.04.13 STRENGTH: L GED: R2 M1 L1 SVP: 2 DLU: 77

556.685-066 PRESS TENDER (rubber goods; rubber tire; toy-sport equip.) alternate titles: forming-press operator; hydraulic-steam-press operator; molding-press operator

    Tends heated presses that mold and cure rubber goods or sports equipment, such as bowling balls, golf and tennis ball covers, and golf ball cores: Moves mold to press, using powered truck or handtruck. Sprays inner surface of mold with lubricant to prevent rubber from sticking. Positions $T3preform rubber,$T1 half-shells, or cores in mold cavities or on lower die and places upper die over rubber. May insert metal parts in mold cavities to join with rubber during process. Closes mold and pushes it into press or moves lever to raise lift-table. Closes and starts press. Sets timer for specified curing time. Pulls mold from press and strips articles from mold. Tears $T3flash$T1 ring from edge of workpieces. Removes rind from molds, using airhose and steel wool. May cut preform rubber for molding. May be designated according to articles molded as Curer, Acid Drum (rubber goods); Gasket Molder (rubber goods); Golf Ball Molder (toy-sport equip.); Heel Molder (rubber goods); Outsole Molder (rubber goods); Rubber-Heel-And-Sole Press Tender (rubber goods).
GOE: 06.04.13 STRENGTH: M GED: R2 M1 L1 SVP: 2 DLU: 77

556.685-070 RECORD-PRESS TENDER (recording)

    Tends automatic steam-hydraulic press that molds plastic compound into phonograph records: Places record labels over top and bottom center pins of press, and places preweighed and heated biscuit (plastic compound) into press mold. Moves lever to close mold and start press on cycle that molds biscuit under pressure and heat to form phonograph record. Removes record at end of cycle, places record onto spindle of edge trimmer, and presses lever to start turntable that rotates record against circular blades to trim $T3flash$T1 from record edge. Examines record for flaws, such as discoloration and scratches. Retains specified record samples for audio testing. May tend machine that automatically inserts labels and compound into mold, forms record, punches center hole, and trims flash from record edge.
GOE: 06.04.13 STRENGTH: L GED: R2 M1 L1 SVP: 3 DLU: 77

556.685-074 SLUG-PRESS OPERATOR (elec. equip.)

    Tends machine that compresses moist welding rod coating mix into cylinder-shaped slugs: Dumps mix into forming chamber of slug press, using forklift. Presses button to close press and activate ram that automatically forms and ejects slug. Slips cellophane bag over slug or places it in container to prevent crusting or dehydration. Cleans machine, using brush, scraper, and airhose.
GOE: 06.04.19 STRENGTH: M GED: R2 M1 L1 SVP: 2 DLU: 77

556.685-078 STAMPER (chemical) alternate titles: press operator; stamp-press operator

    Tends press that compacts deodorant and mothicide crystals into blocks: Bolts dies in press, using handtools. Pours crystals into lower half of press die. Turns handwheel to force upper half of die down and press crystals into block form. Lifts lever to eject block from press.
GOE: 06.04.11 STRENGTH: L GED: R2 M1 L1 SVP: 2 DLU: 77

556.685-082 VACUUM PLASTIC-FORMING-MACHINE OPERATOR (plastic prod.) alternate titles: molder, vacuum

    Tends machine that molds thermoplastic sheets into plastic products: Places sheet on top of mold, positions sealing frame around sheet, and fastens frame to rim of mold, using clamps. Pushes button to start machine that heats sheet, draws it into mold to form product, and sprays product with cool water or air to harden product. Removes product from molds and reloads thermoplastic sheet into machine. May trim excessive molding material from products, using knife, scissors, or bandsaw.
GOE: 06.04.13 STRENGTH: L GED: R2 M1 L1 SVP: 2 DLU: 77

556.685-086 BLOW-MOLDING-MACHINE TENDER (toy-sport equip.)

    Tends blow molding machine that automatically forms plastic toy parts: Observes continuous operation of automatic molding machine, adjusts plastic flow, and notifies supervisor of machine malfunctions. Removes molded part from conveyor or mold and trims $T3flash$T1 from part, using knife, hammer, and file. Examines part for defects, such as bubbles, splits, or thin areas, and weighs part on scale to ensure specifications are maintained. Stacks molded parts in boxes for subsequent processing. Throws flash and rejected parts into regrinder machine to be recycled.
GOE: 06.04.13 STRENGTH: L GED: R2 M1 L1 SVP: 2 DLU: 86

556.685-090 CENTRIFUGAL-CASTING-MACHINE TENDER (plastic prod.) alternate titles: molder operator

    Tends machine that casts plastic containers: Fills tubs with prescribed amounts of colored thermoplastic powder and zinc compound, using scoop and scale. Positions tubs containing mixture to facilitate loading of molds. Fills molds with specified amount of mixture, closes mold covers, and depresses toggle latches to lock covers in place. Presses buttons to start centrifugal-casting machine that automatically heats, spreads, hardens, and shapes mixture into plastic molds to form refuse containers. Pulls toggle latches to release mold covers and removes covers. Breaks seals that hold plastic containers in molds and removes containers from molds, using handtool. Wipes moisture from inside of molds, using cloth rag. Trims flashing (excess plastic) from containers, using utility knife.
GOE: 06.04.19 STRENGTH: M GED: R1 M1 L1 SVP: 2 DLU: 86

556.686-010 CAKE-PRESS-OPERATOR HELPER (plastic-synth.)

    Assists CAKE-PRESS OPERATOR (plastic-synth.) in compressing and baking chipped, rolled, or slabbed plastics materials into cake molds for sheeting: Positions empty molds on platform scales. Spreads plastics chips evenly over mold, using spreader. Pushes molds along roller conveyor from baking press to cooling press. Pushes cooled molds from press onto roller conveyor. Removes platen from mold and pushes it along roller conveyor to storage rack. Removes cake from mold and trims $T3flash,$T1 using knife. Stacks cakes on pallets. Pushes empty mold along conveyor to scale. Cleans molds and presses, using knife and scraper. Performs other duties as described under HELPER (any industry) Master Title.
GOE: 06.04.13 STRENGTH: H GED: R2 M1 L1 SVP: 2 DLU: 77

556.686-014 CELL STRIPPER (plastic-synth.) alternate titles: mold stripper; stripper, preliminary

    Prepares plastics sheets for removal from glass molds (cells), performing any combination of following duties: Pulls materials, such as cellophane, rubber tubing, or tape, from cells. Unscrews clamps and pries spacing devices from cells. Sorts rubber tubing according to size and stacks clamps in bin for reuse. Loads cells on conveyor or stacks cells in racks and lowers racks into tank solution, using hoist.
GOE: 06.04.20 STRENGTH: H GED: R2 M1 L1 SVP: 2 DLU: 77

556.686-018 STRIPPER (plastic prod.; rubber goods) alternate titles: mold stripper

    Strips molded latex or plastic products, such as masks, puppets, and footwear, from molds, performing any of following methods: (1) Removes mold from conveyor emerging from drying oven and clamps it in holder to secure mold. Trims excess plastic from mold top, using knife. Pries section of workpiece from mold wall, grips workpiece manually or using stripping pliers or $T3prongs,$T1 and twists and pulls footwear from mold. (2) Dusts talc into molds and removes masks or puppets, using knife. (3) Immerses rack of molds in water tank to cool them, dries molds, using airhose, and pulls masks or puppets from molds, using pliers. Places acceptable items on transfer belt or in box and damaged ones on salvage pile. May clean molds by hand or using steam hose. May be designated according to material used as Stripper, Latex (rubber goods); Stripper, Soft Plastic (plastic prod.).
GOE: 06.04.13 STRENGTH: M GED: R1 M1 L1 SVP: 2 DLU: 77

556.686-022 SUPPOSITORY-MOLDING-MACHINE OPERATOR (pharmaceut.)

    Fills jars with suppositories ejected from automatic molding machine, preparatory to capping: Positions empty jar under chute of machine to fill jar with suppositories ejected from machine that automatically melts, molds, and refrigerates glycerine, forming suppositories. Places filled jar on conveyor that carries jar to capping operation. May assist MOLDER, MACHINE (pharmaceut.) in adjusting mold scraper and replacing damaged or defective molds.
GOE: 06.04.11 STRENGTH: L GED: R1 M1 L1 SVP: 2 DLU: 77

556.687-010 BOWLING-BALL-MOLD ASSEMBLER (toy-sport equip.)

    Coats bowling ball molds components with parting agent, installs ball cores, and assembles and seals molds preparatory to filling and curing: Inspects parts to ensure clean and dry condition and applies parting agent, using brush or spray gun. Installs core on support bolt and turns bolt to adjust core to center of mold. Lays yarn gasket in groove around bottom flange, aligns top of mold over bottom, and secures it with thumbscrews or clamps. Places completed mold in rack for filling. May disassemble molds and remove cured balls from molds.
GOE: 06.04.32 STRENGTH: M GED: R2 M1 L1 SVP: 2 DLU: 77

556.687-014 CELL PREPARER (plastic-synth.)

    Prepares molds (cells) used in casting liquid plastics materials into sheet form: Inserts wooden or plastic wedges between sides of glass cells to widen cell opening. Folds paper into funnel shape and inserts paper funnel in cell opening to provide passage for liquid plastics. Records identification data on tag and attaches it to cell.
GOE: 06.04.24 STRENGTH: H GED: R2 M1 L1 SVP: 2 DLU: 77

556.687-018 MOLD CLEANER (rubber goods)

    Cleans, stores, and distributes molds used to form rubber goods: Conveys molds to presses according to work orders, manually or using handtruck. Sprays molds with steam to remove protective oil or cleaning fluid. Immerses used molds in tank of hot cleaning fluid, manually or using hoist, to loosen adhering rubber particles. Removes rubber particles from mold cavities, using hand or powered wire brush. Brushes oil on mold before storing to prevent rusting. Places mold in storage racks. May sandblast molds to renew surfaces. May repaint identifying data on cleaned molds. May disassemble molds for cleaning and reassemble cleaned molds, using handtools.
GOE: 06.04.39 STRENGTH: H GED: R2 M1 L1 SVP: 2 DLU: 77

556.687-022 MOLDER, TOILET PRODUCTS (pharmaceut.)

    Fills molds with heated mixture to form drug and toilet products, such as lipsticks, deodorant, and eyeshadow sticks: Pours or opens valve to admit mixture slowly into mold cavities to avoid forming bubbles. Places mold on chilling plate or in refrigerator, or starts fan to cool and congeal contents. Scrapes excess material from mold, using spatula. May open mold and remove formed product. May insert lipstick cases or other containers into molds to hold and form product. May pump or pour mixture into temperature-controlled kettle prior to molding to heat mixture to pouring temperature. May be designated according to product molded as Lipstick Molder (pharmaceut.); Suppository Molder (pharmaceut.).
GOE: 06.04.11 STRENGTH: L GED: R2 M1 L1 SVP: 3 DLU: 77

556.687-026 POURER (rubber goods)

    Fills curing molds with latex to cast foam rubber products by any of following methods: (1) Inserts hose nozzle in opening of closed mold and twists hose clamp to control flow and fill mold with latex, observing vent overflow to determine when mold is full. (2) Pulls lever on bottom of mixing bowl to fill mold as mold is carried in position by conveyor. Scoops excess latex from mold, using scraper to prevent overflow during curing. May stir latex in mold, using paddle to remove air bubbles. May feel latex to determine consistency. May manually pour measured amount of latex into dipping tank into which molds are inserted to form coated latex articles.
GOE: 06.04.32 STRENGTH: M GED: R1 M1 L1 SVP: 2 DLU: 77

556.687-030 MOLD FILLER (toy-sport equip.)

    Fills bowling ball molds: Lifts mold from supply cart, places mold on holding fixture, and positions filler hole of mold under spigot of resin tank. Turns valve to open spigot and control flow of resin from tank into mold. Turns valve to stop resin flow when mold is filled. Lifts filled mold from holding fixture onto storage cart.
GOE: 06.04.32 STRENGTH: M GED: R1 M1 L1 SVP: 1 DLU: 86

557 EXTRUDING OCCUPATIONS

    This group includes occupations concerned with forcing or pulling materials through dies or similar small openings to form a variety of objects, such as plastic rods, tubing, and synthetic fibers.

557.130-010 SUPERVISOR, EXTRUDING DEPARTMENT (plastic prod.)

    Supervises and coordinates activities of workers engaged in adjusting and operating machines to extrude and print polyethylene film used in manufacture of bags: Examines polyethylene film from extruding machine for defects and conformance to dimensional specifications. Examines samples from printing machine for clarity and registration of print, color intensity, and discriminations of shading to determine quality of print on film. Trains new workers in operation and setup of machines. May adjust and install replacement parts on machines. Performs other duties as described under SUPERVISOR (any industry) Master Title.
GOE: 06.02.01 STRENGTH: H GED: R4 M3 L3 SVP: 8 DLU: 77

557.130-014 SUPERVISOR, PLASTIC SHEETS (plastic prod.)

    Supervises and coordinates activities of workers engaged in extruding plastic sheets: Observes installation of dies, and examines extruded sheets for defects. Trains new workers in machine operation and setup. May diagnose operating difficulties and adjust machine cycles. Performs other duties as described under SUPERVISOR (any industry) Master Title.
GOE: 06.02.01 STRENGTH: M GED: R4 M3 L3 SVP: 7 DLU: 77

557.382-010 EXTRUDER OPERATOR (plastic prod.; plastic-synth.) alternate titles: stuffer, vertical hydraulic; tuber operator

    Sets up and operates machine to extrude thermoplastic materials to form tubes, rods, and film according to specifications: Installs dies, machine screws, and sizing rings, using handtools. Couples hose to die holder to circulate steam, water, air, or oil to die. Weighs and mixes pelletized, granular, or powdered thermoplastic materials and coloring pigments in tumbling machine according to formula. Fills machine hopper with mixed materials, using conveyor auger, or stuffs rolls of plastic dough into machine cylinders. Starts machine and sets controls to regulate vacuum, air pressure, sizing rings, and temperature; and synchronizes speed of extrusion with pulling rolls. Examines extruded product for defects, such as wrinkles, bubbles, and splits. Measures extruded articles for conformance to specifications, using micrometers, calipers, and gauges; and adjusts speed and weight controls or turns hot and cold water, air, oil, or steam valves to obtain product of specified dimensions. Tests physical properties of product with acid-bath tester, burst tester, and impact tester. May reel extruded product into rolls of specified length and weight [EXTRUDER-OPERATOR HELPER (plastic prod.; plastic-synth.)].
GOE: 06.02.13 STRENGTH: M GED: R3 M2 L2 SVP: 5 DLU: 77

557.382-014 WINK-CUTTER OPERATOR (rubber goods)

    Sets up and operates machines to extrude uncured rubber into continuous strip and to cut strip into specified lengths and weight for molding rubber footwear outsoles: Installs dies on tube machine, turns steam valve to heat die and screw chamber, feeds milled rubber chunks into machine hopper, and starts machine to force rubber through die to form continuous strip [TUBER-MACHINE OPERATOR (rubber goods; rubber tire)]. Threads extruded strip through cold-water tank and holddown bars, and between feeder belts to cutter. Turns wheel to adjust feed speed to length of blank cut. Starts machine and measures and weighs sample blank, using ruler and scale, for conformance to specifications. Removes cut pieces from discharge belt and places them on trays.
GOE: 06.02.07 STRENGTH: L GED: R3 M2 L2 SVP: 4 DLU: 77

557.564-010 EXTRUDER-OPERATOR HELPER (plastic prod.; plastic-synth.)

    Assists EXTRUDER OPERATOR (plastic prod.; plastic-synth.) in extruding thermoplastic materials to form tubes, rods, and film: Tapes end of extruded article to reel spindle and starts machine that winds material onto revolving spindle. Measures extruded article with measuring wheel and cuts it to specified length, using saw or knife. Removes roll or coil from spindle, weighs roll, and records length and weight of roll on shipping tag. Saws scrap tubes and rods into lengths for grinding in hammer mill, using bandsaw. Starts hammer mill and feeds sawed scrap into mill to grind it for reprocessing. May mix thermoplastic materials and pigments, according to formula, for feeding extrusion machine. Performs other duties as described under HELPER (any industry) Master Title.
GOE: 06.04.13 STRENGTH: H GED: R2 M2 L1 SVP: 2 DLU: 77

557.564-014 PUMP TESTER (plastic-synth.)

    Verifies adjustment of pumps used to force cellulose solution through spinnerettes, forming rayon, to ensure that pump speed conforms with plant specifications for prescribed weight of yarn: Turns valve to transfer measured amount of solution to container and times flow, using stopwatch. Weighs container and solution and records findings.
GOE: 06.03.02 STRENGTH: L GED: R3 M2 L2 SVP: 4 DLU: 77

557.565-010 EXTRUDING-MACHINE OPERATOR (tex. prod., nec)

    Tends machine that extrudes continuous synthetic filaments from resins to be used in making twine: Pours resin into loading drum of machine, and pours buckets of color resin into hopper of machine. Cleans extruding die or installs new die in machine. Observes thermostat heat-control unit and notifies engineer of deviations from prescribed temperature. Notifies supervisor when extruded filaments fail to meet specified standards for thickness and color. Tends tumbling machine that rotates drums of resin to mix different colors of resins before they are poured into extruder.
GOE: 06.04.13 STRENGTH: H GED: R2 M1 L1 SVP: 3 DLU: 77

557.565-014 SYNTHETIC-FILAMENT EXTRUDER (plastic-synth.)

    Tends machines and auxiliary equipment that extrude continuous synthetic filaments from liquid polymer: Starts metering pumps and observes operation of machines and equipment to ensure continuous flow of filaments extruded through spinnerettes and to detect processing defects, such as drips, filament stains or missing, oversized, or fused filaments. Notifies other workers through intercom when defects occur, necessitating interruption of extruding process, to clean spinnerettes. Opens cabinet doors to cut threadlines (multifilaments) away from guides, using scissors. Lowers pan inside cabinet to catch molten filaments until flow of polymer through $T3packs$T1 is stopped. Presses metering-pump buttons and turns valves to stop flow of polymer. Cuts entangled filaments wrapped around gears of machine, using pliers. Restarts metering pumps, notifies other worker to receive threadlines, pulls extruded filaments together below spinnerettes to form threadlines, and inserts threadlines through guides to facilitate drawing process on floor below. Observes flow of finish across finish rollers and turns valves to adjust flow to specifications. Occasionally removes polymer deposits from spinnerettes and equipment, using silicone spray, brass chisel, and bronze-wool pad. Wipes finish rollers with cloths and washes finish trays with water when necessary. Marks type of malfunctions on maintenance tag, and attaches tag to machine for subsequent repair.
GOE: 06.04.13 STRENGTH: M GED: R2 M1 L1 SVP: 3 DLU: 77

557.665-010 SYNTHETIC-STAPLE EXTRUDER (plastic-synth.)

    Tends machines that form continuous synthetic filaments from liquid polymer and lay tow in cans according to specified pattern: Installs $T3pack$T1 into machine, using handtools, and turns lever to activate metering pump which controls amount of polymer extruded through pack. Catches extruded filaments in compressed-air gun and threads filaments through guides to capstans. Separates filaments at spinnerette, by hand, inserts cooling tube into spinnerette, and pushes lever to force air through tube to cool filaments. Guides tow over capstans and into device that lays tow into cans according to specified pattern. Observes machine operation, panelboard, gauges, and rotameter to detect machine malfunction. Turns valves and levers to adjust machines as necessary. Cuts windup from capstan. Notifies Polymer Department, using telephone, when color of polymer is not according to specifications.
GOE: 06.04.13 STRENGTH: M GED: R3 M1 L2 SVP: 4 DLU: 77

557.682-010 GRAINING-PRESS OPERATOR (chemical) alternate titles: finishing-powder-press operator; macaroni-press operator; powder-press operator

    Sets up and operates hydraulic press to extrude blocks of smokeless powder into strands preparatory to cutting, drying, and bagging: Attaches specified dies to compression cylinder of press with thumbscrews or clamps. Inserts block in compression cylinder and locks cover in place with thumbscrews. Turns ram control valve to extrude powder slowly to avoid explosion. Examines extruded lengths for dirt streaks and malformations. Positions fiber containers under discharge chute of each die hole, and replaces containers as they are filled.
GOE: 06.02.18 STRENGTH: H GED: R2 M1 L1 SVP: 3 DLU: 77

557.684-010 JET HANDLER (plastic-synth.) alternate titles: spinnerette cleaner

    Cleans spinnerettes that extrude synthetic fibers: Disassembles $T3packs$T1 containing spinnerettes. Disassembles spinnerettes, washes them in acid bath, and dries them with compressed air. Inspects holes in cleaned spinnerettes to detect damage or wear. Disassembles, cleans, and reassembles $T3outflow quench sticks.$T1 May reassemble cleaned spinnerettes, using wrench. May buff surface of spinnerettes, using power buffer. May clean clogged spinnerette holes, using ultrasonic vibrator.
GOE: 06.04.39 STRENGTH: H GED: R2 M1 L1 SVP: 4 DLU: 77

557.684-014 JET WIPER (plastic-synth.)

    Wipes jets (spinnerettes) through which filaments of rayon are extruded and ties broken filaments together to facilitate uninterrupted production of acetate rayon: Observes cellulose solution emerging from spinnerettes to detect interruption or narrowing of stream, indicating blockage. Wipes surface of spinnerette with thumb to remove clogged cellulose particles. Catches and ties together strands of rayon if breaks occur in filament. Notifies SPINNER (plastic-synth.) to rethread filaments through machine after repairing breaks or wiping jets. Reports permanently clogged, damaged, or worn jets to maintenance personnel.
GOE: 06.04.27 STRENGTH: L GED: R2 M1 L1 SVP: 2 DLU: 77

557.685-010 CORE EXTRUDER (elec. equip.)

    Tends manually operated extrusion press and wirecutter that extrudes and cuts paste (black mix) to form dry-cell battery cores: Loads press hopper with paste and moves lever to start ram that forces paste through die of prescribed diameter onto cutter. Pulls lever to lower wire cutter and cut extruded paste into segments (cores). Tilts cutter to dump cores onto tray.
GOE: 06.04.10 STRENGTH: L GED: R2 M1 L1 SVP: 2 DLU: 77

557.685-014 EXTRUDER TENDER (rubber goods)

    Tends machine that extrudes rubber compound to produce strands for use in making elastic yarn: Adjusts valves to regulate and maintain specified flow of rubber compound and size of extruded strand. Separates strands in acid bath with tweezers and places strands on rollers leading to curing oven. Cleans and replaces nozzles. Fills feed tank with liquid-rubber compound.
GOE: 06.04.13 STRENGTH: L GED: R2 M1 L1 SVP: 3 DLU: 77

557.685-018 PROCESSOR (plastic-synth.)

    Tends processing (washing, bleaching, and drying) section of machine that extrudes synthetic fiber filaments: Threads continuous filaments through guides and around rollers that carry product through machine, apply washing and bleaching solutions, and dry filaments prior to winding, twisting, or cutting into staple lengths. Observes gauges and moves controls to start and regulate flow of washing and bleaching solutions, applied to moving filament through openings in rollers, and to maintain temperature of drying rollers according to plant standards. Repairs breaks in filaments by tying ends together. In nylon plants, may set temperature of rolls that heat and stretch filaments to impart strength and fuse filaments into tow. May doff bobbins of yarn at end of windup cycle and reset clock device that regulates speed of filament travel according to diameter of bobbin.
GOE: 06.04.13 STRENGTH: L GED: R2 M1 L1 SVP: 3 DLU: 77

557.685-022 SECOND-FLOOR OPERATOR (plastic-synth.)

    Tends unit of spinning machine that extrudes synthetic filaments and passes filaments to draw (stretching) machine on floor below: Observes operation of machine to ensure continuous flow of filaments through spinnerettes. Inserts filaments through guides to facilitate drawing process on floor below. Presses buttons and turns valves to stop flow of polymer to clean spinnerettes.
GOE: 06.04.13 STRENGTH: M GED: R2 M1 L1 SVP: 3 DLU: 77

557.685-026 SPINNER (plastic-synth.) alternate titles: spinning operator

    Tends machine or machine section that extrudes rayon filaments preparatory to washing, bleaching, drying, and winding resulting yarn onto bobbins or cutting it into staple lengths: Grasps filaments as they are extruded into solidifying bath and brings ends together to form single strand. Passes strand over glass rollers that carry it through machine for subsequent processing. Ties strands together if breaks occur. May thread strands through washing, bleaching, and drying rollers and attach them to takeup bobbins [PROCESSOR (plastic-synth.)]. May gather filaments and throw them into glass funnel, mounted on machine, with quantity of acid that carries filaments into revolving $T3spinning box.$T1 May remove and replace bobbins as they become filled and reset clock device that controls speed of filament travel according to diameter of bobbin. When repositioning glass funnels after doffing, is known as Funnel Setter (plastic-synth.). May be designated according to type of spinning process as Spinner, Box (plastic-synth.); Spinner, Continuous (plastic-synth.).
GOE: 06.04.13 STRENGTH: L GED: R2 M1 L1 SVP: 3 DLU: 77

557.685-030 SPINNING-BATH PATROLLER (plastic-synth.)

    Tends equipment to regulate flow of chemical-bath solution to trough into which cellulose slurry is extruded, forming rayon filaments: Turns valves to transfer slurry from storage tanks to trough containing spinnerettes, maintaining constant level and flow according to gauge readings and plant specifications. May be designated Acid-Bath Tender (plastic-synth.) when performing duties in plants manufacturing rayon by viscose process.
GOE: 06.04.11 STRENGTH: L GED: R2 M1 L2 SVP: 4 DLU: 77

557.685-034 TAKE-UP OPERATOR (plastic-synth.)

    Tends machine that applies finish to and winds up newly extruded polyester fibers onto takeup bobbins: Turns valves on vacuum lines to activate aspirators that break and suck up yarn ends during doffing process. Grasps yarn lines at each bobbin position to gather and guide moving yarn to aspirator. Pushes filled bobbins of yarn away from bobbin drive rollers on takeup machine to stop spinning takeup bobbins. Lifts filled bobbins from machine and places bobbins on cart. Places empty bobbins on bobbin shafts of takeup machine. Pushes bobbin shafts with empty bobbins next to spinning drive rollers to power rotation of bobbins preparatory to takeup of yarn on bobbins. Pulls specified lines of yarn down from aspirator over rollers on takeup unit that guide and advance newly extruded yarn and throws yarn ends down against empty, spinning bobbins to takeup lines of bobbins. Separates yarn ends along specified guide notches of machine to facilitate takeup of yarn on separate bobbins. Aligns yarn taken up on bobbin, using wire brush.
GOE: 06.04.13 STRENGTH: M GED: R2 M1 L1 SVP: 3 DLU: 86

558 REACTING OCCUPATIONS, N.E.C.

    This group includes occupations, not elsewhere classified, concerned with producing a chemical change in components.

558.130-010 SUPERVISOR, PHOSPHATIC FERTILIZER (chemical)

    Supervises and coordinates activities of workers engaged in operation of automatic chemical process equipment to produce granular phosphatic fertilizers from raw chemicals, chemical products, and phosphate rock: Observes recording instruments, panel lights, and other indicators, and listens for warning signals to verify conformity of process conditions to plant standards. Reviews operating records and laboratory test reports to determine specific process conditions and to diagnose malfunctions in equipment. Confers with technical personnel to resolve conditions affecting safety, efficiency, and product quality. Directs workers to manually regulate process equipment or to shut down equipment during emergency situations, using telephone and radio communication systems. Trains workers in new job assignments. Performs other duties as described under SUPERVISOR (any industry) Master Title.
GOE: 06.01.01 STRENGTH: L GED: R4 M3 L3 SVP: 8 DLU: 77

558.132-010 SUPERVISOR, CHEMICAL (plastic-synth.)

    Supervises and coordinates activities of workers engaged in converting woodpulp into viscose for use in manufacturing cellophane and rayon: Orders rolls of pressed woodpulp transferred from storage to shredding room. Directs workers in moving controls to regulate caustic treatment of pulp to form alkali cellulose. Sets conveyor speed for specified aging of cellulose traveling through process chambers. Directs operation of equipment that mixes and blends cellulose with chemicals to form viscose. Directs workers in moving controls of valves and pumps to filter viscose and transfer viscose to storage. Trains workers in operation of equipment. Performs other duties as described under SUPERVISOR (any industry) Master Title.
GOE: 06.01.01 STRENGTH: L GED: R4 M3 L3 SVP: 7 DLU: 77

558.132-014 SUPERVISOR, PHOSPHORIC ACID (chemical)

    Supervises and coordinates activities of workers engaged in producing phosphoric acid by reaction of sulfuric acid with phosphate rock in continuous strong-acid process: Directs workers in changes in operating processes, work procedures, and production rates according to production instructions. Observes workers to ensure compliance with safety regulations. Prepares work orders for repair or maintenance of equipment. Trains new employees or assigns trainees to experienced workers to learn job duties. Performs other duties as described under SUPERVISOR (any industry) Master Title.
GOE: 06.04.01 STRENGTH: L GED: R4 M3 L4 SVP: 8 DLU: 77

558.132-018 SUPERVISOR, SULFURIC-ACID PLANT (chemical)

    Supervises and coordinates activities of workers engaged in producing sulfuric acid from liquid sulfur by catalytic conversion and absorption methods. Trains new employees in machine operation. Observes meters, charts, and gauges and reviews operating records to verify specified process conditions and to diagnose malfunctions in automatic operation. Performs other duties as described under SUPERVISOR (any industry) Master Title.
GOE: 06.01.01 STRENGTH: L GED: R4 M3 L4 SVP: 8 DLU: 77

558.134-010 SUPERVISOR, BRINE (chemical)

    Supervises and coordinates activities of workers engaged in preparing solutions for use in producing chlorine and caustic soda by electrolysis. Performs other duties as described under SUPERVISOR (any industry) Master Title.
GOE: 06.02.01 STRENGTH: M GED: R4 M3 L3 SVP: 7 DLU: 77

558.134-014 SUPERVISOR, CELL ROOM (chemical)

    Supervises and coordinates activities of workers engaged in producing chlorine, caustic soda, and caustic potash from brine by electrolysis. Performs other duties as described under SUPERVISOR (any industry) Master Title.
GOE: 06.02.01 STRENGTH: M GED: R4 M3 L3 SVP: 7 DLU: 77

558.134-018 SUPERVISOR, CELL-EFFICIENCY (chemical)

    Supervises and coordinates activities of workers engaged in maintenance of electrolytic cells and in drawing off hydrogen and chlorine generated by electrolysis. Performs other duties as described under SUPERVISOR (any industry) Master Title.
GOE: 06.02.01 STRENGTH: M GED: R4 M3 L4 SVP: 7 DLU: 77

558.134-022 SUPERVISOR, HYDROCHLORIC AREA (chemical) alternate titles: hydrochloric-manufacturing supervisor

    Supervises and coordinates activities of workers engaged in producing hydrogen chloride from decomposition of salt by sulfuric acid. Performs other duties as described under SUPERVISOR (any industry) Master Title.
GOE: 06.02.01 STRENGTH: M GED: R4 M3 L3 SVP: 7 DLU: 77

558.260-010 CHIEF OPERATOR (chemical)

    Controls chemical process equipment from instrumented control board or other control station: Monitors recording instruments, flowmeters, panel lights, and other indicators, and listens for warning signals to verify conformity of process conditions to plant standards of safety and efficiency. Moves control settings or notifies CHEMICAL OPERATOR (chemical) III 559.382-018 or other workers to make control adjustments on equipment units affecting speed of chemical reactions and quality and yield of product, using telephone or intercommunications system. Notifies maintenance, stationary-engineering, and other auxiliary personnel to correct equipment malfunctions and adjust power, steam, water, or air supply as indicated. Confers with technical and supervisory personnel to report or resolve conditions affecting safety, efficiency, and product quality. Interprets chemical reactions visible through sight glasses or on television monitor and reviews laboratory test reports to determine need for process adjustments. Inspects equipment for potential and actual hazards, wear, leaks, and other conditions requiring maintenance or shutdown. Records instrument readings, process conditions, and other operating data in shift log, calculating material requirements or product yield as necessary from standard formulas. Manually regulates or shuts down equipment during emergency situations, as directed by supervisory personnel. May be designated according to product produced as Chief Operator, Ammonium Sulfate (chemical); according to equipment used as Chief Operator, Reformer (chemical); or according to chemical process as Chief Operator, Purification And Reaction (chemical); Chief Operator, Synthesis (chemical).
GOE: 06.01.03 STRENGTH: L GED: R4 M3 L4 SVP: 7 DLU: 78

558.362-010 CATALYTIC-CONVERTER OPERATOR (chemical) alternate titles: catalytic-case operator

    Controls catalytic converters to alter chemical composition of liquid or gaseous substances, according to knowledge of process and sequence of operations: Turns valves and starts pumps to admit feed stock to converter units at specified rate, and to recycle unreacted products or byproducts to auxiliary equipment. Moves controls to regulate temperatures, pressures, and reaction time, according to gauge readings, chart recorders, and knowledge of processing requirements, to maintain efficient operation within specified limits. Operates or tends auxiliary equipment, such as heaters, scrubbers, vapor compressors, filters, distillation units, condensers, and humidifiers, to prepare or further process materials entering or leaving converters, according to plant operating procedures. Directs activities of CATALYTIC-CONVERTER-OPERATOR HELPER (chemical). Draws samples of materials for laboratory analysis, or tests materials for specified characteristics, using standard gas-analysis procedures and equipment. May introduce inert gas into converters to remove explosive vapors or purge catalyst. May replace catalyst or tend equipment that regenerates catalyst for reuse. May set semiautomatic control system that places equipment units in operating equilibrium, to attain specified products and transfer them for further processing. May be designated according to materials produced as Acetaldehyde-Converter Operator (chemical); Butadiene-Converter Operator (chemical); Ethylbenzene-Converter Operator (chemical); Ethylene-Plant Operator (chemical); or according to chemical reaction effected as Dehydrogenation-Converter Operator (chemical); Ethylbenzene Hydrogenator (chemical); Ethylbenzene Oxidizer (chemical).
GOE: 06.02.11 STRENGTH: L GED: R3 M2 L2 SVP: 7 DLU: 77

558.362-014 CD-REACTOR OPERATOR, HEAD (chemical)

    Controls catalytic reactor to convert monovinylacetylene into unpolymerized constituent of neoprene rubber, according to knowledge of process and sequence of operations: Opens valves to admit water and nitrogen to system, removing air to prevent fires or explosions. Admits specified chemicals to system and observes their color to detect presence of oxygen. Sets valves and controllers to maintain prescribed positive pressure in system. Turns valves to circulate hydrogen chloride solution through gas scrubbers and to pass vaporized monovinylacetylene through solution that removes impurities. Starts reaction system or directs CD-REACTOR OPERATOR (chemical) to start system. Adjusts valves, flowmeters, and automatic controllers to obtain specified equilibrium between gas feeds and to maintain pressures and temperatures within specified limits. Determines adjustments required to avert or correct emergency situations with minimum loss in time and yield. Starts condenser to remove unreacted monovinylacetylene from product. Inspects equipment and arranges for cleaning and repairs. Drains and steam-cleans processing equipment and lines during shutdowns, using steam generator and hose. Draws samples of products for laboratory analysis. Records operational data in log.
GOE: 06.02.11 STRENGTH: M GED: R3 M3 L3 SVP: 7 DLU: 77

558.362-018 SATURATOR OPERATOR (chemical; steel & rel.) alternate titles: ammonium-sulfate operator; sulfate operator

    Controls saturator tank and auxiliary equipment to precipitate ammonium sulfate by reaction of ammonia with sulfuric acid: Turns valves to admit sulfuric acid and liquid or gaseous ammonia to saturator until precipitation occurs, and to regulate saturation of solution, using titration test to determine acidity of bath. Observes temperature and pressure gauges to ascertain that process conditions meet plant standards, and turns valves to maintain operating equilibrium within specified range. Notifies supervisor or starts pumps to discharge precipitate onto drain table to settle out crystals, and pumps strained liquor back to bath. Records gauge readings for operating log. May move controls to reheat gas prior to saturation. May tend centrifuge to dry ammonium sulfate. May take samples of product and constituents for laboratory analysis.
GOE: 06.02.11 STRENGTH: L GED: R3 M2 L2 SVP: 5 DLU: 77

558.382-010 ACID EXTRACTOR (steel & rel.)

    Controls equipment, such as washers, rectifiers, acid pots, and mixing tanks arranged in series to recover tar acids from coal-tar oils: Starts pumps to circulate oil through equipment, and opens valves at various stages to treat oil with chemicals, carbon dioxide, and steam, according to specified instrument readings. Performs routine tests at different processing stages to determine effectiveness of treatment. Samples products for laboratory analysis, and interprets results of analyses to make adjustments in processing operations and to control quality and quantity of production. Inspects equipment for operating efficiency, lubricates equipment, and makes minor repairs and adjustments.
GOE: 06.02.11 STRENGTH: L GED: R3 M2 L3 SVP: 5 DLU: 77

558.382-014 BURNER OPERATOR (chemical) alternate titles: ammonia operator

    Controls converter and auxiliary equipment that combine hydrogen and nitrogen to produce anhydrous ammonia: Lights burner and starts pumps, compressors, scrubbers, and absorption units. Moves controls on panelboard to regulate temperatures of solutions and opens valves to admit heated and purified air and hydrogen into combustion chamber of burner, where nitrogen driven from air combines with hydrogen to form ammonia. Reads instruments, such as thermometers, pressure gauges, and potentiometers. Makes control adjustments according to operating instructions and charts. Pumps fresh solutions into scrubbing and $T3absorption towers$T1 when readings indicate excessive alkalinity. Records operational data in logbook. May compute percentage of hydrogen and ammonia in burner gases, using standard test procedure.
GOE: 06.02.11 STRENGTH: M GED: R3 M3 L3 SVP: 5 DLU: 77

558.382-018 CAUSTICISER (paper & pulp) alternate titles: caustic-liquor maker

    Controls equipment to process green liquor (soda ash solution) and lime into caustic liquor used in cooking woodpulp: Starts pumps and adjusts valves to control flow of water and lime into tank or revolving drum and over screens to remove lumps to make lime slurry of specified density. Adjusts valves to control flow of lime slurry and green liquor into reaction tanks in specified proportions and opens steam valve to heat reaction tank to specified temperature to make caustic cooking liquor. Adjusts controls to pump cooking liquor to settling tank and makes titration tests to determine extent of settling of lime sludge. Turns valves to pump clear liquor to storage tank and lime sludge to sludge tank. May test green liquor and calculate quantity of lime slurry additive. May make titration test to determine concentration of cooking liquor.
GOE: 06.02.11 STRENGTH: L GED: R3 M2 L1 SVP: 4 DLU: 77

558.382-022 CAUSTICISER (chemical) alternate titles: reactor operator

    Operates equipment to control chemical reaction of soda ash and milk of lime to make caustic soda: Opens valves and starts pumps to fill dissolving tank with specified amounts of soda ash and milk of lime. Starts mixer in tank to agitate materials and dissolve solids. Draws sample of mixture from tank and measures its gravity with hydrometer. Opens water valve to dilute mixture and obtain specified concentrations according to type of product. Turns valves and rheostats to adjust feeding of solution to reactor tank. Periodically takes samples of reacting liquor and titrates samples with normal acid to determine concentration of caustic soda being formed. Conducts similar tests and titrations to determine salt content and concentration of various liquors. Clears stopped pipelines and repairs equipment, using handtools.
GOE: 06.02.11 STRENGTH: M GED: R3 M2 L2 SVP: 5 DLU: 77

558.382-026 CELL TENDER (chemical) alternate titles: cell attendant; unit tender

    Controls electrolytic cells to produce caustic soda, chlorine, or hydrogen to specified standards from brine (sodium chloride) solution: Regulates brine flow to cells, according to power input and strength of electrolyte. Observes flow through sight glasses; reads gauges, chart recorders, and manometer; and moves controls to regulate level of cell liquor, brine flow, cell pressure, current, and temperatures, within efficient operating limits. Turns valves and starts pumps to maintain specified back pressure on hydrogen and vacuum on chlorine. Observes gauges, turns valves, and starts pumps to tend auxiliary equipment, such as hydrogen scrubbers, water sprayers, condensers, and driers to purify, recover, or further process hydrogen, chlorine, and caustic liquor. Inspects cells, contact bars, pumps, turbines, and hydrogen and caustic outlets to detect overheating, stoppages, and leaks. Opens valves to flush lines and to draw sample of cell liquor. Measures specific gravity of liquor to facilitate process controls using hydrometer. Records data, such as temperatures, flow rate, operating time, and repairs made or needed. May replace glass and rubber tubing, nipples, and assemblies, and clean cell orifices and vents. When operating auxiliary equipment only to recover chlorine or hydrogen gas, may be designated Chlorine-Cell Tender (chemical); Hydrogen-Cell Tender (chemical).
GOE: 06.02.11 STRENGTH: L GED: R3 M2 L3 SVP: 5 DLU: 77

558.382-030 CHLORINATOR OPERATOR (chemical)

    Controls equipment in which chemicals or other materials are chlorinated by reaction with chlorine gas: Pumps specified amounts of chemicals to chlorinator. Reads flowmeter and opens valves to regulate flow of chlorine and rate of chlorination reaction. Reads temperature gauges and turns steam and coolant valves to maintain reaction within specified temperature range. Tests sample of product for specific gravity and for boiling or freezing point, using hydrometer and thermometer. Observes color of product to determine when chlorination is completed. Records operating data, such as temperature and pressure in chlorinator and related equipment. May operate auxiliary units, such as vaporizer, filters, stills, and stripping columns. May be designated according to product formed as Bleach Chlorinator (chemical); Sulfur-Chloride Operator (chemical).
GOE: 06.02.11 STRENGTH: L GED: R3 M2 L2 SVP: 5 DLU: 77

558.382-034 CUPROUS-CHLORIDE OPERATOR (chemical) alternate titles: catalyst-manufacturing operator

    Controls equipment to produce cuprous chloride, used as catalytic agent in chemical processes: Weighs or measures specified amounts of cuprous powder and other ingredients, and dumps materials into tank. Starts tank agitator and moves controls to heat and agitate ingredients to effect prescribed reaction, and to transfer product to auxiliary equipment for further processing. Tests filtrate for impurities, using standard chemical test equipment and procedure, and draws samples of chloride for laboratory analysis. Operates hydrogen-chloride coolers, condensers, and absorbers [ABSORPTION OPERATOR (chemical)] to produce and supply hydrochloric acid to reactor units, using hydrometer to verify that specific gravity is maintained within prescribed limits. Compiles inventory reports of materials used and consumed. May shovel chloride from filter tank into containers for storage or transfer to other processing areas.
GOE: 06.02.11 STRENGTH: M GED: R3 M2 L2 SVP: 4 DLU: 77

558.382-038 KETTLE OPERATOR I (chemical)

    Controls heated reaction kettles to process liquid and solid materials into specified chemical products: Turns valves or starts automatic metering pumps that admit specified quantity of liquid materials into kettle. Weighs and dumps or scoops prescribed solid, granular, or powdered ingredients into kettle, according to production sheet. Starts agitator to mix materials for specified time or stirs mixture with paddle. Observes gauges and recording instruments, and adjusts valves and controls to maintain temperature, vacuum pressure, and speed of reaction in kettle within prescribed limits. Draws sample of product for laboratory analysis. May test product for specified characteristics, such as acidity and composition, using standard litmus paper test and pH meter. May observe reaction through porthole in equipment and adjust controls to regulate speed or degree of reaction, according to knowledge of process. May tend auxiliary equipment, such as quench tanks and filter presses, to process resulting product or ingredients used to sustain reaction. May be designated by degree of pressure maintained in kettle as High-Pressure-Kettle Operator (chemical); Low-Pressure-Kettle Operator (chemical).
GOE: 06.02.11 STRENGTH: M GED: R3 M2 L2 SVP: 5 DLU: 77

558.382-042 KETTLE OPERATOR (plastic-synth.) alternate titles: reactor-kettle operator

    Controls automatic or semiautomatic equipment to polymerize solutions in reaction kettles to produce synthetic-rubber polymers, such as silicone or neoprene, following written specifications: Weighs solid or liquid chemical additives, using balance or floor scale. Dumps ingredients into kettle, using overhead hoist. Turns valves to load kettles with monomer, catalyst, and modifier solutions. Starts agitator and turns steam or water valves to activate and control polymerization. Observes and records dial and gauge readings, and draws and tests samples to determine degree of completion of polymerization. Turns valves to release vacuum and to cool batch to terminate polymerization. Starts pumps to transfer nonreacted materials to rerun tank. Flushes kettle with water and changes filter socks, or cleans kettle, using brushes and cleaning solvents. May remove reactor cover and manually dump catalyst in reactor.
GOE: 06.02.13 STRENGTH: L GED: R3 M2 L2 SVP: 5 DLU: 77

558.382-046 NITRATOR OPERATOR (chemical)

    Controls equipment to combine and process acids and specified chemical ingredients to produce explosives, such as nitroglycerin, tetryl, or TNT: Admits specified ingredients, such as mixed acids and toluene compounds, to metering or weighing tanks, and regulates feed to nitrator in specified timing and sequence. Starts agitator to mix ingredients for prescribed time or until settling occurs. Observes temperature and pressure gauges and turns steam and coolant valves to regulate reaction within specified limits to prevent explosion. Transfers batch or specified components to storage tanks or other processing equipment after prescribed time or when visual inspection indicates reaction is completed. Records gauge readings, nitration time, and ingredients consumed in shift log. May be designated according to explosive produced as Nitroglycerin-Nitrator Operator, Batch (chemical); Tetryl-Nitrator Operator (chemical); or according to intermediate materials nitrated as Binitrotoluene Operator (chemical); Mononitrotoluene Operator (chemical). May control continuous-process equipment and be designated Biazzi-Nitrator Operator (chemical).
GOE: 06.02.11 STRENGTH: L GED: R3 M2 L2 SVP: 6 DLU: 77

558.382-050 POLYMERIZATION-KETTLE OPERATOR (plastic-synth.) alternate titles: kettle operator; resin maker; syrup-kettle operator; synthetic-resin operator

    Controls reactor vessels to polymerize raw resin materials to form phenolic, acrylic, or polyester resins: Pumps specified amount of raw material into calibrated tank according to formula and transfers materials into reactor. Starts mixers and pumps reagents and catalysts into reactor. Starts circulation and vacuum pumps. Adjusts valves to regulate flow of preheated or cooled fluid around jacket of reactor and to start and regulate polymerization reaction. Adjusts valves to regulate pressure and temperature in reactor. Tests viscosity and pH of resins to determine length of polymerization time, using pH meters and viscosimeters. Turns valves to discharge processed materials from kettles into cooling pans. Records processing time, pressure, temperature, and test results in log; and writes daily reports on amounts of raw materials used and finished product barreled or stored. May dump compounds into polymerized resins to thicken product. May pump polymerized resin from storage tanks to tank trucks or cars for shipment. May cast liquid plastics in molds. May analyze sample of plastics materials to determine clarity, acidity, fusibility, or brittleness, using slide rule, torsion balance, and other testing equipment.
GOE: 06.02.13 STRENGTH: M GED: R4 M3 L3 SVP: 7 DLU: 77

558.382-054 SODA-COLUMN OPERATOR (chemical)

    Controls carbonating tower to precipitate sodium bicarbonate crystals from ammoniated brine in Solvay process production of soda ash: Observes temperature, pressure, and flowmeter gauges and adjusts valves and controls to admit ammonia and brine to converter and to regulate process conditions, according to plant procedure. Tests concentration of product, using standard test equipment and procedure, and adjusts temperature in tower to produce sodium bicarbonate crystals of specified size and concentration for efficient filtering, washing, and drying of product, to form soda ash. Flushes feedlines, using steam hose; and replaces gaskets, using handtools. May tend stills and related equipment to produce ammonia for absorption into brine.
GOE: 06.02.11 STRENGTH: L GED: R3 M2 L2 SVP: 4 DLU: 77

558.382-058 WET-MIX OPERATOR (chemical)

    Controls premixer and reaction vessels to produce orthophosphate liquor by reaction of phosphoric acid with soda ash: Sets timing device on weigh tank to effect prescribed feed rate of soda ash to premixer. Starts premixer, pumps, exhaust fans, screw conveyors, and bucket elevator in required sequence. Observes flowmeters and turns valves to regulate flow of phosphoric acid and water to premixer as specified. Swings discharge spout over reaction vessel, and starts agitator in vessel to admit and mix product. Turns valve to regulate flow of steam through vessel heating coils to attain reaction, observing thermometer to verify required temperature. Lowers dipstick into tank to obtain sample for laboratory testing. Turns valves to add measured amounts of chemicals, as indicated by laboratory reports, to regulate chemical properties of mixture to specifications. Turns valves and starts pump to transfer finished mixture to spray drier feed tanks.
GOE: 06.02.11 STRENGTH: L GED: R3 M2 L2 SVP: 4 DLU: 77

558.385-010 CD-REACTOR OPERATOR (chemical)

    Tends catalytic reactor that converts monovinylacetylene into unpolymerized constituent of neoprene rubber as directed by CD-REACTOR OPERATOR, HEAD (chemical): Moves equipment controls to start and shut down reactor components in sequence as directed. Gauges catalyst level in reactors and patrols area to record instrument readings in operating log. Collects and titrates samples of catalyst to facilitate process adjustments and production of product meeting specified standards. Starts pumps to discharge and recharge catalyst in reactors and calcium chloride in driers and scrubber towers. Drains and flushes process lines and equipment, using water, steam hoses, and nitrogen-sweeping equipment. Inventories supplies received and consumed.
GOE: 06.02.11 STRENGTH: M GED: R3 M2 L2 SVP: 4 DLU: 77

558.385-014 TOWER HELPER (chemical)

    Tends equipment units that generate hydrogen chloride to facilitate process control by ABSORPTION OPERATOR (chemical): Installs chlorine cylinders in chlorinating unit. Starts equipment and pumps to mix metered amount of chlorine with hydrochloric acid from absorption system and to transfer chlorinated acid to feed tanks of stripper still. Draws samples of product for laboratory analysis, or tests sample for specific gravity, acidity, and composition to maintain product specifications, using such instruments as hydrometer and pH meter. Maintains records of tank levels, gauge and instrument readings, and inventory of materials used and produced.
GOE: 06.04.11 STRENGTH: M GED: R3 M2 L2 SVP: 3 DLU: 77

558.482-010 FURNACE OPERATOR (chemical)

    Controls continuous-process furnace and related equipment to decompose salt cake, forming hydrogen chloride: Starts salt conveyors or shovels salt cake into furnace; turns valves to fill furnace reaction pot with sulfuric acid from supply tank; and sets burners, dampers, and vents to fire furnace to specified temperature and effect liberation of hydrogen chloride. Computes salt and acid requirements, using instrument readings and formulas, and sets feed scales and timers for continuous operation or manually regulates feed and temperature controls to maintain production in conformity with plant standards. Removes scale from furnace walls and agitates salt cake to maintain efficient production, using scrapers and rake. Starts or regulates speed of salt-removal device to prepare furnace for new charge. Maintains log of shift production, gauge readings, and equipment failures.
GOE: 06.02.11 STRENGTH: M GED: R3 M3 L2 SVP: 4 DLU: 77

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