Operations

AIR-CONDITIONING INSTALLER-SERVICER HELPER, WINDOW UNIT

Job Description: 1) Assists AIR-CONDITIONING INSTALLER-SERVICER, WINDOW UNIT in repairing, servicing, or installing window-mounted air-conditioning units, performing any combination of following duties: Carries unit from delivery vehicle to work site. 2) Assembles window-support brackets, using handtools. 3) Cuts opening through wall for insertion of unit, using hammer and chisel. 4) Applies caulking compound to excess

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AIR-COMPRESSOR OPERATOR

Job Description: 1) Tends air compressors driven by steam, electric, or gasoline powered units, to generate and supply compressed air for operation of pneumatic tools, hoists, and air lances: Starts power unit to build up specified pressure in compressor. 2) Adjusts controls or sets automatic controls to maintain continuous air supply to pneumatic tools or

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AERIAL-TRAM OPERATOR

Job Description: 1) Tends aerial tramway to convey refuse, coal, ore, and other materials from plant or mine to spoil pile, conveyor, railroad car, boat, or plant: Pushes buttons to start reel and winding cable, causing tram buckets to move between loading and dumping areas. 2) Pulls levers to position buckets for loading and pushes

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ADHESIVE-BANDAGE-MACHINE OPERATOR

Job Description: 1) Tends machine that automatically makes adhesive bandages from cloth and plastic material: Positions specified rolls of materials on machine spindles and locks them in place with plates and setscrews to prevent unrolling. 2) Threads materials through rollers in prescribed sequence. 3) Starts machine that cuts materials to required length, affixes gauze to

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ADDRESSING-MACHINE OPERATOR

Job Description: 1) Operates machine to print addresses, code numbers, and similar information on items, such as envelopes, accounting forms, packages, and advertising literature: Positions plates, stencils, or tapes in machine magazine and places articles to be addressed into loading rack. 2) Starts machine that automatically feeds plates, stencils, or tapes through mechanism. 3) Adjusts

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ACID-TANK LINER

Job Description: 1) Assembles and installs acid-proof brick lining in metal tanks used for processing and storing of acid: Cleans inside of tank to remove foreign matter, such as rust, scale, and grease, using sandblasting equipment. 2) Removes dust from tank lining, using gasoline dampened cloth. 3) Applies specified coats of primer cement to lining

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ACID-POLYMERIZATION OPERATOR

Job Description: 1) Tends batch still and polymerization vessel to distill and polymerize acrylic acid used in production of plastics: Tends laboratory-type batch still to vaporize and condense acrylic acid. 2) Measures amount of distillate, using burette or gauging rod, and pours distilled acid into water-jacketed polymerization vessel. 3) Heats vessel to prescribed temperature, and

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ACID-PLANT HELPER

Job Description: 1) Tends furnace, absorber, cooler, scrubber, and auxiliary equipment used in producing phosphoric acid by oxidation and hydration of elemental phosphorus: Patrols work area; observes water levels in scrubber, venturi-duct pan, and cooling-tower basin; and reads flowmeter and pressure gauges on phosphorus pump, fans, and blower to verify process conditions. 2) Records or

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ACID PURIFIER

Job Description: 1) Tends equipment that filters acid liquor from slurry and dehydrates residual materials for further processing: Opens feed valves and starts rotary drum that filters liquor from slurry. 2) Turns valves to transfer residue to dehydration unit. 3) Adjusts controls to regulate temperature, pressure, and speed of material flow as specified to dry

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