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 […]
ACID-POLYMERIZATION OPERATOR Read More »
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
Job Description: 1) Supervises and coordinates activities of workers engaged in operation of equipment to process, store, and mix acids for use in making explosives, such as nitroglycerin, TNT, and dynamite: Trains workers in operation of equipment. 2) Inspects equipment and observes workers to ensure safe work practices. 3) May supervise production of ammonium nitrate
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
Job Description: 1) Controls rotary or spray sulfur furnaces and alkali absorption towers to make cooking acid for use in digesting woodpulp: Moves controls and observes gauges to regulate combustion chamber, speed of furnace rotation, and volume of liquid sulfur in furnace to maintain specified temperature and acidity required to produce sulfur dioxide gas. 2)
Job Description: 1) Fills storage battery cells with sulfuric acid solutions of specified concentration preparatory to forming and charging: Arranges batteries in groups on tables or trucks according to specified acid concentration. 2) Holds spouts of hoses on gravity flow or siphon-type fillers over battery vents. 3) Adjusts valves manually or pushes pedal to control
Job Description: 1) 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. 2) Performs routine tests
Job Description: 1) Starts conveyors and pushes incoming storage batteries onto conveyor leading to machine which inverts batteries over receiving tank to drain used forming acid or manually unloads batteries from forming trucks, inverts batteries, and places batteries on rack to drain. 2) Places drained batteries on conveyor leading to refilling station or on truck.
Job Description: 1) Adjusts specific gravity of electrolyte in battery cells or in plate-forming tanks to concentration specified: Ascertains temperature and specific gravity of solutions, using thermometer and hydrometer. 2) Turns valves or lever to drain acid or water into cells or tanks to adjust specific gravity of solutions. 3) Connects batteries to charging line
Job Description: 1) Tends generating equipment that processes calcium-carbide crystals and water into acetylene gas: Turns valves, level gauge, and thermostat to raise and heat water to prescribed level and temperature in generator. 2) Dumps specified quantity of calcium-carbide crystals into hopper, bolts in cover, and starts generator. 3) Opens hopper gate and starts vibrator
ACETYLENE-PLANT OPERATOR Read More »