Operate or tend equipment to control chemical changes or reactions in the processing of industrial or consumer products. Equipment used includes devulcanizers, steam-jacketed kettles, and reactor vessels. Exclude Chemical Plant and System Operators (51-8091).

Tests metallurgical and chemical properties on radioactive materials, operating remote-controlled equipment in hot cell. Controls slave manipulators from outside cell to remove metal or chemical materials from shielded containers inside hot cell and places on bench or equipment workstation.

Tests chemical... [+] More

Tests metallurgical and chemical properties on radioactive materials, operating remote-controlled equipment in hot cell. Controls slave manipulators from outside cell to remove metal or chemical materials from shielded containers inside hot cell and places on bench or equipment workstation.

Tests chemical or metallurgical properties of materials according to standardized procedures, and observes reaction through cell window. Prepares and operates machines to cut, lap, and polish test pieces, following blueprints, x-ray negatives, and sketches. Tests physical properties, using equipment, such as tensile tester, hardness tester, metallographic unit, micrometer, and gauges. Immerses test sample in chemical compound to prepare for testing. Places irradiated nuclear fuel materials in environmental chamber to test reaction to temperature changes. Records results of tests for further analysis by engineers, scientists, or customers. Places specimen in shielded container for removal from cell, using manipulators. Participates in cleaning and decontamination of cell during maintenance shutdown. May devise adapters and fixtures for use in hot cell operations. [-] Less

Tends equipment that separates zinc chloride from slag

breaks up slag, using sledgehammer. Loads slag into water-filled tank, using hoist. Agitates solution to dissolve zinc chloride from slag, using airhose. Determines specific gravity and acidity of solution, using hydrometer and chemical... [+] More

Tends equipment that separates zinc chloride from slag

breaks up slag, using sledgehammer. Loads slag into water-filled tank, using hoist. Agitates solution to dissolve zinc chloride from slag, using airhose. Determines specific gravity and acidity of solution, using hydrometer and chemical reagents. Pumps impurities from solution through filters. Samples solution and observes its color to determine need for additional reagents and agitation. Pumps treated solution to tank cars or drums. Cleans sediment from equipment, using shovel and water hose, and replaces filter cloths. [-] Less

Tends machine that coats wire electrolytically with zinc to protect wire surface from corrosion

mixes zinc solution according to specified formula and turns valves to fill tank with solution. Threads wire through machine and sets rheostat to regulate flow of current... [+] More

Tends machine that coats wire electrolytically with zinc to protect wire surface from corrosion

mixes zinc solution according to specified formula and turns valves to fill tank with solution. Threads wire through machine and sets rheostat to regulate flow of current through solution. Starts machine to pull wire through solution. Examines surface of wire for defects, such as bubbles or bare spots, and measures thickness of coating, using micrometer. Adjusts controls to regulate speed of reel and flow of current to coat wire to specified thickness. [-] Less

Performs any combination of following duties to assemble batteries for commercial use in products, such as photographic equipment, flashlights, and pagers

fills electrolyte or mercury dispensing devices to specified levels. Pours partial battery assembly parts into respective conveyor line bowl feeders,... [+] More

Performs any combination of following duties to assemble batteries for commercial use in products, such as photographic equipment, flashlights, and pagers

fills electrolyte or mercury dispensing devices to specified levels. Pours partial battery assembly parts into respective conveyor line bowl feeders, places spools of metal strips and paper on holding brackets, or positions battery subassemblies in conveyor holding attachments. Observes automatic equipment that cuts blotter and cathode inserts, places inserts in subassembly, joins top and bottom subassembly of batteries, dispenses specified amounts of electrolyte or mercury, and spot welds metal strip to each battery; or tamps pellets into bottom sections of battery subassembly. Positions inserts, such as poly ring and anode ring, in subassembly before or after designated steps of assembly process. Notifies supervisor or setup personnel, or signals coworkers, to stop conveyor when malfunctions occur. Gathers batteries with metal strips attached, and places specified number of batteries in concave work aid that facilitates positioning metal strips over side of batteries in stack prior to spot welding. Positions each battery of stack under spot welder and depresses pedal to spot weld strips to successive batteries to join stacks of batteries. Spot welds battery top to joined batteries. Inserts battery stacks into battery sleeves with crimped tops, positions battery sleeves in crimping machine, and presses button to crimp bottom of sleeves to secure stacks in sleeves. [-] Less