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DOT Code: 551.485-010

Industry: 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