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TITLE(s): WASH OPERATOR (chemical) Controls system of tanks to wash and reduce acidity of activated carbon sludge, preparatory to drying, for variety of industrial and consumer applications: Turns valves to regulate flow of acid, carbon sludge, and water through thickener and agitator tanks according to tank-level and specific gravity readings supplied by WASH HELPER (chemical). Draws sample of product in beaker and tests for acidity, using pH meter and standard titration test. Compares level of solution in graduated suction tube with conversion chart to determine acidity of sludge. Turns valve to admit caustic solution to neutralizer tank until acidity level meets prescribed standard. Patrols work area to observe level of carbon in thickener tank and wash solutions in overflow troughs to prevent spills, regulating pump speeds as necessary. Gauges tank levels, using calibrated rod. Keeps records of tank levels and test results for shift log. GOE: 06.02.18 STRENGTH: L GED: R3 M3 L2 SVP: 5 DLU: 77 ONET CROSSWALK: 95008 Chemical Plant and System Operators | |||||||||||||||||||||||||||||||||||
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