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TITLE(s): DEWATERER OPERATOR (smelt. & refin.) alternate titles: kiln-head house operator Tends dewatering machines that filter moist solid aluminum hydroxide from coarse slurry: Turns valves to regulate flow of slurry and wash water to dewaterers and to admit solids to kilns, according to temperature readings, alumina-quality reports, and discharge rates given by KILN OPERATOR (smelt. & refin.). Adjusts valves to maintain supply of water for vacuum pumps, wash water, and water-cooled bearings. Regulates valves in cooperation with other operators to obtain balancing levels in filtrate tanks, hydrate storage tanks, and hydrate storage overflow tanks. Lubricates valves and adjusts packing glands to prevent leaks. Changes automatic recording charts in machines. Records tank levels and density readings of hydrate in log. May tend dust-recovery system. GOE: 06.04.10 STRENGTH: M GED: R3 M1 L2 SVP: 5 DLU: 77 ONET CROSSWALK: 92962 Separating, Filtering, Clarifying, Precipitating, and Still Machine Operators and Tenders | |||||||||||||||||||||||||||||||||||
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