CODE: 529.685-198Buy the DOT:Download/CD-ROM
TITLE(s): REFINING-MACHINE OPERATOR (oils & grease)

Tends machine that refines crude oils, such as soybean, cottonseed, and peanut: Turns valve to pump oil and caustic solution from storage tanks into machine tanks as specified. Starts machine to separate caustic from oil by centrifugal force. Sets thermostat, observes gauges, and regulates valves to maintain prescribed temperature in wash and dryer tanks. Turns valves to pump mixtures to wash and dryer tank to remove byproducts with water, and impurities with heat. Turns valve to pump refined oil to storage tanks. Cleans bowls, using water and steam. May test samples of crude and refined oil to determine specific gravity and free fatty acid content, using hydrometer and refractometer. May be designated according to type of machine tended as Sharples-Machine Operator (oils & grease).
GOE: 06.04.15 STRENGTH: L GED: R3 M2 L2 SVP: 3 DLU: 77
ONET CROSSWALK: 92962 Separating, Filtering, Clarifying, Precipitating, and Still Machine Operators and Tenders