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       CODE: 558.582-010 Buy the DOT:Download/CD-ROM
TITLE(s): PHOSPHORIC-ACID OPERATOR (chemical)
Operates agitators (reaction vessels), vacuum-filtrate system, and allied equipment from
instrumented control board to produce phosphoric acid by reaction of sulfuric acid with phosphate
rock in continuous strong-acid process: Monitors recording instruments, flowmeters, panel lights,
and other indicators, and listens for warning signals to verify conformity of process conditions to
plant standards. Starts automatic feed of phosphate rock, water, and sulfuric acid through reaction
tanks, vacuum-filtrate system, and pumps. Turns knobs and screws on control board to regulate
temperatures, weight, pressures, and flow of materials through system to effect prescribed reaction,
according to knowledge of equipment and process. Draws samples of product at specified stages of
process for laboratory analysis. Maintains log of gauge readings, shift production, and equipment
malfunctions. Patrols area to inspect equipment for leaks and hazards, such as wear and pending
malfunction.
GOE: 06.02.11 STRENGTH: L GED: R4 M3 L3 SVP: 7 DLU: 77
ONET CROSSWALK: 92935 Chemical Equipment Controllers and Operators
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