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       CODE: 549.362-014 Buy the DOT:Download/CD-ROM
TITLE(s): TREATER (petrol. refin.) alternate titles: treating-plant operator
Controls continuous-treating or batch-treating equipment to process petroleum products, such as
gasoline, kerosene, and lubricating oils, with chemicals, solvents, steam, clay, and hydrogen to
remove impurities and to improve color, odor, and stability, according to specifications: Moves and
sets levers, switches, dials, and handwheels to admit products and treating agents to processing
units in specified ratio; to direct flow of products through treating stages, such as mixing,
precipitating, and neutralizing; and to regulate temperatures, pressures, and circulation rates of
treating equipment. Observes temperature gauges, pressure gauges, and flowmeters; records readings;
and compiles operating records. Patrols unit to detect malfunctions and leaks. Opens bleeder valves
to sample products and tests them for chemical characteristics, specific gravity, and color, or
sends sample to laboratory for analysis. Reprocesses products or pumps them to storage tanks,
according to test results and laboratory recommendations. Opens valves to drain sludge from units.
May repair and lubricate equipment. May treat products, using hydrogen-catalytic process. May
operate refrigerating equipment [REFRIGERATING ENGINEER (any industry)]. May add dyes or fortifying
chemicals to product [BLENDER (petrol. refin.)]. May be designated according to product treated as
Crude-Oil Treater (petrol. refin.); Wax Treater (petrol. refin.); treating agent used as Acid
Treater (petrol. refin.); Hydrogen Treater (petrol. refin.); plant operated as Clay-Plant Treater
(petrol. refin.); Naphtha-Plant Treater (petrol. refin.); Solvent-Plant Treater (petrol. refin.); or
type of operation as Batch-Unit Treater (petrol. refin.).
GOE: 06.02.12 STRENGTH: L GED: R4 M3 L3 SVP: 7 DLU: 77
ONET CROSSWALK: 92935 Chemical Equipment Controllers and Operators
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