A professional who controls gas-scrubbing and related equipment to remove impurities from gases. Respnsibilities include:

• Observes temperature, flow, pressure gauges, and liquid-level indicators and moves controls to effect operating equilibrium in equipment, according to plant procedure and correlation of instrument readings.
• Observes gas-scrubbing fluid through sight glasses to determine process efficiency, indicated by color and flow rate of fluid.
• Turns valves to maintain brine in brine scrubber at specified strength and regulate temperature of hot water in scrubber jacket, according to indicated efficiency of scrubbing fluid.
• Inspects pumps, motors, valves, and related equipment and replaces packing in column scrubbers and nitrogen-drying columns at specified intervals with acid, calcium chloride, or brine.
• Draws samples of gases and fluids for laboratory analysis.
• Maintains log of gauge readings and results of laboratory analyses.
• Directs activities of purification-operator helper.