A professional who tends gas scrubbing and related equipment that removes impurities from gases, as directed by purification operator II. Respnsibilities include:

• Loads brine saturators and nitrogen-drying columns with lump calcium chloride.
• Mixes hydrosulfate solutions used in process, according to proportion chart or oral directions.
• Observes gauges to determine gas pressures throughout system, computes and records drops in pressure, and ascertains from data obtained optimum time to shut down and clean equipment for efficient operation.
• Draws samples of acids, brine, and gases from equipment units for laboratory analysis and determines specific gravity of brine, using hydrometer.
• Drains liquid from nitrogen driers.
• Assists operator in maintaining operating log of gauge and instrument readings.