A professional who supervises and coordinates activities of workers engaged in treating petroleum products with chemicals, steam, water, or air to remove sulfur and other impurities, in blending products to specification, and in pumping products to storage tanks, loading racks, and other processing units. Respnsibilities include:

• Inspects treating and pumping units to verify specified temperatures and pressures.
• Reads logsheets, gauging records, and laboratory test reports to verify conformity of product to production schedules and specifications.
• Trains new workers.
• Performs other duties as described under supervisor master title.