A professional who cleans storage tanks and glass-lined, high-pressure reaction vessels used in production of copolymer synthetic rubber. Respnsibilities include:

• Turns vacuum system valves to remove vapors from vessels, and locks electrically driven agitator in position.
• Steams and ventilates vessels, using steam and airhoses.
• Removes solidified resin from vessel and cleans inner surfaces and equipment, using sparkproof safety tools, cleaning compounds, and waterhose.
• May test fumes with explosion meter to determine presence of explosive mixture of gases.