A professional who controls heated pots to dehydrate concentrated caustic solution, according to operating procedures. Respnsibilities include:

• Starts pumps and opens valves to admit specified quantity of caustic solution to pots.
• Reads pressure and flowmeters and charts, and turns valves to control flow of caustic liquor to prevent overflow in pots.
• Observes boiling rate and temperature recorders and turns valves or sets thermostat to maintain pot temperature within specified limits.
• Records flow, pressure, and temperature readings in operating log.
• May perform chemical tests on caustic and add reagents to facilitate production of standard product.
• May tend machine that flakes caustic soda.
• May fire oil or gas furnaces under direction of stationary engineer.