Job Description:

• 1) Tends vats in which fats or vegetable and animal oils are processed into glycerin and fatty acid: Pumps specified amount of fat or oil into vat and admits prescribed quantity of sulfuric acid from storage tank.

• 2) Observes gauges and thermometer and turns steam valves to boil contents of vat.

• 3) Pumps oil or fat to second vat and adds specified amount of distilled water and Twitchell's reagent.

• 4) Starts agitator in vat and turns steam valves to boil mixture for prescribed time.

• 5) Observes mixture through sight glass in pump line and turns valves to transfer fractions of product having different color and density to respective storage tanks.

• 6) Records shift production, materials used, and heating and agitating time.