A refinery is an industrial processing plant used to convert crude oil into a variety of useful petroleum products. This complex environment needs skilled and educated personnel to ensure processes run smoothly, efficiently, and safely. After undergoing a rigorous qualification, refiners operators are relied on to display competency in keeping the refinery operating at peak performance. The Operator Qualifications in Refining training course identifies and discusses the role refinery operators, their numerous responsibilities, and the qualifications necessary to become and remain a refinery operator. This course is part of the Petroleum Refining training series.