Perform routine predictable and recurring plant operations, such as: inspecting, monitoring, and adjusting equipment and systems to achieve optimal and economic performance; the start-up, operation, shut down of equipment and systems; record keeping and reports; operations maintenance and minor repairs; reviewing and evaluating plant records to determine trends; and to detect problems and opportunities for improvements. Essential and marginal functions may require maintaining physical condition necessary for sitting, walking, or standing, lifting, pushing, pulling, twisting, throwing, reaching, squatting, stretching, bending for prolonged periods of time; at times lift and carry as much at 50 lbs.