Essential Functions : Operates and maintains stationary engines and mechanical equipment, such as steam engines, air compressors, generators, motors, turbines, chillers, cooling towers, and steam boilers, to provide utilities, such as light, heat, or power, for buildings and industrial processes. Specialize in equipment designed for industrial processes and be designated Acid-Concentration-Plant-Equipment Engineer; Air-Compressor-Station Engineer; Diesel-Engine Operator, Stationary; Water-Pumping-Station Engineer.