Under general supervision, performs duties in connection with the maintenance, repair, and installation and removal of station and yard mechanical equipment and structures, including inspection, testing, monitoring, maintenance, repair, non-code welding, cutting, brazing, adjustment, and alignment of station and yard mechanical equipment such as piping, valves, boilers, boiler auxiliaries, turbine generators, turbine generator auxiliaries, heating, ventilation, air conditioning excluding work requiring certification, insulation, buildings and structures, painting and protective coatings, and rigging. Replaces and installs, performs fixed vibration monitoring, performs field analysis, inspects, cleans, repairs, adjusts, balances, lubrication, and aligns mechanical equipment such as turbines, boilers, pumps, valves, fans, air compressors, generators, heat exchangers, strainers, condensers, piping, screens, fire protection and other mechanical equipment.