Job Performance: Performance is satisfactory when: Thorough knowledge of equipment, maintenance practices, and operating instructions as related to control systems, boiler, turbine and generator units, auxiliaries, piping systems, station electrical systems, switchyards, tie-lines, feeders, and environmental controls. Takes periodic readings reflecting performance of equipment, record data, runs required tests, interpret results, performs adjustments and corrections, as necessary, to ensure equipment is operating properly, and places equipment in service and removes equipment from service as required or as directed.