Maintenance of manually, hydraulically, and electrically operated regulating valves, slide gates, various sizes and types of pumps, stationary and mobile overhead hoists and cranes, compressors and pneumatic systems, hydraulic power units, domestic water systems, and plant mechanical equipment. Equipment operated and maintained includes, but is not limited to, large rotating equipment generators, motors, overhead hoists and cranes, compressors and pneumatic systems, hydraulic power units, domestic water systems, and other associated pump plant mechanical equipment.