A professional who supervises and coordinates activities of workers engaged in installing, adjusting, repairing, and maintaining electrical and mechanical parts of hydroelectric turbines, generators, and auxiliary equipment.

• Trains workers in repair and maintenance procedures.
• Performs duties as described under supervisor master title.
• May be designated according to type of powerplant in which maintenance is performed as diesel-powerplant supervisor; geothermal-powerplant supervisor; hydroelectric-powerplant supervisor; nuclear-powerplant supervisor; steam-powerplant supervisor.