Lewiston Pump Turbine Overhaul

Lewiston Pump Turbine Overhaul

Gracon is disassembling, rehabilitating, and reassembling all 12 pump turbine generators at the plant in 7 month outages. Gracon has completed 6 overhauls to date. Work includes removal and replacement of the embedded discharge ring, seal ring, wicket gates, and the runner. It also includes refurbishment of the stay ring, re-contouring of the stay vanes, machining of the horizontal surfaces, and line boring.

Category
Hydropower
Started

April, 2012

Completed

Ongoing

Owner

New York Power Authority

Location

Lewiston, New York