Lewiston Pump Turbine Overhaul
About This Project
Gracon is disassembling, rehabilitating, and reassembling all 12 pump turbine generators at the plant in 7–month outages. Gracon has completed 10 overhauls to date. Work includes removal and replacement of the embedded discharge ring, seal ring, wicket gates, and the runner. It also includes refurbishing the stay ring, re-contouring the stay vanes, machining the horizontal surfaces, and line boring.
Started
April 2012
Completed
Ongoing
Owner
New York Power Authority
Location
Lewiston, New York
