Whitehorse Hydro Unit 3 (WH3) 10-Year Overhaul

In 2027, the Corporation will be performing a major overhaul on the WH3 Hydro Unit. A stamped detailed scope of work is included as Appendix 7 – Detailed Scope of Work. The detailed scope of work presented in Appendix 7 outlines desired outcomes of the overhaul as well as general and technical requirements of the site contractor for supplying specialized work, materials and documentation leading up to the site work, during the site work, and at the project closeout stages. The Whitehorse Hydro Station, in service since 1958, is located in Whitehorse, Yukon. The station has four vertical hydro turbine generators, with a total power output of 40 MW. WH3 is a vertical, propeller-type hydro turbine generator commissioned in 1967-1968 and has a power output of 8.4 MW. The generator, manufactured by Canadian General Electric, is rated at 9.4 MVA at 0.85 PF with a 6.9 kV output and a frequency of 60 Hz. The rotor has 36 poles, operates at a nominal speed of 200 rpm and is rated for 450 rpm overspeed. The turbine is a propeller-type turbine, manufactured by Allis-Chalmers, rated at 11 000 hp and operated at a rated net head of 59 ft. The last WH3 major overhaul was done in 2013.