Manitoba Hydro reports progress in upgrade at 224-MW Kelsey

Canada utility Manitoba Hydro reports it is making progress on a major rehabilitation and upgrade program involving all seven turbine-generators at its 224-MW Kelsey Generating Station, on the Nelson River in northern Manitoba.

The work is expected to add 84 MW of capacity to the project, which began operation in 1961. Outages are scheduled over about six years, ending in 2012, the province-owned utility said.

Site infrastructure improvements made to accommodate a construction workforce are complete. They include a construction camp, sewer and water system upgrades, fire protection system upgrades, and new storage buildings.

The C$265 million (US$218 million) program involves installing new runners with higher output ratings and new embedded parts in water passageways, refurbishing unit intake gates, rewinding generator stators, and rehabilitating and upgrading generator rotor field windings. Manitoba Hydro also is installing new static exciters, unit transformers, servomotors, self-lubricated wicket gate regulation system bushings, scroll case access hatches, and unit control and monitoring systems.

Contractors include PCL Constructors Canada, civil construction contractor, and Comstock Canada (Manitoba), mechanical construction contractor. Alstom Hydro Canada is supplying new turbines, rewinding generators, and rehabilitating rotors. (HNN 6/20/06) ABB Canada is supplying digital static excitation systems.

Other suppliers include: Enerfin, Quebec, new generator coolers; Hitachi Canadian Industries, embedded parts, refurbishment of operating rings, and inner and lower headcovers; and Pauwels Canada, new transformers.

Manitoba Hydro said the turbine and generator work, which will increase the project’s total generating capacity to 308 MW, is one of three components of a broad rehabilitation program at Kelsey. The other components involve mitigation of concrete alkali aggregate reactivity and rehabilitation of cranes and other plant auxiliaries.

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