Columbia Power Corp. plans to complete permanent repairs in June to the intake channel of the 185-MW Arrow Lakes hydroelectric project in British Columbia.
Power generation was suspended at the end of November 2005 for the duration of the C$20 million (US$17.2 million) repair work.
The company first detected damage to the concrete floor of the intake channel in 2004, which it blamed on uplift pressure. Temporary repairs were made later that year at the power plant, at BC Hydro’s Hugh Keenleyside Dam.
Columbia Power, which owns the plant with Columbia Basin Trust, said it expects to recover most of the repair costs through the insurer and the design-build contractor.
Peter Kiewit Sons Co. Ltd. is the main contractor. Subcontractors include MWH, Canadian Dewatering, and Northwest Hydraulics.