The Jenpeg hydro generating station in northern Manitoba has been shut down after cracks were discovered in the shaft of one of the underwater turbines.
"It's not serious and we think we can deal with that particular shaft by doing some grinding and doing some coating work on it," said Manitoba Hydro spokesman Glenn Schneider.
Hydro has shut down operation of the entire 30-year-old dam, however, so the other turbines could be examined.
"We don't know the status of those other units," Schneider said.
He expects it to be shut down for a few months as the inspections occur and engineers attempt to repair the cracked turbine.
Jenpeg is not a big money maker for Hydro but will lose about $100,000 a day while it is closed.
The generating station, located about 525 kilometres north of Winnipeg, took seven years to build and was completed in 1979 at a cost of $310 million.
It is situated on the upper arm of the Nelson River, at the north end of Lake Winnipeg.
In addition to generating electricity, Jenpeg's powerhouse and spillway structures are used to control and regulate the outflow waters of Lake Winnipeg, which in turn is used as a reservoir to store water to ensure enough water is available to run the northern generating stations.
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