The Globe and Mail reports in its Monday edition that two reactors at the Bruce Nuclear Generating Station have violated the terms of its operating licence, its operator and the federal regulator have revealed.
The Globe's Matthew McClearn writes that Bruce Power, which operates the plant in Kincardine, Ont., announced in a July 13 statement that pressure tubes in Unit 3 and Unit 6 were found to have "higher-than-anticipated readings." The following day, the Canadian Nuclear Safety Commission (CNSC) issued its own statement saying hydrogen equivalent concentration (Heq) levels in some of the station's pressure tubes exceeded the allowable limit of 120 parts per million.
Pressure tubes are six-metre-long rods that contain bundles of uranium fuel. A Candu reactor contains several hundred of them, and they are considered the principal life-limiting component of Canada's reactor fleet. In response to Bruce Power's contraventions, on July 13 the CNSC ordered the company, along with fellow Candu operators Ontario Power Generation and New Brunswick Power, to review the fitness for service of their pressure tubes and report back no later than the end of July.
Candu is owned by SNC-Lavalin Group.
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