On Saturday, March 17, 2012, the Canadian Nuclear Safety Commission (CNSC) said it was informed of a moderator leak on Bruce A Unit 2 as it was being re-started following refurbishment. The CNSC said Bruce Power staff took the appropriate action and returned the unit to the shut down state while they investigated the cause. The leak was determined to be inside confinement and has been isolated. There was no release to the environment and no plant worker received any dose.
The unit will remain shut down while the leak is investigated further and steps are taken to prevent recurrence. The other units in the Bruce A station were not affected. CNSC staff continues to monitor the situation.
Bruce Power’s 2,300-acre site houses the Bruce A and B generating stations, which each hold four CANDU reactors. Six of those units are currently operational and produce more than 4,700 MW.
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