WATERFORD, Conn. (AP) _ Officials are investigating why a cooling water pump in the Unit 2 reactor at the Millstone nuclear power complex in Connecticut stopped unexpectedly during routine maintenance work, causing the reactor to automatically shut down.
Ken Holt, spokesman for the plant’s owner, Dominion, says the reactor shut down at 3:15 p.m. Sunday after the plant’s safety system performed as designed. It has not been reactivated by Monday evening.
The system will only be restarted after an investigations figures out what caused the cooling water pump to shut down.
Holt says the federal Nuclear Regulatory Commission, which keeps an inspector at the power complex, has been notified.
Richmond, Va.-based Dominion says the Unit 2 reactor that went offline generates 880 megawatts.
Millstone’s two operating reactors generate about 2,100 megawatts, enough to power 500,000 homes.
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