One CT Reactor Back In Operation

Thursday, May 29, 2014 @ 04:05 PM gHale

One of two reactors at Connecticut’s only nuclear plant restarted operations Wednesday after a weekend power outage, but the other remained offline as the company investigated the release of water from a cooling tank.

Ken Holt, a spokesman for Millstone Power Station in Waterford, CT, said Unit 2 should return to 100 percent power within a day. He said there was no estimate for when Unit 3 would be back online.

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The outage that began Sunday morning was the result of a malfunctioning relay. The Nuclear Regulatory Commission (NRC) declared it an “unusual event,” the lowest of four levels of emergency classification used by the agency.

The NRC said in a preliminary notification that all safety systems responded as designed but the recovery from the outage at Unit 3 became complicated when a relief disk gave out and some water spilled inside a containment building.

Holt said none of the contaminated was released into the atmosphere and the water has since been cleaned up. The return to service of Unit 3 is pending further evaluations and repairs, the NRC said.

“We’re making sure all systems are working the way they should,” Holt said.

Millstone, which is owned by Dominion Resources Inc., supplies half of all power in Connecticut and 12 percent throughout New England.

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