Waterford – Operators at the Millstone Power Station partially shut down Unit 2 on Thursday after a battery used to power emergency safety equipment was found to be not working.
Shutdown of the plant began at about 8 a.m. as workers simultaneously tried to repair the battery, Millstone spokesman Ken Holt said. The plant is required by the Nuclear Regulatory Commission to shut down whenever the battery is inoperable.
By mid-afternoon, when the unit was at about 20 percent power, crews had bypassed the battery, so the plant could be brought back up to full power. As of this morning it was at about 99 percent power, Holt said.
The battery will be replaced, he said.