Crews were working to repair the seal, which was discovered at about 1 a.m. Monday, but it was unclear Tuesday how long the plant would remain offline, Progress Energy spokeswoman Julia Milstead said.
The condenser converts steam that has been used to power the turbines and generate electricity back into water, Milstead said. The unit – and the leaky seal – is completely separate from the nuclear material at the plant, she said.
The shutdown won't affect Progress Energy's ability to provide electricity to customers, company officials said.
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