Xcel Energy's 585-MW Prairie Island-2 nuclear unit in Welch, Minnesota, was off the grid and operating at 7% of capacity Monday afternoon for repair of a turbine lube oil leak, company spokesman Matt Lindstrom said.
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The leak was discovered Saturday and operators disconnected the unit from the grid early Monday morning, Lindstrom said in an email, adding that the leak is expected to be repaired "in the next couple of days."
"We do not expect to shut down the unit," Lindstrom said. "Our current plan is to conduct the work at this power level."
The unit was operating at 42% of capacity early Monday morning after operating at 100% of capacity Sunday, the US Nuclear Regulatory Commission said in daily reactor status reports.
The 590-MW Prairie Island-1 was operating at 100% of capacity early Monday, NRC said.
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