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The Pilgrim Nuclear Power Station was back at full power Monday after crews repaired a steam leak discovered earlier this month.

The reactor had been operating at 20 percent power for much of last week as crews repaired a “feedwater heater turbine extraction steam leak,” according to a statement from Entergy Corporation, the plant’s operator.

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The company said the leak at the Plymouth, MA, plant, discovered Aug. 15, posed “no threat to the safety of plant workers or the general public.”

Back in February, the Pilgrim plant learned it would undergo more federal inspections after regulators downgraded the facility.

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The downgrading of Pilgrim came four months after engineers and crews made an October “scram,” or unplanned shutdown, when the plant lost power from a 345-kilovolt NStar line that provides electricity to the plant.

That shutdown – the second such incident in 2013 – lasted a week. Pilgrim was offline more than 80 days in 2013, with 46 of those days from scheduled refueling and maintenance.

In a report filed with the Nuclear Regulatory Commission (NRC) and released last month, Entergy Corp. – the Louisiana company that operates Pilgrim and 10 other nuclear plants in the U.S. – said the root cause of the October shutdown was a buckled wooden tower support for an electric transmission line.

Entergy said that NStar replaced the defective wooden pole and inspected two others.

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