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Pinhole Leak

Tuesday, December 4, 2012

Oyster Creek Returns to Service Following Refueling and Maintenance Outage

Findings have been addressed, according to the Nuclear Regulatory Commission

Oyster Creek Generating Station has returned to service after a 42-day refueling and maintenance outage. According to Tuesday’s Power Reactor Status Report by the Nuclear Regulatory Commission, the nuclear power plant was operating at 22 percent. The power generator was taken offline on Oct. 22 for a planned refueling outage. Since that outage, the NRC has reported the discovery of “indications,” or precursors to cracks, in the reactor nozzle and a pinhole leak in the reactor vessel head cooling system. Both issues have been resolved, NRC spokesman Neil Sheehan said. “NRC metallurgical specialists reviewed the company’s evaluation of the flaws and its repair plans and work. We were satisfied that the repairs were thorough and consistent …

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Wednesday, November 28, 2012

NRC Finds Pinhole Leak at Oyster Creek, Denies Activist's Petition

A pinhole leak found on a reactor vessel head cooling system at the nuclear power plant will be repaired before Oyster Creek returns online

A pinhole leak has been found on a reactor vessel head cooling system at Oyster Creek Generating Station, according to Nuclear Regulatory Commission (NRC) spokesman Neil Sheehan. The leak was discovered on Tuesday during a refueling and maintenance outage that began at the nuclear power plant on Oct. 22. The system is utilized to cool the reactor vessel head during shutdown, he said. The pinhole leak was found through an earlier weld and was weeping approximately two to three drops per minute, he said. “Exelon will need to develop a repair plan that is consistent with the American Society of Mechanical Engineers Code (ASME),” Sheehan said. “NRC metallurgical specialists will continue to engage Exelon on the leak, including a review of the …

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