NRC to increase oversight at South Carolina nuclear power plant

The Nuclear Regulatory Commission (NRC) on Oct. 12 said it will increase oversight at Duke Energy (NYSE: DUK)’s two-unit, 2,258 MW Catawba nuclear power plant near York, S.C., about 18 miles south of Charlotte, N.C.

The increased oversight from the NRC is due to violations linked to an event in April where the plant temporarily lost offsite power.

The NRC said the two violations involved an incorrect modification to a Unit 1 generator protective relay that resulted in the loss of offsite power event. The NRC determined that the violation for Unit 1 was appropriately characterized as “white,” meaning it has low to moderate safety significance. The violation for Unit 2 was found to be “green,” or very low safety significance.

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