Exelon Generation Co.’s request to increase the generating capacity of Peach Bottom Atomic Power Station, Units 2 and 3, by an estimated 1.66 percent, gained approval.

The Nuclear Regulatory Commission (NRC) determined Exelon could safely increase the Pennsylvania reactors’ output primarily through more accurate means of measuring feedwater flow.

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NRC staff came to this conclusion after reviewing Exelon’s evaluations showing the plant’s design can handle the increased power level.

The NRC’s safety evaluation of the plant’s proposed power uprate focused on several areas, such as the nuclear steam supply systems, instrumentation and control systems, electrical systems, accident evaluations, radiological consequences, operations and training, testing, and technical specification changes.

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In addition, the NRC staff also conducted independent confirmatory calculations of selected areas, which increased their confidence that the uprate was viable. 

The power uprate for Peach Bottom, Units 2 and 3, located in Delta, PA, authorizes an increase of each reactor’s maximum power level from 3,951 to 4,016 megawatts thermal. In terms of gross output, the power uprate represents an increase of approximately 20 megawatts electric over the current gross output for each unit.

Exelon plans to implement the power uprate for both units within 90 days.

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