NRC Approves Uprate For Peach Bottom NPP

The Nuclear Regulatory Commission has approved a request by Exelon Generation Co. LLC to increase the generating capacity of Peach Bottom Atomic Power Station, Units 2 and 3, by an estimated 1.66 percent, the federal regulator has announced.

Peach Bottom NPPThe agency determined that Exelon could safely increase the Pennsylvania reactors’ output primarily through more accurate means of measuring feedwater flow. The 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. 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 3951 to 4016 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. The NRC published a notice about the power uprate application in the Federal Register on May 2, 2017. The agency’s evaluation of the Peach Bottom uprate is available on the NRC’s website.

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  • Anonymous

    Are the uprate modifications being done in-house or by an AE firm such as Bechtel, etc?