Nuclear plant uprate approved

The Nuclear Regulatory Commission (NRC) has approved a request by Exelon Generation Co. to increase the power generating capacity of Limerick Generating Station, Units 1 and 2, by 1.65 percent each.

The NRC staff’s evaluation determined that Exelon could safely increase the reactors’ power output primarily through more accurate means of measuring feedwater flow. As part of its evaluation, NRC staff reviewed the company’s analysis showing the plant’s design can accommodate the increased power level.

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

The power uprate for Limerick’s GE boiling water reactors will increase each unit’s power generating capacity from approximately 1,189 to 1,205 MWe. Exelon intends to implement Unit 1’s uprate within 90 days and Unit 2’s uprate within 90 days of the completion of its 2011 spring refueling outage.

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