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Exelon's Quad Cities-2 nuclear unit operates at 79% after maintenance

Washington — Exelon Generation's 994-MW Quad Cities-2 nuclear unit in Cordova, Illinois, was operating at 79% capacity and in the process of returning to full power Monday morning after a 7.5-day outage to repair the unit's main transformer, a company spokeswoman said.

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The unit was taken offline at 12:05 am CDT (0505 GMT) August 6, Exelon spokeswoman Brandy Donaldson said in an August 7 email.

Quad Cities-2 returned when it synchronized with the electricity grid 12:08 pm (1608 GMT) Sunday, Donaldson said Monday in an email.

"Significant maintenance was limited to the unit's main power transformer" and "the repairs were successful," Donaldson added, but she did not say when Quad Cities-2 is expected to return to full power.

The adjacent 912-MW Quad Cities-1 was operating at 100% early Monday, the US Nuclear Regulatory Commission said in its daily reactor status report.

--Steven Dolley, steven.dolley@spglobal.com

--Edited by Valarie Jackson, valarie.jackson@spglobal.com