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Exelon's Quad Cities-1 nuclear unit in Illinois reducing output before refueling

Washington (Platts)--4 Jan 2017 552 pm EST/2252 GMT


Exelon Generation's 912-MW Quad Cities-1 nuclear unit in Cordova, Illinois, is reducing its output prior to an upcoming refueling and maintenance outage, a company spokesman said Wednesday.

For commercial reasons, Exelon does not disclose outage schedules for its generating units.

Quad Cities-1 was operating at 98% of capacity early Wednesday morning, down from 99% Tuesday and 100% Monday, according to daily status reports from the US Nuclear Regulatory Commission.

Quad Cities-1 "is in coastdown for its spring refueling outage," Exelon spokesman Paul Dempsey said in an email Wednesday. Dempsey said there are expected to be "some minor adjustments to the generation output throughout the coastdown as we are maximizing thermal efficiency to the extent possible."

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US nuclear power units typically reduce their output gradually before shutting for refueling. This so-called coastdown period varies in duration from several days to several weeks.

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

--Edited by Annie Siebert, ann.siebert@spglobal.com

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