June 3 (Reuters) - The U.S. Nuclear Regulatory Commission has launched a special inspection at the Quad Cities Generating Station in Illinois, to review two events caused by battery issues, the agency said on Tuesday.
Constellation Energy CEG.O operates the two-unit plant in Cordova, Illinois.
The first event involved a unit 1 scram caused by a degraded condition on a unit 2 battery, while the second event involved a notice of unusual event, due to a brief fire on the same unit 2 battery, the NRC said in a press release.
"While the plant remained safe during these occurrences, an independent review by the regulator is warranted, given questions related to battery problems at the root of both events," said Jack Giessner, region three administrator.
Constellation Energy was not immediately available for comment.
The NRC recently completed a special inspection at the plant to review the inoperability of safety-related vacuum breakers, it said.
(Reporting by Noel John in Bengaluru; Editing by Lisa Shumaker)
((Noel.John@thomsonreuters.com;))
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