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Local

Lightning strike causes 'Unusual Event'

Both units at La Salle Station shut down

LISLE, Ill. — The U.S. Nuclear Regulatory Commission Region III staff is monitoring the La Salle nuclear power plant after a lightning strike knocked out offsite power to both Units 1 and 2.

The NRC has mobilized its Incident Response Center in Region III, located in Lisle, Ill., and is monitoring the events along with the resident inspector onsite.

La Salle declared an Unusual Event around 3:11 p.m. Wednesday, after external power was lost to the two Mark II boiling water reactors. The plants automatically shut down and all control rods were inserted.

The plant’s diesel generators are currently supplying power to plant equipment.

An Unusual Event is the lowest levels of the NRC’s four level emergency classification system.

The two-unit site is operated by Exelon Generation Co., and is located in Marseilles, Ill., roughly 11 miles southeast of Ottawa.

 

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