Oklahoma Earthquake Felt at Nebraska Nuclear Power Plant

Cooper Nuclear Plant in Nebraksa

An earthquake centered in central Oklahoma was felt at a Nebraska nuclear power plant, causing plant operators to declare an Unusual Event.

Tremors from the 5.6-magnitude earthquake near Pawnee, Oklahoma, on Sept. 3 triggered a seismic event alarm at the Cooper nuclear plant. The Nebraska Public Power District declared an Unusual Event to the U.S. Nuclear Regulatory Commission. The reactor, however, was not affected by the quake and remains at 93 percent power. The earthquake could be felt as far away as Nebraska, Texas and Arkansas.

Workers completed inspections and walkdowns at the plant several hours later and did not report any damages or injuries. The Unusual Event declaration was then terminated.

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