LOS ANGELES (AP) — The utility that owns California’s last operating nuclear power plant will submit research to federal regulators this week analyzing the threat of earthquakes at the Diablo Canyon facility.

Pacific Gas and Electric Co. says the work re-evaluates the impact that earthquakes and large waves could have on the plant near San Luis Obispo. Its Monday statement says the research confirms the plant is safe — but the company didn’t provide report details.

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The Nuclear Regulatory Commission called on nuclear plants to re-examine such risks after Japan’s Fukushima Dai-ichi disaster. PG&E’s report will be submitted Thursday.

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The Associated Press disclosed in August that a federal expert wanted the NRC to shut down Diablo Canyon until it determines whether the reactors can withstand shaking from nearby faults. NRC rejected that recommendation.

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