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Operators bringing North Anna unit 2 out of a refueling outage shut down the reactor again after reports of vibration and arcing in the main turbine. The Westinghouse reactor was at 60 percent power Friday when workers reported increased vibration and arcing on a bearing of the main generator exciter...

Engine coolant wound up in the oil system of a diesel generator at San Onofre unit 3, and Southern California Edison believes someone might have tampered with it. Both units at the plant are offline following the discovery of premature tube wear in their steam generators, and the emergency diesel in...

Constellation Energy announced Tuesday that Mitsubishi Power Systems Americas will replace the electric generator at its upstate New York nuclear plant. During a maintenance and refueling outage planned for 2014, Constellation will replace the generator, excitation system and related auxiliaries at the...

One of the Cooper Nuclear Station’s backup generators now resides in a new, custom-designed enclosure engineered by Lectrus. The Nebraska Public Power District contracted with Interstate Power Systems to build a third diesel generator at the site. That company, in turn, hired Lectrus to build...

The project includes activities for the energy power upgrade, which will make the reactor at Grand Gulf the single most powerful nuclear generating unit in the nation. It will increase Grand Gulf’s output by approximately 178 Megawatts (MW). This is a 13 percent increase above current production...