Wednesday, May 29, 2013

Beaver Valley Nuclear Power Station: Nuclear Reactor in forced shutdown

SHIPPINGPORT — A reactor at the Beaver Valley Nuclear Power Station was shut down Tuesday morning in a rare forced outage caused by a malfunctioning generator.

A spokesman for the Nuclear Regulatory Commission confirmed that Unit 2 was taken offline by plant operator FirstEnergy because of vibrations in the main generator. The vibrations resulted from parts in the main generator stator, a stationary part of the rotary system used in an electric generator, that had either broken or become loose, said Neil Sheehan of the NRC.

“Remember that these machines rotate at 1,800 rpm and will have some wear from actual mechanical vibrations, as well as from repeated heating and cooling cycles,” he said.