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Indian Point Unit 3 Disconnected from Grid to Repair Transformer

The nuclear power plant unit was shut down after operators noticed gasses in the transformer oil.

The following was provided by : Control room operators disconnected Indian Point’s unit 3 nuclear power plant from the electrical grid last night in order to troubleshoot an issue with an auxiliary electrical transformer. The transformer takes electricity created from the plant’s main electrical generator and changes its voltage so that it can be used to power some of the plant’s pumps and motors on site.

Operators had observed an increase in gases within the transformer oil during routine sampling on Tuesday. An increase in gases is an indicator of potential transformer degradation. Repairs to the transformer can only be done when the transformer is disconnected from the electrical generator.

The plant will return to service after the auxiliary transformer is disconnected and alternate power to the affected equipment is provided.

There was no release of radioactivity and no threat to the safety of workers or the public. The Nuclear Regulatory Commission was notified.

Unit 3 had operated for 327 continuous days since returning to service following a refueling shutdown in April 2011.

Unit 2 continues operating at full power and has been online for 43 continuous days since returning to service following replacement of a seal inside a pump.   

Indian Point Energy Center, in Buchanan, N.Y., is home to two operating nuclear power plants, unit 2 and unit 3, which generate approximately 2,000 megawatts of electricity for homes, businesses and public facilities primarily in New York City and Westchester County.

paulfeiner March 01, 2012 at 01:06 AM
Last night the Greenburgh Town Board voted unanimously to ask the Nuclear Regulatory Commission to shut down this dangerous and old power plant. PAUL FEINER Greenburgh Town Supervisor
Dan March 01, 2012 at 02:29 PM
Maybe with that same thought process the Village of Buchanan or the Town of Cortlandt should vote to increase the price of the electricity to all the residents of Greenburgh. With all the complaints about this plant there has still been no better plan put forward to supply energy for the area. Until then we will all live with it.

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