The Entergy (NYSE:ETR) Indian Point 3 nuclear unit in Buchanan, N.Y., didn’t stay offline long as the company reported Dec. 17 that it has returned the reactor to service.
Control room operators returned Indian Point Unit 3 to service during the morning of Dec. 17, Entergy said in a news release. The nuclear unit was listed at 12% power early Dec. 17 by Nuclear Regulatory Commission (NRC) data.
Unit 3 had shut down automatically Monday night Dec. 14 after its main electrical generator sensed an electrical disturbance in transmission lines that connect the plant to the external power grid.
Workers replaced several electrical insulators on a high-voltage transmission line this week prior to returning Unit 3 to service. Insulators protect transmission lines and related electrical equipment from the high-voltage associated with each line, Entergy said.
Engineers will examine the replaced insulators over the next few days to help determine the cause of the electrical disturbance; the company went on to say. Unit 2 was not affected by the incident.
Indian Point Energy Center is home to two operating nuclear power plants, Unit 2 and Unit 3, which generate approximately 2,000 MW and supply about 25% of power used annually by homes, business and public facilities in New York City and Westchester County.
Indian Point Units 2 and 3 are continuing to operate while NRC hears challenges to their proposed 20-year license renewals.