The Nine Mile Point 2 nuclear power plant in Scriba, NY, shut down Tuesday following an on-site electrical power failure, plant operator Constellation Energy Nuclear Group said.
The cause of the power failure is still under review. The loss of the power supply had an impact on the flow of cooling to both of the plant’s reactor recirculation pumps, the U.S. Nuclear Regulatory Commission (NRC) said.
In response, the plant’s operators manually scrammed the reactor at 1:43 a.m., which entails inserting all of the control rods to halt the fissioning process.
The two NRC resident inspectors assigned to Nine Mile Point will review the event, including troubleshooting on the loss of the power supply and any repairs. The plant is currently in “hot” shutdown, which means the reactor and reactor coolant system remain heated and pressurized, NRC officials said.
Constellation officials said the reactor lost power from an uninterruptible power supply. The reactor shutdown should not have an impact on electrical service to homes and businesses in the region, company officials said.
At full power, Nine Mile Point 2 generates 1,360 megawatts, enough for about 1.4 million average households.