The U.S. Nuclear Regulatory Commission (NRC) said it is monitoring an Unusual Event, the lowest emergency level in the NRC’s emergency classification system, at Unit 2 of the 1,100 MW Prairie Island Nuclear Generation Plant. The declaration was made due to an indication of an increase in reactor coolant system leakage.
The two-unit plant, operated by Northern States Power Co.– Minnesota, a unit of Xcel Energy (NYSE: XEL), is approximately 26 miles southeast of Minneapolis.
Unit 2 is currently shut down for a refueling outage. The workers at the plant identified an apparent decrease in reactor vessel coolant level and are taking actions to further understand the situation. The plant is maintaining the appropriate level of water in the reactor and the NRC is monitoring the plant’s efforts.
There was no radiation released or impact to plant workers or the public. The NRC said Unit 1 is running at full power.
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