Prairie Island nuclear Unit 2 back online after false fire alarm

 Prairie Island nuclear Unit 2 back online after false fire alarm

Caption: Prairie Island 2 nuclear power plant

Prairie Island 2 nuclear power plant in Minnesota is back online three weeks after a false fire alarm brought the reactor offline.
 
Xcel Energy (NYSE: XEL) workers brought the unit back online March 28 after a disk ruptured in a pressure tank and triggered the false fire alarm on March 5. The alarm resulted in an unusual event declaration with the U.S. Nuclear Regulatory Commission.
 
Unit 2 continued to operate through the outage.
 
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