Event Report: VA nuke leaks coolant

The North Anna nuclear power plant in Virginia reported to the NRC today that the Letdown Pressure Control Valve in the Unit 1 reactor failed yesterday morning, resulting in a release of coolant to the Pressurizer Relief Tank. After the valve reseated, operators at North Anna determined that approximately 42 gallons of water were released during the event, causing the plant to enter an after-the-fact Notice of Unusual Event. Cause of the valve failure is under investigation.
 
North Anna had recently restarted both reactors at the plant after an August earthquake shut them down.