The inspectors identified a non-cited violation (
NCV) of
10 CFR 50.63 for the licensees non-compliance with the station blackout rule since 1993. The licensee failed to demonstrate that electrical power for Unit 1 could be provided within ten minutes of the onset of a station blackout (
SBO) event and subsequently failed to perform a coping analysis when the ten minutes was not demonstrated. The licensee initiated condition report 2007-28746 with an action to perform a coping analysis in lieu of demonstrating that the ten minute commitment could be met. The coping analysis will be reviewed by the NRC (Office of Nuclear Reactor Regulation). This finding is more than minor because it is associated with the equipment performance attribute and affected the
mitigating systems cornerstone objective of ensuring the availability, reliability, and capability of systems that respond to
initiating events to preclude undesirable consequences during a station blackout. The inspectors did not identify a cross-cutting aspect for this finding. (Section 4OA5.1
