On March 28, 2014 at 2110 PDT, station staff felt a minor seismic event, which was verified on the NEIC [National
Earthquake Information Center]. On-shift staff reviewed basis documentation and
EAL [Emergency Action Levels] classification, and concluded the event was below the threshold to classify the event.
During post event reviews [conducted on 3/31/2014], it has been determined that those events met the classification criteria for declaration of a Notification of Unusual Event for a seismic event as specified by the Emergency Plan. No emergency situation exists at this time.
Site personnel did perform the steps of the Earthquake abnormal operating procedure even though the entry requirements were not met. There were no plant or equipment issues identified during the site walk downs.
The licensee has notified the NRC Resident Inspector, the State of
California and other Local authorities.
