ENS Event | |
|---|---|
04:10 Mar 29, 2014 | |
| Title | Discovery of After-The-Fact Emergency Condition -- Unusual Event Due to Seismic Event |
| Event Description | 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. |
| Where | |
|---|---|
San Onofre  California (NRC Region 4) | |
| Reporting | |
| Emergency class: | Unusual Event |
| 10 CFR 50.72(a) (1) (i), Emergency Class Declaration | |
| Time - Person (Reporting Time:+58.57 h2.44 days <br />0.349 weeks <br />0.0802 months <br />) | |
| Opened: | Doug Knudson 14:44 Mar 31, 2014 |
| NRC Officer: | Jeff Rotton |
| Last Updated: | Mar 31, 2014 |
| 49975 - NRC Website
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WEEKMONTHYEARENS 499752014-03-29T04:10:00029 March 2014 04:10:00
[Table view]10 CFR 50.72(a)(1)(i), Emergency Class Declaration Discovery of After-The-Fact Emergency Condition -- Unusual Event Due to Seismic Event ENS 482322012-08-26T19:39:00026 August 2012 19:39:00 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Unusual Event Declared Due to Earthquake Felt Onsite ENS 478562012-04-20T19:49:00020 April 2012 19:49:00 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Unusual Event Declared Due to Electrical Panel Fire in Turbine Building ENS 474012011-11-01T21:50:0001 November 2011 21:50:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release, 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Alert Declared Due to an Ammonia Leak ENS 470642011-07-16T13:12:00016 July 2011 13:12:00 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Unusual Event Declared Due to Entry Into Eal Hu4.1 ENS 458102010-04-04T22:42:0004 April 2010 22:42:00 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Notification of Unusual Event - Earthquake Felt on Site ENS 455642009-12-12T09:26:00012 December 2009 09:26:00 10 CFR 50.72(b)(3)(v)(A), Loss of Safety Function - Shutdown the Reactor, 10 CFR 50.72(a)(1)(i), Emergency Class Declaration, 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Unusual Event Declared Due to Both Emergency Diesel Generators Being Inoperable 2014-03-29T04:10:00 | |