ENS 45810
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ENS Event | |
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22:42 Apr 4, 2010 | |
Title | Notification of Unusual Event - Earthquake Felt on Site |
Event Description | Seismic Recording System activation with ground motion readily felt by control room personnel. Plant inspections performed to date show no observable damage to systems or structures."
The seismic event was reported by U.S. Geological Survey as a magnitude 7.2 event occurring 26 km (16 miles) SW of Guadalupe Victoria, Baja California, Mexico. Initial ground motion analysis on site indicated 0.027 g acceleration in the transverse direction. The licensee has notified the NRC Resident Inspector.
The Notification of Unusual Event classification was terminated at 1725 PDT on 4/4/2010 after completion of walk downs with no equipment issues being found. Notified R4DO (Okeefe), NRR EO (Bahadur), IRD (Gott), DHS (Vestal), and FEMA (Via). |
Where | |
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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:+-3.58 h-0.149 days <br />-0.0213 weeks <br />-0.0049 months <br />) | |
Opened: | Robert Meyers 19:07 Apr 4, 2010 |
NRC Officer: | Mark Abramovitz |
Last Updated: | Apr 4, 2010 |
45810 - NRC Website
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Unit 1 | |
---|---|
Reactor critical | Not Critical |
Scram | No |
Before | Decommissioned (0 %) |
After | Decommissioned (0 %) |
Unit 2 | |
---|---|
Reactor critical | Not Critical |
Scram | No |
Before | Hot Shutdown (0 %) |
After | Hot Shutdown (0 %) |
Unit 3 | |
---|---|
Reactor critical | Critical |
Scram | No |
Before | Power Operation (50 %) |
After | Power Operation (50 %) |
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 | |
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