ENS 47769
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ENS Event | |
|---|---|
03:36 Mar 26, 2012 | |
| Title | Unusual Event Declared Due to Seismic Activity |
| Event Description | On March 25, 2012 at 2336 EDT, an Unusual Event was declared due to an earthquake felt on site. The site entered EAL HU1.1. No plant systems were affected. The National Earthquake Information Center reported a magnitude 3.1 seismic event 6 miles south-south west of Mineral, Virginia. A plant inspection is on-going to determine any plant issues related to the seismic event. Unit 1 is in a refueling outage and containment integrity was maintained. Unit 2 continues in full power operation.
The licensee notified the NRC Resident Inspector, State and local agencies. Notified DHS SWO, FEMA, NICC and Nuclear SSA via email.
On March 26, 2012 at 0410 EDT, the Unusual Event was terminated. The basis for the termination was that all equipment walkdowns are complete with no damage discovered. The licensee will notify the NRC Resident Inspector. Notified the R2DO (Haag), NRR EO (Brown), IRD (Grant), DHS SWO, FEMA, NICC and the Nuclear SSA via email. |
| Where | |
|---|---|
North Anna  Virginia (NRC Region 2) | |
| Reporting | |
| Emergency class: | Unusual Event |
| 10 CFR 50.72(a) (1) (i), Emergency Class Declaration | |
| Time - Person (Reporting Time:+-3.63 h-0.151 days <br />-0.0216 weeks <br />-0.00497 months <br />) | |
| Opened: | Ted Webner 23:58 Mar 25, 2012 |
| NRC Officer: | Vince Klco |
| Last Updated: | Mar 26, 2012 |
| 47769 - NRC Website
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Unit 2 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (100 %) |
| After | Power Operation (100 %) |
WEEKMONTHYEARENS 560882022-09-04T23:39:0004 September 2022 23:39:00
[Table view]10 CFR 50.72(a)(1)(i), Emergency Class Declaration Security Event - Unauthorized Individual in Owner Controlled Area ENS 539092019-03-03T14:16:0003 March 2019 14:16:00 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Notice of Unusual Event Due to Unconfirmed Fire Alarm ENS 477692012-03-26T03:36:00026 March 2012 03:36:00 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Unusual Event Declared Due to Seismic Activity ENS 476262012-01-30T23:56:00030 January 2012 23:56:00 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Unusual Event Declared Due to an Earthquake of Magnitude 3.2 ENS 472282011-09-01T09:18:0001 September 2011 09:18:00 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Unusual Event Declared Due to an Aftershock Earthquake ENS 471962011-08-25T05:18:00025 August 2011 05:18:00 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Unusual Event Declared Due to an Aftershock Earthquake ENS 471812011-08-23T18:03:00023 August 2011 18:03:00 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Alert Declared Due to an Earthquake in the Area and a Loss of Offsite Power ENS 411042004-10-08T17:55:0008 October 2004 17:55:00 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Unusual Event Due to Actuation of Carbon Dioxide Fire Suppression System in Turbine Building 2022-09-04T23:39:00 | |
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