ENS 40181
ENS Event | |
|---|---|
15:30 Sep 19, 2003 | |
| Title | Loss of Sirens |
| Event Description | A poll of the Surry EWS sirens was conducted to determine operability of the siren system (Reference Hurricane Response Plan - Nuclear, Section 5.6). The poll was conducted from the back-up status logger at Innsbrook due to the unavailability of the primary status logger in the Surry LEOF (see Plant Issue - S-2003-4152).
45 of the 67 sirens expected to respond to the siren polling are considered inoperable at this time due to power failure as a result of Hurricane Isabel (the status of 2 of these was indeterminate). 22 of the 67 sirens responded satisfactorily and are considered operational. This is a reportable event per VPAP - 2802 Attachment 3 d. Early Warning System second bullet "More than 25 percent of all sirens are unavailable" and the third bullet "The capability to alert a large segment of the population does not exist. This discrepancy was discovered at 1130 EDT on 9/19/03. The licensee notified the NRC Resident Inspector, as well as state and local government officials.
Currently Surry Unit 1 is at 100% power and Unit 2 is in Cold Shutdown. Surry EWS sirens have been returned to operable status on September 29, 2003 following repairs due to weather related effects of a Hurricane Isabel. Presently 63 of 67 sirens have been returned to service (94%). All sirens located within the 5 miles portion of the EPZ are operable. The current availability of the EWS no longer constitutes a major loss of emergency assessment capability, offsite response capability, or offsite communication capability pursuant to 10 CFR50.72(b)(3)(xiii). Information related to the return to service of these sirens is being transmitted to the State of Virginia and FEMA. This is the final report that will be issued relative to siren system restoration efforts following Hurricane Isabel. Normal siren system status monitoring practices will remain in effect going forward." R2DO (Mark Lesser) notified. The NRC Resident Inspector was notified of this update by the licensee. |
| Where | |
|---|---|
Surry  Virginia (NRC Region 2) | |
| Reporting | |
| 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | |
| Time - Person (Reporting Time:+0.25 h0.0104 days <br />0.00149 weeks <br />3.4245e-4 months <br />) | |
| Opened: | Duane Shepheard 15:45 Sep 19, 2003 |
| NRC Officer: | Eric Thomas |
| Last Updated: | Sep 29, 2003 |
| 40181 - NRC Website
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Unit 1 | |
|---|---|
| Reactor critical | Not Critical |
| Scram | No |
| Before | Hot Shutdown (0 %) |
| After | Hot Shutdown (0 %) |
Unit 2 | |
|---|---|
| Reactor critical | Not Critical |
| Scram | No |
| Before | Hot Shutdown (0 %) |
| After | Hot Shutdown (0 %) |
WEEKMONTHYEARENS 496732013-12-23T13:28:00023 December 2013 13:28:00
[Table view]10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Communications with Virginia State Eoc Due to Power Outage ENS 459862010-06-08T13:48:0008 June 2010 13:48:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(iv)(A), System Actuation, 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness, 10 CFR 50.72(b)(2)(iv)(A), System Actuation - ECCS Discharge Automatic Reactor Trip with Safety Injection Due to Loss of Vital Ac Bus ENS 440542008-03-12T09:00:00012 March 2008 09:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Interruption to Ens Telephone Service ENS 428852006-10-07T17:40:0007 October 2006 17:40:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Site Access Road Flooded ENS 428712006-10-02T04:00:0002 October 2006 04:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Offsite Sirens Inoperable for Planned Maintenance ENS 415332005-03-28T19:21:00028 March 2005 19:21:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Planned Outage of Spds Due to System Upgrade ENS 406982004-04-22T14:45:00022 April 2004 14:45:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Safety Parameter Display System (Spds) Declared Inoperable ENS 401812003-09-19T15:30:00019 September 2003 15:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Sirens 2013-12-23T13:28:00 | |