ENS 42871
ENS Event | |
---|---|
04:00 Oct 2, 2006 | |
Title | Offsite Sirens Inoperable for Planned Maintenance |
Event Description | Surry Early Warning System (EWS) siren activation system was briefly inoperable from 14:26 hours to 16:28 hours on October 2, 2006, for antenna replacement preventive maintenance due to a degrading connector.
This event is reportable in accordance with 10CFR50.72(b)(3)(xiii), any event that results in a major loss of offsite communications capability, (e.g., offsite notification system). This preventive maintenance was coordinated in advance with offsite agencies for compensatory measure purposes (backup route alerting within 45 minutes). Return to service testing has verified 68 of 68 sirens are operable (100 %). The current availability of the EWS no longer constitutes a major loss of off site communication capability pursuant to 10CFR50.72(b)(3)(xiii). Information related to the return to service of these sirens has been transmitted to the offsite agencies. This is the final report that will be issued relative to siren system restoration efforts following this preventive maintenance. Normal siren system status monitoring practices will remain in effect going forward. The licensee notified the NRC Resident Inspector. |
Where | |
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Surry Virginia (NRC Region 2) | |
Reporting | |
10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | |
Time - Person (Reporting Time:+13.48 h0.562 days <br />0.0802 weeks <br />0.0185 months <br />) | |
Opened: | James Holloway 17:29 Oct 2, 2006 |
NRC Officer: | Jason Kozal |
Last Updated: | Oct 2, 2006 |
42871 - NRC Website
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Unit 1 | |
---|---|
Reactor critical | Critical |
Scram | No |
Before | Power Operation (100 %) |
After | Power Operation (100 %) |
Unit 2 | |
---|---|
Reactor critical | Critical |
Scram | No |
Before | Power Operation (100 %) |
After | Power Operation (100 %) |
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 | |