ENS 48770
ENS Event | |
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15:54 Feb 19, 2013 | |
Title | Oconee Alert and Notification System Sirens Out of Service |
Event Description | Event: At 1400 EST on 2/19/2013, Oconee Nuclear Station (ONS) Emergency Preparedness (EP) was notified that the 65 Oconee Alert and Notification System sirens (65 is the total number of sirens within the ONS 10 mile Emergency Planning Zone) were found to be non-functional at 1054 EST during weekly testing on 2/19/2013. Oconee and Pickens County Emergency Management have been notified and will conduct 'Route Alerting' should ONS experience an emergency event that would normally require siren activation for notifying the public. Route Alerting, a method of backup alerting, is an approved FEMA process and is documented in the Emergency-Plan of both counties.
Initial Safety Significance: None. A pre-planned alternate process for notifying the public was put in place immediately and will remain in place until siren repair and testing are completed. Corrective Action(s): An investigation is in progress to determine the cause of the siren system failure. Appropriate repairs will be made and testing conducted once the cause is determined. ONS will notify the NRC when the sirens are returned to service. The ONS NRC Resident Inspector has been notified of this issue." The licensee has also notified state authorities and the appropriate county authorities as indicated in the event description.
The ONS Siren control systems were recovered and the ONS Alert and Notification System was retested and fully returned to service as of 1040 EST on 2/20/2013. Oconee and Pickens County Emergency Management Division (EMD), South Carolina EMD, and the ONS NRC Senior Resident Inspector were notified of the return of the systems to service. The systems were restored after correcting issues associated with the computer system for the sirens. An investigation is in progress to determine the cause of the event. R2DO (McCoy) notified. |
Where | |
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Oconee South Carolina (NRC Region 2) | |
Reporting | |
10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | |
Time - Person (Reporting Time:+1.85 h0.0771 days <br />0.011 weeks <br />0.00253 months <br />) | |
Opened: | Bob Meixell 17:45 Feb 19, 2013 |
NRC Officer: | Bill Huffman |
Last Updated: | Feb 20, 2013 |
48770 - 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 %) |
Unit 3 | |
---|---|
Reactor critical | Critical |
Scram | No |
Before | Power Operation (100 %) |
After | Power Operation (100 %) |
WEEKMONTHYEARENS 547712020-07-10T13:00:00010 July 2020 13:00:00
[Table view]10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Planned Common Emergency Operations Facility Maintenance ENS 545092020-02-03T14:15:0003 February 2020 14:15:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Emergency Assessment Capability Due to Planned Tsc and Osc Upgrades ENS 495112013-11-07T17:00:0007 November 2013 17:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Taken Out of Service for Planned Maintenance ENS 487702013-02-19T15:54:00019 February 2013 15:54:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Oconee Alert and Notification System Sirens Out of Service ENS 484072012-10-15T10:56:00015 October 2012 10:56:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Area Radiation Monitor Used for Emergency Assessment Failed ENS 482842012-09-06T00:06:0006 September 2012 00:06:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Inoperable Accident Radiation Monitors ENS 482652012-09-02T16:00:0002 September 2012 16:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Planned Outage of Emergency Operations Facility ENS 482642012-09-02T02:30:0002 September 2012 02:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Radiation Monitor Declared Inoperable ENS 422062005-12-15T14:30:00015 December 2005 14:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Emergency Siren Power ENS 410502004-09-17T14:30:00017 September 2004 14:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Siren Capability 2020-07-10T13:00:00 | |