ENS 50459
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ENS Event | |
|---|---|
17:09 Sep 15, 2014 | |
| Title | Loss of Emergency Siren Activation Capability |
| Event Description | At 1309 Eastern Daylight Time (EDT) on September 15, 2014, it was determined that the ability to activate the thirty-eight (38) emergency sirens within the 10 mile emergency planning zone (EPZ) radius of the plant was lost. Subsequently, activation capability was restored when a loose modem cable was discovered and remedied. By approximately 1450 EDT, the ability to activate the emergency sirens had been satisfactorily tested. Activation capability of the emergency sirens was restored in approximately 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> and 41 minutes. This event is being reported in accordance with 10 CFR 50.72(b)(3)(xiii) as a major loss of communications capability.
This event did not result in any adverse impact to the health and safety of the public. The Brunswick Nuclear Plant and State of North Carolina Emergency Response Plans include back-up processes to provide warning to affected areas, if required, in the event of the loss of sirens. The cause of the loose modem cable will be investigated. The NRC Senior Resident [Inspector] has been notified. |
| Where | |
|---|---|
Brunswick  North Carolina (NRC Region 2) | |
| Reporting | |
| 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | |
| Time - Person (Reporting Time:+0.8 h0.0333 days <br />0.00476 weeks <br />0.0011 months <br />) | |
| Opened: | John Miller 17:57 Sep 15, 2014 |
| NRC Officer: | Jeff Rotton |
| Last Updated: | Sep 15, 2014 |
| 50459 - 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 547722020-07-10T13:00:00010 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 520692016-07-06T22:07:0006 July 2016 22:07:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Offsite Notification to the United States Department of Transportation ENS 504592014-09-15T17:09:00015 September 2014 17:09:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Emergency Siren Activation Capability ENS 503552014-08-12T08:32:00012 August 2014 08:32:00 10 CFR 50.72(a)(1)(i), Emergency Class Declaration, 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Unusual Event for a Halon Release Near the Tsc and Eof ENS 483622012-10-01T12:45:0001 October 2012 12:45:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center (Tsc) / Emergency Operations Facility (Eof) Out-Of-Service for Planned Maintenance ENS 480322012-06-17T17:30:00017 June 2012 17:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Planned Outage of Erfis, Spds, Erds, and Ppc ENS 480192012-06-12T21:57:00012 June 2012 21:57:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of the Plant Process Computer System ENS 473112011-10-01T20:00:0001 October 2011 20:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Erds Connectivity Due to a Computer Issue ENS 472152011-08-29T16:00:00029 August 2011 16:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Emergency Response Data System Out of Service for Maintenance ENS 458132010-04-05T03:34:0005 April 2010 03:34:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Emergency Siren Activation Capability ENS 427242006-07-24T21:00:00024 July 2006 21:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss and Restoration of Spds System ENS 419912005-09-14T12:32:00014 September 2005 12:32:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Offsite Emergency Preparedness Sirens ENS 419262005-08-17T20:15:00017 August 2005 20:15:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Offsite Emergency Sirensout of Service Due to Severe Weather ENS 409552004-08-14T16:25:00014 August 2004 16:25:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Several Offsite Emergency Preparedness Sirens Due to Adverse Weather ENS 403152003-11-12T15:03:00012 November 2003 15:03:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Emergency Siren Test Failure 2020-07-10T13:00:00 | |
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