ENS 57553
ENS Event | |
|---|---|
05:05 Feb 18, 2025 | |
| Title | Loss of Communication Capability |
| Event Description | The following information was provided by the licensee via phone and email:
At 0005 EST on February 18, 2025, the operations staff identified network issues. At 0014, Surry operations staff contacted the North Anna Power Station (NAPS) Shift Technical Advisor (STA) to inform NAPS that they had lost Dominion Energy Emergency Notification System (DEENS) capability and could not utilize the backup Emergency Response Organization (ERO) activation phone number. NAPS operations staff then confirmed that they had also lost DEENS and the ability to activate the ERO with the backup phone number. At 0400, NAPS was provided an additional phone number that can be utilized to have an Everbridge operator activate the ERO remotely. Corporate IT has been notified and is investigating. The loss of ERO activation capability is reportable per 10 CFR 50.72 (b)(3)(xiii), any event that results in a major loss of offsite communications capability. The external network access and DEENS were restored at 0720 on February 18, 2025. The NRC Resident Inspector has been notified.
The following information was provided by the licensee via phone and email: It has since been determined that the [backup] phone number provided at 0400 would not have worked to activate the ERO. However, the network issues were resolved at approximately 0700 when DEENS capability was restored. The NRC Resident Inspector has been notified. Notified R2DO (Penmetsa) |
| Where | |
|---|---|
North Anna  Virginia (NRC Region 2) | |
| Reporting | |
| 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | |
| Time - Person (Reporting Time:+2.08 h0.0867 days <br />0.0124 weeks <br />0.00285 months <br />) | |
| Opened: | Nicholas Wilson 07:10 Feb 18, 2025 |
| NRC Officer: | Adam Koziol |
| Last Updated: | Feb 19, 2025 |
| 57553 - 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 575532025-02-18T05:05:00018 February 2025 05:05:00
[Table view]10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Communication Capability ENS 515572015-11-20T13:23:00020 November 2015 13:23:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Inoperable Vent Stack Radiation Monitor ENS 496722013-12-23T13:23:00023 December 2013 13:23:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Communications with Virginia State Eoc Due to Power Outage ENS 467512011-04-14T08:00:00014 April 2011 08:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Ventilation System Out of Service for Maintenance ENS 466762011-03-15T15:31:00015 March 2011 15:31:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Power to Technical Support Center Ventilation System ENS 460392010-06-23T13:10:00023 June 2010 13:10:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Early Warning Siren Test Failure ENS 460132010-06-16T12:59:00016 June 2010 12:59:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Early Warning System Found Non-Responsive During Testing ENS 435462007-08-03T12:55:0003 August 2007 12:55:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Safety Parameter Display System (Spds) Out of Service ENS 424432006-03-22T17:51:00022 March 2006 17:51:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Potential Loss of Communication Sirens ENS 420972005-10-30T05:50:00030 October 2005 05:50:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Spds Unavailable for Greater than One Hour ENS 419002005-08-07T04:00:0007 August 2005 04:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Spds Unavailable for Greater than One Hour ENS 414562005-03-02T17:39:0002 March 2005 17:39:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Emergency Sirens ENS 414262005-02-21T07:50:00021 February 2005 07:50:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Safety Parameter Display System Inoperable for Greater than One Hour ENS 408202004-06-16T13:45:00016 June 2004 13:45:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Emergency Assessment Capability ENS 401792003-09-19T13:30:00019 September 2003 13:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Emergency Siren Capability to the Adverse Weather Conditions 2025-02-18T05:05:00 | |