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The following information was provided by … The following information was provided by the licensee via phone and email:</br>At approximately 2320 EST on 02/17/2025, it was discovered that external network access was unavailable, to include access to DEENS (Dominion Energy Emergency Notification System) rendering the system non-functional. Subsequently, the backup method for activating the station ERO (Emergency Response Organization) was attempted and was unable to be verified. Therefore, neither the primary nor backup methods for activating the site ERO were available. Corporate IT has been notified and is investigating. (Control room staff) contacted the North Anna Power Station and verified similar issues with DEENS availability and backup ERO activation.</br>On 02/18/2025, at 0403, an additional backup ERO activation phone number was provided (and documented in a standing order) in the event that the backup number listed in attachment 7 of EP-AA-CSD-201 (Notifications and Communications) is not available.</br>This event is reportable in accordance with 10CFR50.72(b)(3)(xiii), any event that results in a major loss of offsite communications capability.</br>The external network access and DEENS were restored on 02/18/2025 at 0725.</br>The NRC Resident Inspector has been notified.</br>* * * UPDATE ON 2/19/2025 AT 1107 EST FROM FORREST COPELAND TO SAMUEL COLVARD * * *</br>It has since been determined that the phone number provided at 0400 on 2/18/2025, would not have worked to activate the ERO. However, the network issues were resolved at approximately 0700 on 2/18/2025 when DEENS capability was restored.</br>Notified R2DO (Penmetsa).ty was restored.
Notified R2DO (Penmetsa). +
04:20:00, 18 February 2025 +
57,552 +
06:00:00, 18 February 2025 +
04:20:00, 18 February 2025 +
The following information was provided by … The following information was provided by the licensee via phone and email:</br>At approximately 2320 EST on 02/17/2025, it was discovered that external network access was unavailable, to include access to DEENS (Dominion Energy Emergency Notification System) rendering the system non-functional. Subsequently, the backup method for activating the station ERO (Emergency Response Organization) was attempted and was unable to be verified. Therefore, neither the primary nor backup methods for activating the site ERO were available. Corporate IT has been notified and is investigating. (Control room staff) contacted the North Anna Power Station and verified similar issues with DEENS availability and backup ERO activation.</br>On 02/18/2025, at 0403, an additional backup ERO activation phone number was provided (and documented in a standing order) in the event that the backup number listed in attachment 7 of EP-AA-CSD-201 (Notifications and Communications) is not available.</br>This event is reportable in accordance with 10CFR50.72(b)(3)(xiii), any event that results in a major loss of offsite communications capability.</br>The external network access and DEENS were restored on 02/18/2025 at 0725.</br>The NRC Resident Inspector has been notified.</br>* * * UPDATE ON 2/19/2025 AT 1107 EST FROM FORREST COPELAND TO SAMUEL COLVARD * * *</br>It has since been determined that the phone number provided at 0400 on 2/18/2025, would not have worked to activate the ERO. However, the network issues were resolved at approximately 0700 on 2/18/2025 when DEENS capability was restored.</br>Notified R2DO (Penmetsa).ty was restored.
Notified R2DO (Penmetsa). +
Has query"Has query" is a predefined property that represents meta information (in form of a <a rel="nofollow" class="external text" href="https://www.semantic-mediawiki.org/wiki/Subobject">subobject</a>) about individual queries and is provided by <a rel="nofollow" class="external text" href="https://www.semantic-mediawiki.org/wiki/Help:Special_properties">Semantic MediaWiki</a>.
100 +
00:00:00, 19 February 2025 +
Modification date"Modification date" is a predefined property that corresponds to the date of the last modification of a subject and is provided by <a rel="nofollow" class="external text" href="https://www.semantic-mediawiki.org/wiki/Help:Special_properties">Semantic MediaWiki</a>.
12:20:08, 20 February 2025 +
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0.0696 d (1.67 hours, 0.00994 weeks, 0.00229 months) +
04:20:00, 18 February 2025 +
URL"URL" is a <a href="/Special:Types/URL" title="Special:Types/URL">type</a> and predefined property provided by <a rel="nofollow" class="external text" href="https://www.semantic-mediawiki.org/wiki/Help:Special_properties">Semantic MediaWiki</a> to represent URI/URL values.