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The following information was provided by … The following information was provided by the licensee via phone and email:</br>On 02/18/2025, at 0400 CST, train `C' essential cooling water was declared inoperable for scheduled maintenance. This cascades down to train `C' emergency core cooling system (ECCS), rendering it inoperable. Train `C' essential cooling water was declared operable on 02/18/2025, at 1207; however, train `C' essential chiller remained inoperable due to ongoing maintenance, which renders train `C' ECCS inoperable.</br>On 02/19/2025, at 0324, train `B' ECCS was declared inoperable due to challenging control room habitability. The mitigating strategy of placing high head safety injection pump `1B' in pull to lock was completed at 0749 on 2/19/2025.</br>On 02/19/2025, at 0324, Technical Specification 3.5.2 action `b' was entered due to two trains of ECCS being inoperable. This action requires that at least two trains of ECCS are restored to operability within 1 hour or apply the requirements of the CRMP (Configuration Risk Management Program).</br>On 02/19/2025, at 0424, the CRMP was entered based on two ECCS trains remaining inoperable for longer than 1 hour.</br>This condition resulted in the inoperability of two of the three safety trains required for the accident mitigating function including: high head safety injection, low head safety injection, and containment spray. This is an 8-hour reportable condition per 10CFR50.72(b)(3)(v)(D) because it could affect the ability to mitigate the consequences of an accident.</br>Unit 1 remains in mode 1 at 100 percent power. The NRC Resident Inspector has been notified.</br>The following additional information was obtained from the licensee in accordance with Headquarters Operations Officers Report Guidance:</br>With two ECCS trains inoperable, the licensee will enter a shutdown technical specification action statement on 3/13/2025.ecification action statement on 3/13/2025. +
09:24:00, 19 February 2025 +
11:36:00, 19 February 2025 +
09:24:00, 19 February 2025 +
The following information was provided by … The following information was provided by the licensee via phone and email:</br>On 02/18/2025, at 0400 CST, train `C' essential cooling water was declared inoperable for scheduled maintenance. This cascades down to train `C' emergency core cooling system (ECCS), rendering it inoperable. Train `C' essential cooling water was declared operable on 02/18/2025, at 1207; however, train `C' essential chiller remained inoperable due to ongoing maintenance, which renders train `C' ECCS inoperable.</br>On 02/19/2025, at 0324, train `B' ECCS was declared inoperable due to challenging control room habitability. The mitigating strategy of placing high head safety injection pump `1B' in pull to lock was completed at 0749 on 2/19/2025.</br>On 02/19/2025, at 0324, Technical Specification 3.5.2 action `b' was entered due to two trains of ECCS being inoperable. This action requires that at least two trains of ECCS are restored to operability within 1 hour or apply the requirements of the CRMP (Configuration Risk Management Program).</br>On 02/19/2025, at 0424, the CRMP was entered based on two ECCS trains remaining inoperable for longer than 1 hour.</br>This condition resulted in the inoperability of two of the three safety trains required for the accident mitigating function including: high head safety injection, low head safety injection, and containment spray. This is an 8-hour reportable condition per 10CFR50.72(b)(3)(v)(D) because it could affect the ability to mitigate the consequences of an accident.</br>Unit 1 remains in mode 1 at 100 percent power. The NRC Resident Inspector has been notified.</br>The following additional information was obtained from the licensee in accordance with Headquarters Operations Officers Report Guidance:</br>With two ECCS trains inoperable, the licensee will enter a shutdown technical specification action statement on 3/13/2025.ecification action statement on 3/13/2025. +
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>.
12:20:10, 21 February 2025 +
11:36:00, 19 February 2025 +
true +
false +
0.0917 d (2.2 hours, 0.0131 weeks, 0.00301 months) +
09:24:00, 19 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.