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The following information was provided by … The following information was provided by the licensee via phone and email:</br>On September 4, 2025, at 0855 CDT, Grand Gulf Nuclear Station operators discovered the enclosure building roof hatch was unsecured and open approximately 1 inch. This resulted in inoperability of secondary containment. </br>Following discovery, the hatch was immediately closed and latched. Secondary containment operability was restored at 0940 CDT. </br>This event is being reported under 10 CFR 50.72(b)(3)(v)(D) as an event or condition that could have prevented fulfillment of a safety function. </br>The NRC Resident Inspector has been notified. NRC Resident Inspector has been notified. +
13:55:00, 4 September 2025 +
14:40:00, 4 September 2025 +
13:55:00, 4 September 2025 +
The following information was provided by … The following information was provided by the licensee via phone and email:</br>On September 4, 2025, at 0855 CDT, Grand Gulf Nuclear Station operators discovered the enclosure building roof hatch was unsecured and open approximately 1 inch. This resulted in inoperability of secondary containment. </br>Following discovery, the hatch was immediately closed and latched. Secondary containment operability was restored at 0940 CDT. </br>This event is being reported under 10 CFR 50.72(b)(3)(v)(D) as an event or condition that could have prevented fulfillment of a safety function. </br>The NRC Resident Inspector has been notified. NRC Resident Inspector has been notified. +
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, 4 September 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>.
11:20:06, 8 September 2025 +
14:40:00, 4 September 2025 +
Processing error"Processing error" is a predefined property provided by <a rel="nofollow" class="external text" href="https://www.semantic-mediawiki.org/wiki/Help:Special_properties">Semantic MediaWiki</a> and represents errors that appeared in connection with improper value annotations or input processing.
true +
false +
0.0313 d (0.75 hours, 0.00446 weeks, 0.00103 months) +
13:55:00, 4 September 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.