Browse wiki
Jump to navigation
Jump to search
100 +
The following information was provided by … The following information was provided by the licensee via phone and email:</br>This sixty-day telephone notification is being made per 10 CFR 50.73(a)(2)(iv)(A) under the provision 10 CFR 50.73(a)(1), as an invalid actuation of containment isolation valves in more than one system. On October 11, 2025, while in mode 5 for a refueling outage, an invalid actuation signal occurred while performing preventative maintenance on a 120V AC inverter. </br>At the time of the event, one channel of the refuel floor exhaust (RFE) high radiation monitor was tripped due to a scheduled electrical bus outage. This electrical bus outage, in combination with the unexpected loss of power from the 120V AC inverter on another channel, caused the actuation of containment isolation valves in more than one system. The actuation was not the result of an actual plant condition and, therefore, is invalid. </br>The containment isolation valves functioned as designed for the actuation signal received. There was no impact on the health and safety of the public or plant personnel.</br>The NRC Resident Inspector has been notified. NRC Resident Inspector has been notified. +
10:09:00, 11 October 2025 +
58,075 +
15:42:00, 9 December 2025 +
10:09:00, 11 October 2025 +
The following information was provided by … The following information was provided by the licensee via phone and email:</br>This sixty-day telephone notification is being made per 10 CFR 50.73(a)(2)(iv)(A) under the provision 10 CFR 50.73(a)(1), as an invalid actuation of containment isolation valves in more than one system. On October 11, 2025, while in mode 5 for a refueling outage, an invalid actuation signal occurred while performing preventative maintenance on a 120V AC inverter. </br>At the time of the event, one channel of the refuel floor exhaust (RFE) high radiation monitor was tripped due to a scheduled electrical bus outage. This electrical bus outage, in combination with the unexpected loss of power from the 120V AC inverter on another channel, caused the actuation of containment isolation valves in more than one system. The actuation was not the result of an actual plant condition and, therefore, is invalid. </br>The containment isolation valves functioned as designed for the actuation signal received. There was no impact on the health and safety of the public or plant personnel.</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>.
00:00:00, 9 December 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, 11 December 2025 +
15:42:00, 9 December 2025 +
false +
false +
59.19 d (1,420.55 hours, 8.456 weeks, 1.946 months) +
10:09:00, 11 October 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.