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The following information was provided by … The following information was provided by the licensee via phone and email:</br>At 0913 CDT, on October 6, 2025, a partial actuation of the division 1 emergency diesel generator (DG1) occurred during the performance of the 4160-volt bus 1F undervoltage relay channel functional test. The DG1 automatic start in the emergency mode was the result of the inadvertent contact between a jumper and another component. However, due to the test configuration, the output breaker for DG 1 did not close and pick up the load of the 4160-volt bus 1F since no actual undervoltage condition was present. DG1 components functioned as expected in response. Following the actuation, DG1 was restored to a standby lineup in accordance with plant procedures. </br>This event is considered an invalid system actuation reportable under 10 CFR 50.73(a)(2)(iv)(A). The actuation was not initiated in response to actual plant conditions or parameters and was not a manual initiation. Therefore, in accordance with 10 CFR 50.73(a)(1), this telephone notification is provided within 60 days after discovery of the event instead of submitting a written licensee event report. The NRC Resident lnspector has been notified. NRC Resident lnspector has been notified. +
15:13:00, 6 October 2025 +
16:55:00, 2 December 2025 +
15:13:00, 6 October 2025 +
The following information was provided by … The following information was provided by the licensee via phone and email:</br>At 0913 CDT, on October 6, 2025, a partial actuation of the division 1 emergency diesel generator (DG1) occurred during the performance of the 4160-volt bus 1F undervoltage relay channel functional test. The DG1 automatic start in the emergency mode was the result of the inadvertent contact between a jumper and another component. However, due to the test configuration, the output breaker for DG 1 did not close and pick up the load of the 4160-volt bus 1F since no actual undervoltage condition was present. DG1 components functioned as expected in response. Following the actuation, DG1 was restored to a standby lineup in accordance with plant procedures. </br>This event is considered an invalid system actuation reportable under 10 CFR 50.73(a)(2)(iv)(A). The actuation was not initiated in response to actual plant conditions or parameters and was not a manual initiation. Therefore, in accordance with 10 CFR 50.73(a)(1), this telephone notification is provided within 60 days after discovery of the event instead of submitting a written licensee event report. The NRC Resident lnspector has been notified. NRC Resident lnspector 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, 2 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>.
12:20:10, 4 December 2025 +
16:55:00, 2 December 2025 +
true +
false +
57.029 d (1,368.7 hours, 8.147 weeks, 1.875 months) +
15:13:00, 6 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.