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On May 4, 2015 with Unit 1 in Mode 1 at 10 … On May 4, 2015 with Unit 1 in Mode 1 at 100 percent power, during performance of the 'A' channel Auxiliary Feedwater Actuation System (AFAS) monthly functional test, an invalid 'A' channel AFAS actuation occurred. The monthly functional test resulted with AFAS-1 in a half trip condition. Due to a poor contact on a manual actuation switch, a pathway was dropped out causing the partial AFAS actuation to occur. The faulty mechanical switch was replaced and the post maintenance testing was satisfactory.</br>The partial AFAS actuation resulted in the successful start of 'A' AFW electric driven pump and the opening of its motor control valve, feeding the 'A' steam generator. The system responded to the invalid actuation as designed.</br>In accordance with 10 CFR 50.73(a)(1), this notification of the invalid actuation is provided in lieu of a written LER.</br>The licensee notified the NRC Resident Inspector.ensee notified the NRC Resident Inspector. +
00:27:00, 5 May 2015 +
51,195 +
10:39:00, 1 July 2015 +
00:27:00, 5 May 2015 +
On May 4, 2015 with Unit 1 in Mode 1 at 10 … On May 4, 2015 with Unit 1 in Mode 1 at 100 percent power, during performance of the 'A' channel Auxiliary Feedwater Actuation System (AFAS) monthly functional test, an invalid 'A' channel AFAS actuation occurred. The monthly functional test resulted with AFAS-1 in a half trip condition. Due to a poor contact on a manual actuation switch, a pathway was dropped out causing the partial AFAS actuation to occur. The faulty mechanical switch was replaced and the post maintenance testing was satisfactory.</br>The partial AFAS actuation resulted in the successful start of 'A' AFW electric driven pump and the opening of its motor control valve, feeding the 'A' steam generator. The system responded to the invalid actuation as designed.</br>In accordance with 10 CFR 50.73(a)(1), this notification of the invalid actuation is provided in lieu of a written LER.</br>The licensee notified the NRC Resident Inspector.ensee notified the NRC Resident Inspector. +
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>.
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00:00:00, 1 July 2015 +
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>.
22:17:35, 24 September 2017 +
10:39:00, 1 July 2015 +
true +
false +
57.425 d (1,378.2 hours, 8.204 weeks, 1.888 months) +
00:27:00, 5 May 2015 +
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.