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This report is a 60-day telephone notifica … This report is a 60-day telephone notification in lieu of written LER being made under 10CFR50.73(a)(2)(iv)(A) and 10CFR50.73(a)(1). The event was an invalid actuation of the Unit 1 turbine driven auxiliary feedwater (TDAFW) pump.</br>At 0509 EST on 11/14/2010, during testing of the 1B main feedwater pump (MFP), the TDAFW pump started and the motor driven auxiliary feedwater (MDAFW) valves received a signal to go to automatic control. An investigation determined that during previous testing of the 1A MFP, the 1A MFP trip relay (RTT-1) remained stuck in the trip condition. The stuck relay on the 1A MFP and the trip test on 1B MFP made up the logic for a TDAFW and MDAFW start from both MFPs tripped signal. The 1A MFP trip relay was replaced. </br>The Unit 1A and B train MDAFW and TDAFW system received the actuation signal. The 1A and 1B MDAFW pumps were already in service at the time for Mode 3 operation. Actual plant conditions did not exist that required an automatic start of the auxiliary feedwater system. Therefore, this actuation was invalid. A complete train actuation occurred and the auxiliary feedwater system functioned successfully.</br>The licensee has notified the NRC Resident Inspector.e has notified the NRC Resident Inspector. +
10:09:00, 14 November 2010 +
46,504 +
21:33:00, 22 December 2010 +
10:09:00, 14 November 2010 +
This report is a 60-day telephone notifica … This report is a 60-day telephone notification in lieu of written LER being made under 10CFR50.73(a)(2)(iv)(A) and 10CFR50.73(a)(1). The event was an invalid actuation of the Unit 1 turbine driven auxiliary feedwater (TDAFW) pump.</br>At 0509 EST on 11/14/2010, during testing of the 1B main feedwater pump (MFP), the TDAFW pump started and the motor driven auxiliary feedwater (MDAFW) valves received a signal to go to automatic control. An investigation determined that during previous testing of the 1A MFP, the 1A MFP trip relay (RTT-1) remained stuck in the trip condition. The stuck relay on the 1A MFP and the trip test on 1B MFP made up the logic for a TDAFW and MDAFW start from both MFPs tripped signal. The 1A MFP trip relay was replaced. </br>The Unit 1A and B train MDAFW and TDAFW system received the actuation signal. The 1A and 1B MDAFW pumps were already in service at the time for Mode 3 operation. Actual plant conditions did not exist that required an automatic start of the auxiliary feedwater system. Therefore, this actuation was invalid. A complete train actuation occurred and the auxiliary feedwater system functioned successfully.</br>The licensee has notified the NRC Resident Inspector.e has 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>.
00:00:00, 22 December 2010 +
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>.
02:08:09, 2 March 2018 +
21:33:00, 22 December 2010 +
false +
false +
38.475 d (923.4 hours, 5.496 weeks, 1.265 months) +
10:09:00, 14 November 2010 +
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.