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System Affected : Steam and Feedwater Rupt … System Affected : Steam and Feedwater Rupture Control System (SFRCS)</br>Actuation / Initiator Affected: Main Steam Line Rupture on Steam Generator </br>Effect of event on plant in current Mode - None</br>Actions Taken or planned: Declared SFRCS Actuation Channels 1 and 2 inoperable. Will track as a Mode 3 restraint against T.S. 3.3.2.2 (SFRCS Instrumentation). Will resolve, correct and retest prior to entry into Mode 3.</br>Discovered SFRCS Logic Channel 1 block upon restoration and repowering after maintenance activities on 10/16/03. After discussions with Engineering Department representatives it has been determined that a design issue exists with the SFRCS system where it would be possible that SFRCS Channels 1 and 2 low pressure trips could be blocked during a scenario where a Main Steam Line Rupture would be followed by a loss of off-site power. This would result in the potential that the OTSG (once through steam generators) with the main steam line rupture would be fed by the AFW system. This requires an 8 hour notification to the NRC per 10CFR50.72(b)(3)(ii)(B).</br>The licensee notified the NRC resident inspector.ensee notified the NRC resident inspector. +
13:00:00, 17 October 2003 +
11:54:00, 17 October 2003 +
13:00:00, 17 October 2003 +
System Affected : Steam and Feedwater Rupt … System Affected : Steam and Feedwater Rupture Control System (SFRCS)</br>Actuation / Initiator Affected: Main Steam Line Rupture on Steam Generator </br>Effect of event on plant in current Mode - None</br>Actions Taken or planned: Declared SFRCS Actuation Channels 1 and 2 inoperable. Will track as a Mode 3 restraint against T.S. 3.3.2.2 (SFRCS Instrumentation). Will resolve, correct and retest prior to entry into Mode 3.</br>Discovered SFRCS Logic Channel 1 block upon restoration and repowering after maintenance activities on 10/16/03. After discussions with Engineering Department representatives it has been determined that a design issue exists with the SFRCS system where it would be possible that SFRCS Channels 1 and 2 low pressure trips could be blocked during a scenario where a Main Steam Line Rupture would be followed by a loss of off-site power. This would result in the potential that the OTSG (once through steam generators) with the main steam line rupture would be fed by the AFW system. This requires an 8 hour notification to the NRC per 10CFR50.72(b)(3)(ii)(B).</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>.
00:00:00, 17 October 2003 +
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>.
02:24:57, 2 March 2018 +
11:54:00, 17 October 2003 +
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.
false +
false +
-0.0458 d (-1.1 hours, -0.00655 weeks, -0.00151 months) +
13:00:00, 17 October 2003 +
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.