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On 4/28/05 Grand Gulf provided a call in o … On 4/28/05 Grand Gulf provided a call in on an issue with (two) secondary containment isolation valves on the Main Steam Line drain system. (See EN-41645)</br>A preliminary detailed review of similar valves has been completed. An additional concern with the Reactor Core Isolation Cooling (RCIC) full flow test line was noted. Specifically preliminary engineering evaluation indicates that during full flow test with flow to the Condensate Storage Tank concurrent with a high drywell pressure secondary containment isolation signal the differential pressure across the valves may prevent adequate design bases closure. Pending further evaluation this issue is conservatively considered reportable under 10CFR50.72(B)(3)(v)(d). Testing of Reactor Core Isolation Cooling with return to the Condensate Storage Tank has been suspended until resolution of this issue.</br>The licensee notified the NRC Resident Inspector.ensee notified the NRC Resident Inspector. +
06:27:00, 29 April 2005 +
09:55:00, 29 April 2005 +
06:27:00, 29 April 2005 +
On 4/28/05 Grand Gulf provided a call in o … On 4/28/05 Grand Gulf provided a call in on an issue with (two) secondary containment isolation valves on the Main Steam Line drain system. (See EN-41645)</br>A preliminary detailed review of similar valves has been completed. An additional concern with the Reactor Core Isolation Cooling (RCIC) full flow test line was noted. Specifically preliminary engineering evaluation indicates that during full flow test with flow to the Condensate Storage Tank concurrent with a high drywell pressure secondary containment isolation signal the differential pressure across the valves may prevent adequate design bases closure. Pending further evaluation this issue is conservatively considered reportable under 10CFR50.72(B)(3)(v)(d). Testing of Reactor Core Isolation Cooling with return to the Condensate Storage Tank has been suspended until resolution of this issue.</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, 29 April 2005 +
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>.
22:41:01, 24 September 2017 +
09:55:00, 29 April 2005 +
true +
false +
0.145 d (3.47 hours, 0.0207 weeks, 0.00475 months) +
06:27:00, 29 April 2005 +
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.