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An NRC identified NCV of 10 CFR 50.65 (b) … An NRC identified NCV of 10 CFR 50.65 (b) was identified for failure to include the Auxiliary Building water-tight doors within the scope of the maintenance rule (MR) monitoring program. During routine plant inspections, the inspectors noticed degraded door seals (excessive hardening of the rubber seal with small chunks missing) and worn hinges on water tight doors located in the Auxiliary Building. The inspectors discovered one Unit 2 door in which the seal area had cracks completely across. The inspectors determined the sealing function assumed in the licensee internal flooding analysis for these doors was challenged. This finding has been entered into the licensees CAP as CR 2009106669. The licensees failure to include the water-tight doors within the scope of their MR program and the subsequent degraded condition of these doors is a performance deficiency. The performance deficiency is more than minor because it adversely affected the equipment performance attribute of the Mitigating System Cornerstone objective to ensure the availability, reliability, and capability of systems responding to initiating events to prevent undesirable consequences (i.e. core damage). This finding was assessed using Phase 1 of IMC 0609, Appendix A, Significance Determination of Reactor Inspection Findings for At-Power Situations, and determined the finding was of very low safety significance (Green) because although it did involve degradation of equipment or function specifically designed to mitigate a flooding event (i.e. flooding barriers), it did not result in a loss of safety function. No cross cutting aspects were identified. No cross cutting aspects were identified +
23:59:59, 30 June 2009 +
23:59:59, 30 June 2009 +
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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E Crowe +, G Kuzo +, Adam Nielsen +, Scott Shaeffer +, Brendan Collins +, Shane Sandal +, Jim Hickey + and Curtis Rapp +
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>.
00:41:16, 29 October 2017 +
E Crowe +, G Kuzo +, Adam Nielsen +, Scott Shaeffer +, Brendan Collins +, Shane Sandal +, Jim Hickey + and Curtis Rapp +
23:59:59, 30 June 2009 +