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The inspectors identified a non-cited viol … The inspectors identified a non-cited violation of 10 CFR 50, Appendix B, Criterion XVI, Corrective Action, for the licensees failure to adequately evaluate and take prompt corrective actions to address a condition adverse to quality related to two Emergency Equipment Cooling Water (EECW) system flow control valves determined to have been throttled below the analyzed 0.125 inch gap for a period of approximately three months. This condition restricted the flow to the cooler due to flow blockage which could have resulted in inoperability of the downstream safety-related Core Spray (CS) pump room heat exchangers. This finding was entered into the licensees corrective action program as PER 257029. The inspectors determined that the licensees failure to promptly address an identified deficiency associated with safety related equipment was a performance deficiency. The performance deficiency was determined to be more than minor because it was associated with the Equipment Performance attribute of the Mitigating Systems cornerstone and adversely affects the cornerstone objective to ensure the availability, reliability, and capability of the Core Spray system to respond to initiating events to prevent undesirable consequences; (i.e., core damage) , since it resulted in 2 valves in the core spray system remaining throttled below their analyzed seat to disc clearance for several months after the licensee became aware of this condition, thus subjecting these valves to an increased likelihood of clogging with debris and affecting the reliability of the system. The inspectors determined that the finding was of very low safety significance because the finding was not a design deficiency, did not result in an actual loss of system or single train function, and was not potentially risk significant due to external events. The inspectors determined that this finding directly involved the cross-cutting area of Problem Identification and Resolution, component of the Corrective Action Program and aspect of Through Evaluation of Identified Problems because the licensee did not perform a thorough evaluation of identified problems such that the resolutions address causes and extent of conditions.s address causes and extent of conditions.
23:59:59, 30 September 2010 +
23:59:59, 30 September 2010 +
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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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>.
21:48:34, 8 October 2017 +
23:59:59, 30 September 2010 +