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The team identified an apparent violation … The team identified an apparent violation of 10 CFR Part 50, Appendix B, Criterion XVI, Corrective Actions, for the failure to identify and correct the cause of erratic emergency diesel generator K-1 relay operation prior to installation of the relay on July 26, 2006. This performance deficiency contributed to the Unit 3 Train A emergency diesel generator being inoperable between September 4 and 22, 2006, and a failure on September 22, 2006. Immediate corrective actions included inspection, cleaning, and performing mechanical adjustments, as appropriate, on all emergency diesel generator K-1 relays. This issue was entered into the licensees corrective action program as Condition Report/Disposition Request 2926830. The finding is greater than minor because it is associated with the equipment performance cornerstone objective to ensure the availability, reliability, and capability of systems that respond to initiating events to prevent undesirable consequences. Using NRC Inspection Manual Chapter 0609, Significance Determination Process, Phase 1 Worksheet, a Phase 2 evaluation was required because the finding resulted in the loss of the safety function of the Unit 3 Train A emergency diesel generator for greater than the Technical Specification allowed outage time. The Phase 2 evaluation concluded that the finding was of low to moderate safety significance. A Phase 3 preliminary significance determination analysis also determined the finding was of low to moderate safety significance. The cause of this finding is related to the crosscutting element of problem identification and resolution in that the failure to fully evaluate and implement adequate corrective maintenance actions for the Unit 3 Train A emergency diesel generator resulted in the emergency diesel generator being inoperable for 18 days (Section 3.0).eing inoperable for 18 days (Section 3.0). +
23:59:59, 31 December 2006 +
23:59:59, 31 December 2006 +
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>.
21:47:57, 8 October 2017 +
23:59:59, 31 December 2006 +