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The inspectors identified a Green non-cite … The inspectors identified a Green non-cited violation (NCV) of 10 CFR 50.65 paragraph (a)(4) for Entergy\'s failure to manage a Yellow risk condition for an unplanned half-scram. Specifically, Entergy performed an incorrect risk assessment and thereby did not recognize an increase in risk to a Yellow condition had occurred, and as a result Entergy did not specify any risk management actions. Entergy entered this issue into their corrective action program, specified corrective actions to upgrade this risk to Yellow, and implemented appropriate risk management actions</br></br>This finding was determined to be more than minor because Entergy did not consider the increase in Initiating Event likelihood where the outcome of the overall elevated plant risk put the plant into a higher risk management category, and thereby required additional risk management actions. In addition, the finding affected the Human Performance attribute of the Initiating Events cornerstone\'s objective to limit the likelihood of those events that upset plant stability and challenge critical safety functions. The inspectors performed an evaluation in accordance with IMC 0609, Significance Determination Process, Appendix K, Maintenance Risk Assessment and Risk Management Significance Determination Process, because the finding related to Entergy\'s assessment and management of risk. The finding was determined to be of very low safety significance (Green) because the Incremental Core Damage Probability Deficit for the medium trip risk for the duration of the activity was less than 1.0 E-6 per year (approximately 1.0 E-9 per year). The inspectors determined that this finding had a cross-cutting aspect in the Human Performance cross-cutting area, Decision Making component, because when faced with an unexpected plant condition, Entergy did not correctly implement its systematic process to make a risk-significant decision.ocess to make a risk-significant decision. +
23:59:59, 30 September 2010 +
23:59:59, 30 September 2010 +
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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>.
00:40:09, 21 February 2018 +
23:59:59, 30 September 2010 +