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The team identified a violation of 10 CFR … The team identified a violation of 10 CFR 50, Appendix R, Section III.G.2, for failure to physically protect or separate cables from fire damage and instead relying on unapproved local manual operator actions. The operator actions were to be accomplished outside the main control room (MCR) and were relied on to achieve and maintain safe shutdown from the MCR during a severe fire in the 3A 4160V ES Switchgear Room or the 3A 480V ES Switchgear Room. This finding is unresolved pending the completion of a significance determination. The finding is greater than minor because it degraded the defense in depth for fire protection and also because it is associated with the protection against external factors attribute and degraded the reactor safety mitigating systems cornerstone objective. The finding adversely affected the reliability and capability of equipment required to achieve and maintain a safe shutdown condition following a severe fire. This finding is not an immediate safety concern because each of the manual actions could be reasonably accomplished and the postulated time line demonstrated that there was sufficient time to perform each action. However, this issue remains unresolved pending further NRC review of the overall complexity and number of the manual actions. The finding is applicable to post-fire safe shutdown from the control room during a fire in the 3A 4160V ES Switchgear Room.a fire in the 3A 4160V ES Switchgear Room. +
23:59:59, 31 March 2005 +
23:59:59, 31 March 2005 +
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>.
00:33:55, 21 February 2018 +
23:59:59, 31 March 2005 +
Unapproved Local Manual Operator Actions Instead of Required Physical Protection or Separation of Cables to Preclude Fire Damage +