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At approximately 9:23 a.m. on March 31, 20 … At approximately 9:23 a.m. on March 31, 2013, Unit 2 experienced a startup transformer 3 lockout due to an electrical fault inside the breaker cabinet for startup transformer 3 to bus 2A1 supply breaker 2A-113. Initial reports to the control room indicated that the door of the feeder breaker appeared to be blown open, and light smoke was observed in the area. This information was documented in the control room logs at 9:25 a.m. Through interviews with responding operators, the team determined that this information was separately reported to the control room multiple times and by different methods. At some time later, another operator looked into the panel and identified damage to the bus bars inside the breaker cabinet. Although not documented in the control room logs, this information was reported to the control room at approximately 10:20 a.m. Operators subsequently declared a Notification of Unusual Event based on a small explosion inside the protected area (HU4) at 10:33 a.m. The team determined that multiple reports had been made to the control room, but the information appeared to be substantially the same as the initial report received at 9:25 a.m. The 9:25 a.m. report was also the only report documented in the control room logs. The team concluded that additional follow-up inspection was required to assess the timeliness of the emergency classification given the information available to the control room operators: Unresolved Item URI 05000368/2013011-07, Timeliness of Emergency Action Level Determination.s of Emergency Action Level Determination. +
23:59:59, 30 June 2013 +
23:59:59, 30 June 2013 +
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>.
00:50:17, 21 February 2018 +
23:59:59, 30 June 2013 +