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At 1135 CDT, during a plant walkdown, it w … At 1135 CDT, during a plant walkdown, it was observed that the battery room doors to the Unit 1 and Unit 2 turbine building bottom gap seals were not in contact with their respective door thresholds. The gap was approximately 0.25 inches. It is necessary for each of the door seals to be in contact with the thresholds for the plant to be in the configuration assumed by the turbine building High Energy Line Break (HELB) flooding evaluation. </br>An analysis was performed of the flood height that would be attained in the battery rooms during a postulated HELB induced flooding event. The result of this analysis was estimated to be a water depth above the limit to maintain operability of safety related components in the battery rooms. This critical flood height would be attained in approximately 30 minutes following a HELB which causes damage to cooling water piping.</br>These postulated water levels could have potentially resulted in a loss of safety function for Unit 1 and Unit 2 components between 1135 and 1250 CDT. </br>The condition was repaired and the battery rooms were declared operable at 1250 CDT.</br>The licensee notified the NRC Resident Inspector.ensee notified the NRC Resident Inspector. +
16:35:00, 9 June 2010 +
45,997 +
20:02:00, 9 June 2010 +
16:35:00, 9 June 2010 +
At 1135 CDT, during a plant walkdown, it w … At 1135 CDT, during a plant walkdown, it was observed that the battery room doors to the Unit 1 and Unit 2 turbine building bottom gap seals were not in contact with their respective door thresholds. The gap was approximately 0.25 inches. It is necessary for each of the door seals to be in contact with the thresholds for the plant to be in the configuration assumed by the turbine building High Energy Line Break (HELB) flooding evaluation. </br>An analysis was performed of the flood height that would be attained in the battery rooms during a postulated HELB induced flooding event. The result of this analysis was estimated to be a water depth above the limit to maintain operability of safety related components in the battery rooms. This critical flood height would be attained in approximately 30 minutes following a HELB which causes damage to cooling water piping.</br>These postulated water levels could have potentially resulted in a loss of safety function for Unit 1 and Unit 2 components between 1135 and 1250 CDT. </br>The condition was repaired and the battery rooms were declared operable at 1250 CDT.</br>The licensee notified the NRC Resident Inspector.ensee notified the NRC Resident Inspector. +
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>.
100 +
00:00:00, 9 June 2010 +
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>.
02:09:30, 2 March 2018 +
20:02:00, 9 June 2010 +
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0.144 d (3.45 hours, 0.0205 weeks, 0.00473 months) +
16:35:00, 9 June 2010 +
URL"URL" is a <a href="/Special:Types/URL" title="Special:Types/URL">type</a> and predefined property provided by <a rel="nofollow" class="external text" href="https://www.semantic-mediawiki.org/wiki/Help:Special_properties">Semantic MediaWiki</a> to represent URI/URL values.