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On February 2, 2010, at approximately 1400 … On February 2, 2010, at approximately 1400 CST, Entergy personnel manually switched the Emergency Operations Facility (EOF) Ventilation System Panel to the isolation mode. This manual switching to the isolation mode will cause the isolation dampers to close and the movement of the dampers closing can normally be heard. An indication light on the ventilation panel will illuminate when the dampers close. For the manual isolation on February 2, 2010, these indications did not occur. Waterford 3 personnel have made a judgment that the isolation dampers may not be closed due the lack of the aforementioned indications. The EOF ventilation system is not able to perform its isolation function if the dampers are not closed. The ventilation system and associated dampers are designed to provide protection from radiological and toxic chemical release. This report is being made because the time to restore the ventilation system to functional status is indeterminate at this time, until the actual condition of the ventilation system can be established.</br>The back up EOF facility is judged to be functional based on January 12, 2010 communications check and facility readiness verifications on January 28, 2010.</br>The licensee informed the NRC Resident Inspector.ensee informed the NRC Resident Inspector. +
20:00:00, 2 February 2010 +
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20:37:00, 2 February 2010 +
20:00:00, 2 February 2010 +
On February 2, 2010, at approximately 1400 … On February 2, 2010, at approximately 1400 CST, Entergy personnel manually switched the Emergency Operations Facility (EOF) Ventilation System Panel to the isolation mode. This manual switching to the isolation mode will cause the isolation dampers to close and the movement of the dampers closing can normally be heard. An indication light on the ventilation panel will illuminate when the dampers close. For the manual isolation on February 2, 2010, these indications did not occur. Waterford 3 personnel have made a judgment that the isolation dampers may not be closed due the lack of the aforementioned indications. The EOF ventilation system is not able to perform its isolation function if the dampers are not closed. The ventilation system and associated dampers are designed to provide protection from radiological and toxic chemical release. This report is being made because the time to restore the ventilation system to functional status is indeterminate at this time, until the actual condition of the ventilation system can be established.</br>The back up EOF facility is judged to be functional based on January 12, 2010 communications check and facility readiness verifications on January 28, 2010.</br>The licensee informed the NRC Resident Inspector.ensee informed 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>.
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00:00:00, 2 February 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>.
02:10:22, 2 March 2018 +
20:37:00, 2 February 2010 +
true +
false +
0.0258 d (0.62 hours, 0.00369 weeks, 8.49276e-4 months) +
20:00:00, 2 February 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.