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At 0258 CST on November 28, 2013, two indi … At 0258 CST on November 28, 2013, two individuals were removing materials from the main steam isolation valve room (X-Area) and defeated an interlock which allowed them to open two secondary containment doors simultaneously. The X-Area personnel access doors connect secondary containment to the turbine building and are part of the secondary containment boundary.</br>At the time of this event, Dresden Unit 2 was in Mode 4 and secondary containment was not required. However, Dresden Unit 3 was in Mode 1 which requires secondary containment to be operable. Throughout this event, secondary containment differential pressure was maintained within technical specifications surveillance requirement 3.6.4.1.1 limits, and the individuals remained in the area with the capability to close the personnel access doors.</br>This condition represents a failure to meet surveillance requirement 3.6.4.1.2, since both doors in a singular access opening were allowed to open. As a result, entry into technical specification 3.6.4.1 condition A was made, for Unit 3, due to secondary containment being inoperable. The doors were secured at 0311 and secondary containment was declared operable. This event is being reported in accordance with 10 CFR 50.72(b)(3)(v)(C) as a condition that could have prevented the fulfillment of the safety function.</br>The NRC Resident Inspector has been notified. NRC Resident Inspector has been notified. +
08:58:00, 28 November 2013 +
49,590 +
10:56:00, 28 November 2013 +
08:58:00, 28 November 2013 +
At 0258 CST on November 28, 2013, two indi … At 0258 CST on November 28, 2013, two individuals were removing materials from the main steam isolation valve room (X-Area) and defeated an interlock which allowed them to open two secondary containment doors simultaneously. The X-Area personnel access doors connect secondary containment to the turbine building and are part of the secondary containment boundary.</br>At the time of this event, Dresden Unit 2 was in Mode 4 and secondary containment was not required. However, Dresden Unit 3 was in Mode 1 which requires secondary containment to be operable. Throughout this event, secondary containment differential pressure was maintained within technical specifications surveillance requirement 3.6.4.1.1 limits, and the individuals remained in the area with the capability to close the personnel access doors.</br>This condition represents a failure to meet surveillance requirement 3.6.4.1.2, since both doors in a singular access opening were allowed to open. As a result, entry into technical specification 3.6.4.1 condition A was made, for Unit 3, due to secondary containment being inoperable. The doors were secured at 0311 and secondary containment was declared operable. This event is being reported in accordance with 10 CFR 50.72(b)(3)(v)(C) as a condition that could have prevented the fulfillment of the safety function.</br>The NRC Resident Inspector has been notified. NRC Resident Inspector has been notified. +
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, 28 November 2013 +
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>.
22:21:19, 24 September 2017 +
10:56:00, 28 November 2013 +
true +
false +
0.0821 d (1.97 hours, 0.0117 weeks, 0.0027 months) +
SR-3.6.4.1.2 + and SR-3.6.4.1.1 +
08:58:00, 28 November 2013 +
Secondary Containment Declared Inoperable While Two Secondary Containment Doors Were Simultaneously Open +
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