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ENS 52501
Show incoming properties 
Category
ENS Notification  and Power Reactor
CFR
10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident +, 10 CFR 50.72(b)(3)(v)(C), Loss of Safety Function - Release of Radioactive Material +, 10 CFR 50.72#b3vC +  and 10 CFR 50.72#b3vD +
Current power
100  +
Current reactor mode
Power Operation +
Description
At 0835 (EST) on January 20, 2017, at Mill … At 0835 (EST) on January 20, 2017, at Millstone Power Station Unit 3, subsequent to personnel passage through a door in the auxiliary building, the door failed rendering it unable to completely close. At this time, in accordance with Technical Specification 3.6.6.2 "Secondary Containment," the Shift Manager declared the secondary containment inoperable. The door was repaired and the door completely closed at 1256 (EST) on January 20, 2017, and secondary containment was declared operable.</br>Since Secondary Containment was rendered inoperable, Dominion is reporting that this condition could have prevented the fulfillment of the safety function to control the release of radioactive material and mitigate the consequences of an accident.</br>This condition is being reported pursuant to 10 CFR 50.72(b)(3)(v)(C) and 10 CFR 50.72(b)(3)(v)(D).</br>The NRC Senior Resident Inspector has been notified.nior Resident Inspector has been notified.  +
Discovered date
13:35:00, 20 January 2017  +
Emergency class
Non Emergency +
Entered date
16:02:00, 20 January 2017  +
Event date
13:35:00, 20 January 2017  +
Event description
At 0835 (EST) on January 20, 2017, at Mill … At 0835 (EST) on January 20, 2017, at Millstone Power Station Unit 3, subsequent to personnel passage through a door in the auxiliary building, the door failed rendering it unable to completely close. At this time, in accordance with Technical Specification 3.6.6.2 "Secondary Containment," the Shift Manager declared the secondary containment inoperable. The door was repaired and the door completely closed at 1256 (EST) on January 20, 2017, and secondary containment was declared operable.</br>Since Secondary Containment was rendered inoperable, Dominion is reporting that this condition could have prevented the fulfillment of the safety function to control the release of radioactive material and mitigate the consequences of an accident.</br>This condition is being reported pursuant to 10 CFR 50.72(b)(3)(v)(C) and 10 CFR 50.72(b)(3)(v)(D).</br>The NRC Senior Resident Inspector has been notified.nior 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>.
ENS 52501 +, ENS 52501 +, ENS 52501 +, ENS 52501 +, ENS 52501 +, ENS 52501 +, ENS 52501 +, ENS 52501 +, ENS 52501 +, ENS 52501 +, ENS 52501 +, ENS 52501 +, ENS 52501 +, ENS 52501 +  and ENS 52501 +
Initial power
100  +
Initial reactor mode
Power Operation +
Last update date
00:00:00, 20 January 2017  +
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>.
01:41:48, 2 March 2018  +
NRC officer
Steven Vitto +
Notification date
16:02:00, 20 January 2017  +
Originated by
Walter Orf +
Reactor critical
true  +
Reactor scram
false  +
Reactor type
Westinghouse PWR 4-Loop +
Region
NRC Region 1 +
Reporting criterion
10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident +  and 10 CFR 50.72(b)(3)(v)(C), Loss of Safety Function - Release of Radioactive Material +
Reporting time
0.102 d (2.45 hours, 0.0146 weeks, 0.00336 months)  +
Site
Millstone +
Start date
13:35:00, 20 January 2017  +
State
Connecticut +
System
Secondary containment +
TS
TS-3.6.6.2 +
Title
Failure of a Secondary Containment Door to Close  +
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.
https://www.nrc.gov/reading-rm/doc-collections/event-status/event/2017/20170123en.html#en52501  +
Unit
3  +
 
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