Browse wiki

Jump to navigation Jump to search
ENS 50678
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)(xiii), Loss of Emergency Preparedness +, 10 CFR 50.72#b3xiii +  and 10 CFR 50.72#b3vD +
Current power
100  +
Current reactor mode
Power Operation +
Description
On December 15, 2014, at 0730 hours (CST) … On December 15, 2014, at 0730 hours (CST) the Control Room Emergency Ventilation (CREV) system was declared inoperable due to a partially stuck open main control room door. The door was unable to be closed to establish the boundary of the control room envelope. As a result, Technical Specification 3.7.4, Condition C, was entered. A repair plan and schedule is being developed.</br>The CREV system maintains a habitable control room environment and ensures the operability of components in the control room emergency zone during accident conditions as well as protection of the operators from a high dose environment assumed during a design basis accident.</br>This notification is being made in accordance with 10 CFR 50.72(b)(3)(v)(D) because the CREV system is a single train system, and loss of the CREV system could impact the plant's ability to mitigate the consequences of an accident as stated in Chapter 6 of the UFSAR. This event is also reportable under 10 CFR 50.72(b)(3)(xiii) since this condition also impacts the control room as an Emergency Response Facility.</br>At 0910 (CST) exited Tech Spec 3.7.4, Condition C, for CREV System Inoperable due to inoperable Control Room Envelope (CRE). The Control Room door is now closed. Completed post maintenance smoke test, satisfactory.</br>The NRC Resident Inspector has been notified. NRC Resident Inspector has been notified.  +
Discovered date
13:30:00, 15 December 2014  +
Emergency class
Non Emergency +
Entered date
13:58:00, 15 December 2014  +
Event date
13:30:00, 15 December 2014  +
Event description
On December 15, 2014, at 0730 hours (CST) … On December 15, 2014, at 0730 hours (CST) the Control Room Emergency Ventilation (CREV) system was declared inoperable due to a partially stuck open main control room door. The door was unable to be closed to establish the boundary of the control room envelope. As a result, Technical Specification 3.7.4, Condition C, was entered. A repair plan and schedule is being developed.</br>The CREV system maintains a habitable control room environment and ensures the operability of components in the control room emergency zone during accident conditions as well as protection of the operators from a high dose environment assumed during a design basis accident.</br>This notification is being made in accordance with 10 CFR 50.72(b)(3)(v)(D) because the CREV system is a single train system, and loss of the CREV system could impact the plant's ability to mitigate the consequences of an accident as stated in Chapter 6 of the UFSAR. This event is also reportable under 10 CFR 50.72(b)(3)(xiii) since this condition also impacts the control room as an Emergency Response Facility.</br>At 0910 (CST) exited Tech Spec 3.7.4, Condition C, for CREV System Inoperable due to inoperable Control Room Envelope (CRE). The Control Room door is now closed. Completed post maintenance smoke test, satisfactory.</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>.
ENS 50678 +, ENS 50678 +, ENS 50678 +, ENS 50678 +, ENS 50678 +, ENS 50678 +, ENS 50678 +, ENS 50678 +, ENS 50678 +, ENS 50678 +, ENS 50678 +, ENS 50678 +, ENS 50678 +  and ENS 50678 +
Hours
0.00845 d (0.203 hours, 0.00121 weeks, 2.77765e-4 months)  +
Initial power
100  +
Initial reactor mode
Power Operation +
LER
05000254/LER-2014-005, Regarding Main Control Room Door Unable to Close Causes Loss of Control Room Envelope Boundary +  and Regarding Main Control Room Door Unable to Close Causes Loss of Control Room Envelope Boundary +
Last update date
00:00:00, 15 December 2014  +
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>.
22:18:41, 24 September 2017  +
NRC officer
John Shoemaker +
Notification date
13:58:00, 15 December 2014  +
Originated by
James Cox +
Reactor critical
true  +
Reactor scram
false  +
Reactor type
GE-3 +
Region
NRC Region 3 +
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)(xiii), Loss of Emergency Preparedness +
Reporting time
0.0196 d (0.47 hours, 0.0028 weeks, 6.43806e-4 months)  +
Site
Quad Cities +
Start date
13:30:00, 15 December 2014  +
State
Illinois +
System
Control Room Emergency Ventilation +  and Control Room Envelope +
TS
TS-3.7.4 +
Title
Control Room Emergency Ventilation System Inoperable  +
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.
http://www.nrc.gov/reading-rm/doc-collections/event-status/event/2014/20141216en.html#en50678  +
Unit
1  +  and 2  +
 
Retrieved from "https://kanterella.com/Special:Browse/:ENS-2050678"