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ENS 53380
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Category
ENS Notification  and Power Reactor
CFR
10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness +  and 10 CFR 50.72#b3xiii +
Current power
100  +
Current reactor mode
Power Operation +
Description
During planned maintenance on Unit 2 Radia … During planned maintenance on Unit 2 Radiation Monitor 2-RE-4270 (Service Water Train B to Discharge Canal Rad Monitor), at 1220 CDT, several other Unit 2 Radiation Monitors that are used for Emergency Action Level evaluation became nonfunctional for about 1 hour. With these radiation monitors non-functional, all of the Emergency Action Levels associated with these monitors could neither be evaluated nor monitored. This unplanned condition is reportable as a loss of assessment capability per 10 CFR 50.72(b)(3)(xiii). A PC11 computer reboot restored the affected radiation monitors to a functional status.</br>The NRC Resident Inspector has been notified. NRC Resident Inspector has been notified.  +
Discovered date
17:20:00, 3 May 2018  +
Emergency class
Non Emergency +
Entered date
18:40:00, 3 May 2018  +
Event date
17:20:00, 3 May 2018  +
Event description
During planned maintenance on Unit 2 Radia … During planned maintenance on Unit 2 Radiation Monitor 2-RE-4270 (Service Water Train B to Discharge Canal Rad Monitor), at 1220 CDT, several other Unit 2 Radiation Monitors that are used for Emergency Action Level evaluation became nonfunctional for about 1 hour. With these radiation monitors non-functional, all of the Emergency Action Levels associated with these monitors could neither be evaluated nor monitored. This unplanned condition is reportable as a loss of assessment capability per 10 CFR 50.72(b)(3)(xiii). A PC11 computer reboot restored the affected radiation monitors to a functional status.</br>The NRC Resident Inspector has been notified. NRC Resident Inspector has been notified.  +
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ENS 53380 +, ENS 53380 +, ENS 53380 +, ENS 53380 +, ENS 53380 +, ENS 53380 +, ENS 53380 +, ENS 53380 +, ENS 53380 +, ENS 53380 +, ENS 53380 +, ENS 53380 +, ENS 53380 +  and ENS 53380 +
Hours
1.157407e-5 d (2.777778e-4 hours, 1.653439e-6 weeks, 3.805e-7 months)  +
Initial power
100  +
Initial reactor mode
Power Operation +
Last update date
00:00:00, 3 May 2018  +
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>.
11:30:11, 4 May 2018  +
NRC officer
Ossy Font +
Notification date
18:40:00, 3 May 2018  +
Originated by
Loren Stuck +
Reactor critical
true  +
Reactor scram
false  +
Reactor type
Westinghouse PWR 4-Loop +
Region
NRC Region 4 +
Reporting criterion
10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness +
Reporting time
0.0554 d (1.33 hours, 0.00792 weeks, 0.00182 months)  +
Site
Comanche Peak +
Start date
17:20:00, 3 May 2018  +
State
Texas +
System
Service water +
Title
Loss of Emergency Assessment Capability  +
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/2018/20180504en.html#en53380  +
Unit
2  +
 
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