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ENS 45020
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Category
ENS Notification  and Power Reactor
CFR
10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness +
Current power
100  +
Current reactor mode
Power Operation +
Description
The Unit One Plant Process Computer failed … The Unit One Plant Process Computer failed at 1048 CDT. The failure disabled plant data information inputs to the NRC Emergency Response Data System (ERDS). ERDS unavailability was validated by the NRC. ERDS was not restored within one hour, which necessitates this ENS notification per 50.72(b)(3)(xiii). The Plant Process Computer was restored at 1342, which restored ERDS.</br>The NRC Resident Inspector has been notified. NRC Resident Inspector has been notified.  +
Discovered date
15:48:00, 25 April 2009  +
ENS id number
45,020  +
Emergency class
Non Emergency +
Entered date
16:02:00, 25 April 2009  +
Event date
15:48:00, 25 April 2009  +
Event description
The Unit One Plant Process Computer failed … The Unit One Plant Process Computer failed at 1048 CDT. The failure disabled plant data information inputs to the NRC Emergency Response Data System (ERDS). ERDS unavailability was validated by the NRC. ERDS was not restored within one hour, which necessitates this ENS notification per 50.72(b)(3)(xiii). The Plant Process Computer was restored at 1342, which restored ERDS.</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 45020 +, ENS 45020 +, ENS 45020 +, ENS 45020 +, ENS 45020 +, ENS 45020 +, ENS 45020 +, ENS 45020 +, ENS 45020 +, ENS 45020 +, ENS 45020 +, ENS 45020 +, ENS 45020 +  and ENS 45020 +
Initial power
100  +
Initial reactor mode
Power Operation +
Last update date
00:00:00, 25 April 2009  +
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>.
02:12:14, 2 March 2018  +
NRC officer
Bill Huffman +
Notification date
16:02:00, 25 April 2009  +
Originated by
Ken Hetzel +
Reactor critical
true  +
Reactor scram
false  +
Reactor type
Westinghouse PWR 4-Loop +
Region
NRC Region 3 +
Reporting criterion
10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness +
Reporting time
0.00958 d (0.23 hours, 0.00137 weeks, 3.15054e-4 months)  +
Site
Byron +
Start date
15:48:00, 25 April 2009  +
State
Illinois +
System
Emergency Response Data System +
Title
Erds Unavailability Due to Plant Process Computer Failure  +
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/2009/20090427en.html#en45020  +
Unit
1  +
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