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ENS 50596
Show incoming properties
Category
ENS Notification  and Power Reactor
CFR
10 CFR 50.72(b)(3)(ii)(B), Unanalyzed Condition +
Current power
100  +
Current reactor mode
Power Operation +
Description
On November 5, 2014, during a review of re … On November 5, 2014, during a review of recommended procedure changes, TVA determined procedures for Appendix R fires did not include all the required operator manual actions to address inadvertent opening of the pressurizer spray valves. Failure to secure the reactor coolant pumps or auxiliary spray would invalidate Appendix R assumptions for not overfilling the pressurizer during an Appendix R event. Failure to take all the required actions would place WBN (Watts Bar Nuclear) Unit 1 in an unanalyzed condition.</br>The three affected procedures have been revised on 11/5/2014, to correct the condition.</br>The NRC Resident Inspector has been notified of this condition.ector has been notified of this condition.  +
Discovered date
18:10:00, 5 November 2014  +
ENS id number
50,596  +
Emergency class
Non Emergency +
Entered date
20:37:00, 5 November 2014  +
Event date
18:10:00, 5 November 2014  +
Event description
On November 5, 2014, during a review of re … On November 5, 2014, during a review of recommended procedure changes, TVA determined procedures for Appendix R fires did not include all the required operator manual actions to address inadvertent opening of the pressurizer spray valves. Failure to secure the reactor coolant pumps or auxiliary spray would invalidate Appendix R assumptions for not overfilling the pressurizer during an Appendix R event. Failure to take all the required actions would place WBN (Watts Bar Nuclear) Unit 1 in an unanalyzed condition.</br>The three affected procedures have been revised on 11/5/2014, to correct the condition.</br>The NRC Resident Inspector has been notified of this condition.ector has been notified of this condition.  +
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 50596 +, ENS 50596 +, ENS 50596 +, ENS 50596 +, ENS 50596 +, ENS 50596 +, ENS 50596 +, ENS 50596 +, ENS 50596 +, ENS 50596 +, ENS 50596 +, ENS 50596 +, ENS 50596 +  and ENS 50596 +
Initial power
100  +
Initial reactor mode
Power Operation +
Last update date
00:00:00, 5 November 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>.
22:18:55, 24 September 2017  +
NRC officer
John Shoemaker +
Notification date
20:37:00, 5 November 2014  +
Originated by
Henry Taylor +
Reactor critical
true  +
Reactor scram
false  +
Reactor type
Westinghouse PWR 4-Loop +
Region
NRC Region 2 +
Reporting criterion
10 CFR 50.72(b)(3)(ii)(B), Unanalyzed Condition +
Reporting time
0.102 d (2.45 hours, 0.0146 weeks, 0.00336 months)  +
Site
Watts Bar +
Start date
18:10:00, 5 November 2014  +
State
Tennessee +
Title
Unanalyzed Condition Regarding Appendix R Procedures  +
Topic
Unanalyzed Condition +  and Operator Manual Action +
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/2014/20141106en.html#en50596  +
Unit
1  +
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