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ENS 40596
Show incoming properties 
Category
ENS Notification  and Power Reactor
CFR
10 CFR 50.72(b)(3)(v)(A), Loss of Safety Function - Shutdown the Reactor +, 10 CFR 50.72(b)(3)(v)(B), Loss of Safety Function - Remove Residual Heat +  and 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident +
Current power
100  +
Current reactor mode
Power Operation +
Description
{{#Regex_clear:At 1457 on 3-17-2004, Wolf … {{#Regex_clear:At 1457 on 3-17-2004, Wolf Creek Generating Station Fire Protection Engineering submitted information to the Control Room that there was a flooding analysis concern in the Engineered Safety Features Switchgear (NB) Rooms regarding the 2 � inch fire protection header that is located in the rooms. The capability of the floor drain system in the room is indeterminate in regards to draining all the water that could be expected to accumulate in the rooms if the fire main were to rupture during a seismic event.</br>Compensatory actions have been put in place in the form of additional fire suppression equipment and administrative isolation of the fire protection header that is located in the NB switchgear rooms. Investigation continues into the assumptions used in the flooding and seismic analysis. The Senior Resident Inspector has been notified. </br>* * * RETRACTION ON 05/11/04 AT 1555 EDT FROM C. SIBLEY TO A. COSTA * * *</br>On March 17, 2004, at 2125 EST, Wolf Creek Nuclear Operating Corporation (WCNOC) made an event notification regarding a flooding analysis concern related to a 2 1/2 Inch fire protection header located in the Engineered Safety Features Switchgear (NB) Rooms (EN40596). This notification identified that the analysis with regards to draining all the water from the room in the event that the fire protection header pipe were to rupture during a seismic event was indeterminate.</br>Subsequent evaluation has determined that the fire protection header piping located in the subject NB switchgear rooms is built to seismic Il/I requirements, and is therefore not subject to a pipe rupture in the event of a seismic event. Therefore, WCNOC is retracting the March 17, 2004 event notification. </br>The NRC Senior Resident Inspector has been notified.</br>Notified R4DO (L. Smith). }}een notified. Notified R4DO (L. Smith). }}  +
Discovered date
20:57:00, 17 March 2004  +
ENS id number
40,596  +
Emergency class
Non Emergency +
Entered date
21:25:00, 17 March 2004  +
Event date
20:57:00, 17 March 2004  +
Event description
{{#Regex_clear:At 1457 on 3-17-2004, Wolf … {{#Regex_clear:At 1457 on 3-17-2004, Wolf Creek Generating Station Fire Protection Engineering submitted information to the Control Room that there was a flooding analysis concern in the Engineered Safety Features Switchgear (NB) Rooms regarding the 2 � inch fire protection header that is located in the rooms. The capability of the floor drain system in the room is indeterminate in regards to draining all the water that could be expected to accumulate in the rooms if the fire main were to rupture during a seismic event.</br>Compensatory actions have been put in place in the form of additional fire suppression equipment and administrative isolation of the fire protection header that is located in the NB switchgear rooms. Investigation continues into the assumptions used in the flooding and seismic analysis. The Senior Resident Inspector has been notified. </br>* * * RETRACTION ON 05/11/04 AT 1555 EDT FROM C. SIBLEY TO A. COSTA * * *</br>On March 17, 2004, at 2125 EST, Wolf Creek Nuclear Operating Corporation (WCNOC) made an event notification regarding a flooding analysis concern related to a 2 1/2 Inch fire protection header located in the Engineered Safety Features Switchgear (NB) Rooms (EN40596). This notification identified that the analysis with regards to draining all the water from the room in the event that the fire protection header pipe were to rupture during a seismic event was indeterminate.</br>Subsequent evaluation has determined that the fire protection header piping located in the subject NB switchgear rooms is built to seismic Il/I requirements, and is therefore not subject to a pipe rupture in the event of a seismic event. Therefore, WCNOC is retracting the March 17, 2004 event notification. </br>The NRC Senior Resident Inspector has been notified.</br>Notified R4DO (L. Smith). }}een notified. Notified R4DO (L. Smith). }}  +
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 40596 +, ENS 40596 +, ENS 40596 +, ENS 40596 +, ENS 40596 +, ENS 40596 +, ENS 40596 +, ENS 40596 +, ENS 40596 +, ENS 40596 +, ENS 40596 +, ENS 40596 +, ENS 40596 +, ENS 40596 +, ENS 40596 +, ENS 40596 +  and ENS 40596 +
Initial power
100  +
Initial reactor mode
Power Operation +
Last update date
00:00:00, 11 May 2004  +
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>.
22:43:17, 24 September 2017  +
NRC officer
Mike Ripley +
Notification date
21:25:00, 17 March 2004  +
Originated by
Dave Dees +
Reactor critical
true  +
Reactor scram
false  +
Reactor type
Westinghouse PWR 4-Loop +
Region
NRC Region 4 +
Reporting criterion
10 CFR 50.72(b)(3)(v)(A), Loss of Safety Function - Shutdown the Reactor +, 10 CFR 50.72(b)(3)(v)(B), Loss of Safety Function - Remove Residual Heat +  and 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident +
Reporting time
0.0196 d (0.47 hours, 0.0028 weeks, 6.43806e-4 months)  +
Retracted
true  +
Site
Wolf Creek +
Start date
20:57:00, 17 March 2004  +
State
Kansas +
Title
Switchgear Rooms Flooding Analysis Concerns  +
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/2004/20040512en.html#en40596  +
Unit
1  +
 
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