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ENS 47590
Show incoming properties 
Category
ENS Notification  and Power Reactor
Area
Switchyard +
CFR
10 CFR 50.72(b)(3)(v)(A), Loss of Safety Function - Shutdown the Reactor +, 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation +, 10 CFR 50.72(a)(1)(i), Emergency Class Declaration +, 10 CFR 50.72(b)(3)(iv)(A), System Actuation +  and 10 CFR 50.72#b3vA +
Current power
0  +
Current reactor mode
Hot Standby +
Description
At 1403 CST, Wolf Creek experienced a reac … At 1403 CST, Wolf Creek experienced a reactor trip due to loss of power in the switchyard. At 1415 CST, Wolf Creek declared a Notification of Unusual Event (NOUE) when it was determined that the switchyard would not be restored within 15 minutes.</br>All systems functioned as expected in response to this event and both Emergency Diesel Generators started and energized the safety-related buses.</br>The plant is currently stable in Mode 3 and investigation into the cause for loss of power in the switchyard is underway.</br>During the trip, all rods inserted into the core. No primary relief valves lifted as a result of the transient. Decay heat is being removed via the atmospheric steam dumps with auxiliary feedwater supplying the steam generators. The plant is stable at NOP/NOT. No safety significant equipment is reported out of service.</br>The licensee has notified state and local governments and the NRC Resident Inspector.</br>* * * UPDATE FROM DAVE DEES TO VINCE KLCO AT 1851 EST ON 1/13/12 * * *</br>At 1709 CST, the licensee exited the NOUE when power was restored to the east bus from offsite. Additionally, the licensee is reporting a loss of safe shutdown capability in accordance with 10CFR50.72(b)(3)(v)(A) due to the initial loss of offsite power.</br>The licensee has notified state and local governments, the NRC Resident Inspector, and will be issuing a press release on the event.</br>Notified R4DO (Powers), IRD (Marshall), NRR (Cheok), FEMA (Burckart) and DHS (Hill).R (Cheok), FEMA (Burckart) and DHS (Hill).  +
Discovered date
20:03:00, 13 January 2012  +
Emergency class
Unusual Event +
Entered date
16:05:00, 13 January 2012  +
Equipment trip
Reactor Trip +
Event date
20:03:00, 13 January 2012  +
Event description
At 1403 CST, Wolf Creek experienced a reac … At 1403 CST, Wolf Creek experienced a reactor trip due to loss of power in the switchyard. At 1415 CST, Wolf Creek declared a Notification of Unusual Event (NOUE) when it was determined that the switchyard would not be restored within 15 minutes.</br>All systems functioned as expected in response to this event and both Emergency Diesel Generators started and energized the safety-related buses.</br>The plant is currently stable in Mode 3 and investigation into the cause for loss of power in the switchyard is underway.</br>During the trip, all rods inserted into the core. No primary relief valves lifted as a result of the transient. Decay heat is being removed via the atmospheric steam dumps with auxiliary feedwater supplying the steam generators. The plant is stable at NOP/NOT. No safety significant equipment is reported out of service.</br>The licensee has notified state and local governments and the NRC Resident Inspector.</br>* * * UPDATE FROM DAVE DEES TO VINCE KLCO AT 1851 EST ON 1/13/12 * * *</br>At 1709 CST, the licensee exited the NOUE when power was restored to the east bus from offsite. Additionally, the licensee is reporting a loss of safe shutdown capability in accordance with 10CFR50.72(b)(3)(v)(A) due to the initial loss of offsite power.</br>The licensee has notified state and local governments, the NRC Resident Inspector, and will be issuing a press release on the event.</br>Notified R4DO (Powers), IRD (Marshall), NRR (Cheok), FEMA (Burckart) and DHS (Hill).R (Cheok), FEMA (Burckart) and DHS (Hill).  +
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 47590 +, ENS 47590 +, ENS 47590 +, ENS 47590 +, ENS 47590 +, ENS 47590 +, ENS 47590 +, ENS 47590 +, ENS 47590 +, ENS 47590 +, ENS 47590 +, ENS 47590 +, ENS 47590 +, ENS 47590 +, ENS 47590 +, ENS 47590 +  and ENS 47590 +
Initial power
100  +
Initial reactor mode
Power Operation +
Last update date
00:00:00, 13 January 2012  +
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>.
02:05:04, 2 March 2018  +
NRC officer
Howie Crouch +
Notification date
16:05:00, 13 January 2012  +
Originated by
Terry Damashek +
Person
Vince Klco +
Reactor critical
true  +
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)(2)(iv)(B), RPS System Actuation +, 10 CFR 50.72(a)(1)(i), Emergency Class Declaration +  and 10 CFR 50.72(b)(3)(iv)(A), System Actuation +
Reporting time
-0.165 d (-3.97 hours, -0.0236 weeks, -0.00544 months)  +
Site
Wolf Creek +
Start date
20:03:00, 13 January 2012  +
State
Kansas +
System
Steam Generator +, Emergency Diesel Generator +  and Auxiliary Feedwater +
Title
Notification of Unusual Event and Reactor Trip Due to Loss of Offsite Power  +
Topic
Safe Shutdown +
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/2012/20120117en.html#en47590  +
Unit
1  +
 
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