ENS 48802
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ENS Event | |
|---|---|
04:42 Mar 2, 2013 | |
| Title | Unusual Event Due to Loss of Both Emergency Diesel Generators |
| Event Description | On 3/1/2013 at 2242 CST, Wolf Creek Unit 1 declared a Notification of Unusual Event (NOUE) due to both Emergency Diesel Generators (EDG) being unavailable: With the 'A' EDG out of service for planned maintenance, the 'B' EDG was discovered to have high governor oil level and was declared inoperable at 2235 CST.
The governor oil level was adjusted and the 'B' EDG was declared operable at 2307 CST. The NOUE was terminated on 3/21/2013 at 2321 CST. Normal offsite power was maintained to the plant and no offsite assistance was requested. The licensee notified state and local agencies and the NRC Resident Inspector. Notified DHS, FEMA, DHS NICC and NuclearSSA (email).
Further evaluation by the Engineering department determined that the 'B' EDG was available with the high governor oil level. Testing was performed at an offsite facility, which confirmed that the 'B' EDG was capable of performing its specified safety function with the as-found oil level. As a result, the condition has been determined to not be reportable per 10 CFR 50.72(a)(1)(i). The licensee will notify the NRC Resident Inspector. Notified R4DO (Drake), NRR EO (Skeen) and IRD MOC (Grant). |
| Where | |
|---|---|
Wolf Creek  Kansas (NRC Region 4) | |
| Reporting | |
| Emergency class: | Unusual Event |
| 10 CFR 50.72(a) (1) (i), Emergency Class Declaration | |
| Time - Person (Reporting Time:+-4.28 h-0.178 days <br />-0.0255 weeks <br />-0.00586 months <br />) | |
| Opened: | Eric Martinson 00:25 Mar 2, 2013 |
| NRC Officer: | John Shoemaker |
| Last Updated: | Apr 18, 2013 |
| 48802 - NRC Website
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WEEKMONTHYEARENS 505102014-10-06T18:36:0006 October 2014 18:36:00
[Table view]10 CFR 50.72(a)(1)(i), Emergency Class Declaration Alert Declared - Fire in a Diesel Generator Potential Transformer ENS 489142013-04-11T20:10:00011 April 2013 20:10:00 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Unusual Event for a Fire Lasting Greater than 15 Minutes ENS 488202013-03-13T06:49:00013 March 2013 06:49:00 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Unusual Event Declared Due to Inoperable Emergency Diesel Generators ENS 488022013-03-02T04:42:0002 March 2013 04:42:00 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Unusual Event Due to Loss of Both Emergency Diesel Generators ENS 475902012-01-13T20:03:00013 January 2012 20:03:00 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 Notification of Unusual Event and Reactor Trip Due to Loss of Offsite Power ENS 454562009-10-22T22:39:00022 October 2009 22:39:00 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Unusual Event Declared Due to Inoperable Diesel Generators While Defueled ENS 441232008-04-07T15:33:0007 April 2008 15:33:00 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Unusual Event - Loss of Off-Site Power While Defueled 2014-10-06T18:36:00 | |
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