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).
- * * RETRACTION FROM JIM KURAS TO JOHN SHOEMAKER ON 04/18/13 AT 1322 EDT * * *
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).
