ML13246A368
| ML13246A368 | |
| Person / Time | |
|---|---|
| Site: | Wolf Creek  |
| Issue date: | 01/31/2012 |
| From: | Stephen Pannier Office of Nuclear Reactor Regulation |
| To: | Robles J Office of Nuclear Reactor Regulation |
| References | |
| FOIA/PA-2013-0273 | |
| Download: ML13246A368 (1) | |
Text
Robles, Jesse From:
Pannier, Stephen Sent:
Tuesday, January 31, 2012 6:54 AM To:
Robles, Jesse
Subject:
RE: Wolf Creek AIT Thanks a lot Steve From: Robles, Jesse Sent: Tuesday, January 31, 2012 6:46 AM To: Pannier, Stephen
Subject:
Wolf Creek AIT
The AlT had the entrance at 3pm CST yesterday, and the licensee presented their //T progress.
They have concluded that the initial breaker fault was foreign material in the breaker internals from manufacturing (based on the vendor's review of the faulted breaker).
They still do not know why the SUT tripped, but they've ruled out a number of options, but they did identify one of the 13.8kV Switchgear line-side Potential Transformers indicated a short when first tested (although subsequent confirmatory tests did not show the fault; they are still reviewing that one as a possible intermittent fault as a possible cause).
Their //T is chartered to review all the equipment issues we have in our charter and also the aggregate impact of the LOOP on the station.
The AlT will be having team meetings at 4pm each day and a briefing with RIV management at 11 each day (however, the RIV brief will be at 3pm tomorrow (Tuesday)).
Jesse E. Robles U.S. Nuclear Regulatory Commission Reactor Systems Engineer NRR/DIRS/IOEB 301-415-2940 301-415-3061 (fax)
Jesse.Roblesýf)nrc.gov I