PNO-I-08-006, A: Vermont Yankee Nuclear Power Station, (Update) Transfer of Spent Fuel from Spent Fuel Storage Pool to Onsite Independent Spent Fuel Storage Installation (ISFSI)
| ML081510695 | |
| Person / Time | |
|---|---|
| Site: | Vermont Yankee  |
| Issue date: | 05/30/2008 |
| From: | Ray Lorson NRC Region 1 |
| To: | |
| References | |
| PNO-I-08-006A | |
| Download: ML081510695 (2) | |
DCS No.: 05000271080 523 Date: 05/30/08 PRELIMINARY NOTIFICATION OF EVENT OR UNUSUAL OCCURRENCE PNO-I-08-006A This preliminary notification constitutes EARLY notice of events of POSSIBLE safety or public interest significance. The information is as initially received without verification or evaluation, and is basically all that is known by the Region I staff on this date. Facility Vermont Yankee Nuclear Power Station 185 Old Ferry Road P.O. Box 500 Brattleboro, VT 05302-0500 Licensee Emergency Classification Notification of Unusual Event Alert Site Area Emergency General Emergency X Not Applicable Docket No.: 50-271 License No.: DPR-28
SUBJECT:
(UPDATE) TRANSFER OF SPENT FUEL FROM SPENT FUEL STORAGE POOL TO ONSITE INDEPENDENT SPENT FUEL STORAGE INSTALLATION (ISFSI)
Vermont Yankee completed the transfer of the initial cask of spent fuel to the on-site Independent Spent Fuel Storage Installation (ISFSI) at approximately 3:00 pm on May 29, 2008. No equipment problems were noted subsequent to the resumption of the spent fuel transfer activities on May 23, 2008. The spent fuel handling activities had been suspended following identification of a reactor building crane issue on May 12, 2008. Specifically, while lowering a spent fuel transfer cask, the crane operator attempted to stop movement of the crane when the transfer cask was approximately four inches above the refueling floor. However, the crane motion did not stop as expected, and the fuel cask continued to be lowered at the normal rate of speed to the refueling floor. The spent fuel transfer cask was set down on the refueling floor in an acceptable location and supplemental cooling was established per procedure. This issue did not have any impact on public health and safety.
Entergy conducted troubleshooting and attributed the crane problem to improperly calibrated relays that function to actuate the crane brakes. Entergy re-calibrated the affected relays, then retested the crane on May 22, 2008. The NRC's Resident Inspectors, as well as a specialist inspector from the NRC's Region I office in King of Prussia, PA, reviewed the crane troubleshooting activities. The adequacy and thoroughness of Entergy's past maintenance of the reactor building crane continue to be reviewed by the NRC, and the results will be included in an upcoming inspection report.
The NRC continues to inspect activities associated with the ISFSI campaign. The information presented herein is current as of 10:00 a.m., May 30, 2008.
The NRC Region I office has communicated with the State of Vermont, the State of New Hampshire, and the Commonwealth of Massachusetts regarding the reactor building crane issue. This preliminary notification is issued for information only.
ADAMS Accession Number ML081510695 Contact: Raymond Lorson, 610-337-5282 DISTRIBUTION by e-mail:
Chairman Klein Comm. Jaczko Comm. Lyons Comm. Svinicki OIP OCA OGC EDO OE NRR NMSS OIG RES ACRS FSME NRO NSIR OPA SECY Regional Offices BY FAX:
DOT:Trans INPO NSAC RI Resident Office Licensee: Entergy Nuclear Operations, Inc., Vermont Yankee Nuclear Power Station SUNSI Review Complete: r lorson (Reviewer's Initials) After declaring this document "An Official Agency Record" it will be released to the Public. To receive a copy of this document, indicate in the box:
" C" = Copy without attachment/enclosure " E" = Copy with attachment/enclosure " N" = No copy DOCUMENT NAME: S:\PN\PN10806A.doc OFFICE RI/DNMS RI/SLO RI/DNMS RI/PAO RI/ORA NAME RLorson/ rl NMcNamara/ ntm JKinneman/ jdk DScrenci/
dps MDapas/ mld DATE 5/30/08 5/30/08 5/30/08 5/30/08 5/30/08 OFFICIAL RECORD COPY Region I Form 83