ML071700758
| ML071700758 | |
| Person / Time | |
|---|---|
| Site: | North Anna  |
| Issue date: | 06/28/2007 |
| From: | Richard Jervey NRC/NRR/ADRO/DORL/LPLII-1 |
| To: | Christian D Virginia Electric & Power Co (VEPCO) |
| Jervey, Richard 301-415-2728 | |
| References | |
| TAC MD4628 | |
| Download: ML071700758 (4) | |
Text
June 28, 2007 Mr. David A. Christian Senior Vice President and Chief Nuclear Officer Virginia Electric and Power Company Innsbrooks Technical Center 5000 Dominion Boulevard Glen Allen, VA 23060-6711
SUBJECT:
NORTH ANNA POWER STATION, UNIT NO. 1 - REVIEW OF STEAM GENERATOR TUBE INSERVICE INSPECTION REPORT FOR THE 2006 REFUELING OUTAGE (TAC NO. MD4628)
Dear Mr. Christian:
By letter dated March 30, 2006, (Agencywide Document Access and Management System (ADAMS) Accession No. ML060890696), and letter dated February 27, 2007, (ADAMS Accession No. ML071140441), Dominion Resources Services, Inc., submitted the steam generator tube inservice inspection report for the Virginia Electric and Power Company (VEPCO), North Anna Power Station, Unit No.1. The report presented the results of VEPCOs steam generator tube inspections that were performed during the 2006 refueling outage.
The Nuclear Regulatory Commission (NRC) staffs review of this submittal is enclosed. As documented in the enclosed evaluation, the NRC staff has concluded that no additional follow-up is required at this time.
Sincerely,
/RA/
R. A. Jervey, Project Manager Plant Licensing Branch II-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket No. 50-338
Enclosure:
Evaluation cc w/encl: See next page
June 28, 2007 Mr. David A. Christian Senior Vice President and Chief Nuclear Officer Virginia Electric and Power Company Innsbrooks Technical Center 5000 Dominion Boulevard Glen Allen, VA 23060-6711
SUBJECT:
NORTH ANNA POWER STATION, UNIT NO. 1 - REVIEW OF STEAM GENERATOR TUBE INSERVICE INSPECTION REPORT FOR THE 2006 REFUELING OUTAGE (TAC NO. MD4628)
Dear Mr. Christian:
By letter dated March 30, 2006, (Agencywide Document Access and Management System (ADAMS) Accession No. ML060890696), and letter dated February 27, 2007, (ADAMS Accession No. ML071140441), Dominion Resources Services, Inc., submitted the steam generator tube inservice inspection report for the Virginia Electric and Power Company (VEPCO), North Anna Power Station, Unit No.1. The report presented the results of VEPCOs steam generator tube inspections that were performed during the 2006 refueling outage.
The Nuclear Regulatory Commission (NRC) staffs review of this submittal is enclosed. As documented in the enclosed evaluation, the NRC staff has concluded that no additional follow-up is required at this time.
Sincerely,
/RA/
R. A. Jervey, Project Manager Plant Licensing Branch II-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket No. 50-338
Enclosure:
Evaluation cc w/encl: See next page DISTRIBUTION:
PUBLIC LPL2-1 R/F AHiser, NRR RidsNrrLAMOBrien RidsNrrPMRJervey KKarowski, NRR RidsAcrsAcnwMailCenter RidsNrrDorlLpl2-1 (EMarinos)
RidsOgcMailCenter RidsRgn2MailCenter (EGuthrie)
Adams Accession No. ML071700758
- By Memo ML0307600280 OFFICE NRR/LPL2-1/PM NRR/LPL2-1/LA CSGB/BC NRR/LPL2-1/BC NAME RJervey:nc MOBrien AHiser*
EMarinos DATE 06 / 28 /07 06 / 28 /07 6/14/07 06 / 28 /07 OFFICIAL RECORD COPY
Enclosure OFFICE OF NUCLEAR REACTOR REGULATION REVIEW OF 2006 REFUELING OUTAGE STEAM GENERATOR TUBE INSERVICE INSPECTION RESULTS NORTH ANNA POWER STATION, UNIT NO. 1 DOCKET NO. 50-338 By letters dated March 30, 2006 (ML060890696), and February 27, 2007 (ML071140441),
Virginia Electric and Power Company (VEPCO), the licensee, submitted the steam generator tube inspection report (EOC18/REOC9) for the 2006 inspections performed at North Anna Power Station, Unit No. 1 (North Anna 1).
North Anna 1 has three Westinghouse Model 54F replacement steam generators, each containing 3,592 thermally treated Alloy 690 tubes. The tubes have an outside diameter of 0.875 inch, a wall thickness of 0.050 inch, and are supported by seven stainless steel tube support plates and a baffle plate. Most of the tube support plate holes are quatrefoil shaped. The U-bend region of the tubes in rows 1 through 8 were stress relieved after bending.
The license provided the scope, extent, methods, and results of the steam generator tube inspections in the documents referenced above. In addition, the licensee described corrective actions (e.g., tube plugging or repair) taken in response to the inspection findings. Based on a review of the information provided, the NRC staff concludes that the licensee provided the information required by their technical specifications. In addition, the NRC staff concludes that there are no technical issues that warrant follow-up action at this time, since the inspection appears to be consistent with the objective of detecting potential tube degradation, and the inspection results appear to be consistent with industry operating experience at similarly designed and operated units.
North Anna Power Station, Unit No. 1 cc:
Mr. David A. Christian Senior Vice President and Chief Nuclear Officer Virginia Electric and Power Company Innsbrooks Technical Center 5000 Dominion Boulevard Glen Allen, VA 23060-6711 Mr. C. Lee Lintecum County Administrator Louisa County Post Office Box 160 Louisa, Virginia 23093 Ms. Lillian M. Cuoco, Esq.
Senior Counsel Dominion Resources Services, Inc.
Building 475, 5 th floor Rope Ferry Road Waterford, Connecticut 06385 Dr. W. T. Lough Virginia State Corporation Commission Division of Energy Regulation Post Office Box 1197 Richmond, Virginia 23218 Old Dominion Electric Cooperative 4201 Dominion Blvd.
Glen Allen, Virginia 23060 Mr. Chris L. Funderburk, Director Nuclear Licensing & Operations Support Dominion Resources Services, Inc.
Innsbrook Technical Center 5000 Dominion Blvd.
Glen Allen, Virginia 23060-6711 Office of the Attorney General Commonwealth of Virginia 900 East Main Street Richmond, Virginia 23219 Senior Resident Inspector North Anna Power Station U. S. Nuclear Regulatory Commission P. O. Box 490 Mineral, Virginia 23117 Mr. Daniel G. Stoddard Site Vice President North Anna Power Station Virginia Electric and Power Company Post Office Box 402 Mineral, Virginia 23117-0402 Dr. Robert B. Stroube, MD, MPH State Health Commissioner Office of the Commissioner Virginia Department of Health Post Office Box 2448 Richmond, Virginia 23218