ML20217E232
| ML20217E232 | |
| Person / Time | |
|---|---|
| Site: | North Anna  |
| Issue date: | 09/24/1997 |
| From: | Edison G NRC (Affiliation Not Assigned) |
| To: | Ohanlon J VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.) |
| Shared Package | |
| ML20217E237 | List: |
| References | |
| GL-90-05, GL-90-5, TAC-M98527, NUDOCS 9710060401 | |
| Download: ML20217E232 (3) | |
Text
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o UNITED STATES
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NUCLEAR REGULATORY COMMISSION WASHINGTON. D.C. - aaat g
September 24, 1997 Mr. J. P. O'Hanlon Senior Vice President - Nuclear Virginia Electric and Power Company 5000 Dominion Blvd.
Glen Allen. Virginia 23060 SUB1ECT:
NORTH ANNA POWER STATION UNIT 1 - ASME SECTION XI RELIEF REQUEST NDE 36 - SERVICE WATER SYSTEM (SWS) LEAKS (TAC NO. M98527)
Dear Mr. O'Hanlon:
The NRC staff has evaluated the information provided in your April 29. 1997 submittal related to the inservice inspection program relief request NDE 36.
Based on 'he evaluation of relief request NDE 36 it is concluded the repair t
would have necessitated removing portions of the SWS which might have leaked in the past due to microbiologically induced corrosion (MIC) that are otherwise structurally sound and capable of performing their intended safety t
function. This would have unnecessarily reduced the margin of safety of the I
SWS. Therefore, the immediate Code repair during the >eriod March 19. 1997, through May 15. 1997, would have constituted an undue aurden on Virginia Electric and Power Company (VEPCO).
Your alternative program for this period included evaluation of the flaws which is consistent with the guidelines and acceptance criteria of Generic letter (GL) 90-05. The staff finds the structural integrity and operability assessments to be acceptable.
You have stated that during the period of March 19, 1997, through May 15. 1997, the welds were monitored by plant personnel and all the flaws were repaired by May 15. 1997.
In addition, you had evaluated the defective areas and determined that the flaws were acceptable and the SWS was determined to be operable.
While the impracticality of the Code requirements was not shown the staff finds that relief may be granted pursuant to 10 CFR 50.55a(a)(3)(11). The staff's evaluation and conclusions are contained in the Enclosure, t)#
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2-The staff has completed its evaluation of this matter and we are, therefore, closing out TAC No, M98527.
Sincerely.
l (Original Signed By)
Goron E. Edison. Acting Director Project Directorate 11 1 Division of Reactor Projects - 1/11 Office of Nuclear Reactor Regulation Docket No. 50 338
Enclosure:
As stated cc w/ encl: See next page
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t Mr. J. P. O'Hanlon North Anna Power Station Virginia Electric & Power Company Units 1 and 2 4
I cc:
Mr.- J. Jeffrey Lunsford l
County Administrator Regional Administrator ReDion 11 Louisa County U.S. Nuclear Regulatory Commission P.O. Box 160 Atlanta Federal Center l
l Louisa. Virginia 23093 61 Forsyth St., SW. Suite 23T85 t
Atlanta, Georgia 30303 i
MichaelW.Haugin. Esquire hanton and Wil 1ams Mr. W. R. Matthews Manager i
i Riverfront Plaza. East Tower North Anna Power Station 951 E. Byrd Street P. O. Box 402 i
Richmond, Virginia 23219 Mineral. Virginia 23117 l
Dr. W. T. Lough Mr. Al Belisle t
Virginia State Corporation U.S. Nuclear Regulatory Commission l
1 Commission Atlanta Federal Center i
Division of Energy Regulation 61 Forsyth St.. SW. Suite 23T85 P. O. Box 1197 Atlanta. Georgia 30303 p
Richmond.' Virginia 23209 Mr. David Christian. Manager Old Dominion Electric Cooperative Surry Power Station l
4201 Dominion Blvd.
Virginia Electric and Power Company Glen Allen. Virginia 23060 5570 Ho Surry, g Island Road Virginia 23883.
Mr. M. L. Bowling Manager Nuclear Licensing & Operations Support Virginia Electric and Power Company Innsbrook Technical Center 5000 Dominion Blvd.
Gl_en Allen._ Virginia 23060 Office of the Attorney General CommonwealthafVirginia 900 East Main Street Richmond, Virginia 23219 Senior Resident Int.pector North Anna Power Station U.S. Nuclear Regulatory Commission 1024 Hale Mineral. y Drive Virginia 23117 Robert B.-Strobe M.D., M.P.H.
State Health Commissioner Office cf the Commissioner
- Virginia Department of Health P.O. Box 2448 Richmond. Virginia 23218
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