ML20149L195
| ML20149L195 | |
| Person / Time | |
|---|---|
| Site: | North Anna  |
| Issue date: | 07/29/1997 |
| From: | Edison G NRC (Affiliation Not Assigned) |
| To: | Ohanlon J VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.) |
| Shared Package | |
| ML20149L198 | List: |
| References | |
| TAC-M98276, NUDOCS 9707310181 | |
| Download: ML20149L195 (3) | |
Text
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[ f rer g kl UNITED STATES s
g NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20666-0001
%*****p July 29, 1997 Mr. J. P. O'Hanlon Senior Vice President - Nuclear Virginia Electric and Power Company 5000 Dominion Blvd.
Glen Allen, Virginia 23060
SUBJECT:
NORTH ANNA POWER STATION, UNIT 2 - ASME SECTION XI RELIEF REQUESTS NDE-33, 34, AND 35 - REACTOR COOLANT SYSTEM (TAC NO. M98276)
Dear Mr. O'Hanlon:
The NRC staff has evaluated the information provided in your January 28, 1997, submittal related to your inservice inspection program relief requests NDE-33, 34, and 35.
Based on the evaluation of relief request HDE-33, we conclude that the Code-required 100% volumetric examination of the reactor coolant pump-to-loop pipe circumferential welds 9 and 20 would have constituted an undue burden on Virginia Electric and Power Company (VEPC0) since the examination is not practical due to geometrical constraints imposed by the reactor coolant pump nozzle construction, and imposition of this requirement would require significant design modifications.
Based on the evaluation of relief request NDE-34, we conclude that the Code-required 100% volumetric and surface examination of the pipe-to-flange o
circumferential weld SW-13 would have constituted an undue burden on VEPC0 since the examination is not practical due to geometrical constraints imposed by the piping support, and imposition of this requirement would require signif% u t design modifications to the pipe and/or support.
Based on the evaluation of relief request NDE-35, we conclude that the Code-required 100% volumetric and surface exaniination of the reactor pressure vessel closure head-to-flange weld would have constituted an undue burden on VEPC0 since the examination is not practical due to the proximity of the lifting lug, the configuration of the weld restricts access, and imposition of this requirement would require extensive design modifications.
Based on the impracticality of meeting the Code coverage requirements for the three welds detailed above, and the reasonable assurance provided by the surface and volumetric examinations that were completed, the relief is granted pursuant to the provisions of 10 CFR 50.55a(g)(6)(1).
The granting of this relief is authorized by law and will not endanger life or property or the comr.on defense and security and is otherwise in the public interest giving due consideration to the burden upon VEPC0 that could result if the requirements were imposed on the facility.
The staff's evaluation and conclusions are
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. The staff has completed its evaluation of this matter and we are, therefore, closing out TAC No. M98276.
Sincerely, (Original Sign 6d By)
Gordon E. Edison, Acting Director Project Directorate 11-1 Division of Reactor Projects-I/II l
Office of Nuclear Reactor Regulation l
Docket No.
50-339 l
Enclosure:
As stated cc w/ encl:
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Mr. J. P. O'Hanlon North Anna Power Station 1
Virginia Electric & Power Company Units 1 and 2 i
cc:
Mr. J. Jeffrey Lunsford County Administrator Regional Administrator, Region II Louisa County U.S. Nuclear Regulatory Commission P.O. Box 160 Atlanta Federal Center 4
Louisa, Virginia 23093 61 Forsyth St., SW, Suite 23T85 Atlanta, Georgia 30303 Michael W. Maupin, Esquire Hunton and Williams Mr. W. R. Matthews, Manager Riverfront Plaza, East Tower North Anna Power Station 1
951 E. Byrd Street P. O. Box 402 Richmond, Virginia 23219 Mineral, Virginia 23117 3
Dr. W. T. Lough Mr. Al Belisle i
Virginia State Corporation U.S. Nuclear Regulatory Commission i
Commission Atlanta Federal Center Division of Energy Regulation 61 Forsyth St., SW, Suite 23T85 P. O. Box 1197 Atlanta, Georgia 30303 Richmond, Virginia 23209 Mr. David Christian, Manager 4
Old Dominion Electric Cooperative Surry Power Station 4201 Dominion Blvd.
Virginia Electric and Power Company Glen Allen, Virginia 23060 5570 Hog Island Road Surry, Virginia 23883 Mr. M. L. Bowling, Manager Nuclear Licensing & Operations Support Virginia Electric and Power Company Innsbrook Technical Center 5000 Dominion Blvd.
Glen Allen, Virginia 23060 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 1024 Haley Drive Mineral, Virginia 23117 dobert B. Strobe, M.D., M.P.H.
State Health Commissioner Office of the Commissioner Virginia 9epartment of Health P.O. Box 2448 Richmond, Virginia 23218