ML19260D271
| ML19260D271 | |
| Person / Time | |
|---|---|
| Site: | North Anna  |
| Issue date: | 01/21/1980 |
| From: | Ross D Office of Nuclear Reactor Regulation |
| To: | Proffitt W VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.) |
| References | |
| NUDOCS 8002080243 | |
| Download: ML19260D271 (3) | |
Text
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NUCLEAR REGULATORY COMMISSION g.g E
WASHINGTON, D. C. 20555 4
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jnN 211980 Docket Nos. 50-388 and 50-339 Mr. W. L. Proffitt Senior Vice President - Power Virginia Electric and Power Company Post Office Box 26666 Richmond, Virginia 23261
Dear Mr. Proffitt:
SUBJECT:
IllSTALLATI0il 0F IriSPECTION PORT Ort STEAM GEilERATORS AT tl0RTH AriflA POWER STATION, UtlITS 1 AtlD 2 Accumulating information indicates that the steam generators in commercial pressurized water reactors are showing problems including tube cracking, support plate corrosion and increased denting of steam generator tubes.
I am concerned that the progression of tube denting now occurring is not being adequately addressed with respect to ongoing investigations and to the development of preventative measures to eliminate this problen.
As you know, recent steam generator problems, such as occurred at your Surry Power Station, have led to extensive shutdown periods. The ilRC staff strongly believes increased surveillance measures are necessary to monitor the progression of tube denting in steam generators and to be able to remove tube sections for laboratory examination.
Therefore, to facilitate monitoring the progression of denting, access parts, similar to those at Surry and other plants, should be installed just c_7ve the upper support plate in each steam generator. These ports should be of adequate size and location to allow inspection of the upper support plate and upper support plate flow slots and to permit the removal of selected tubes.
Therefore, in addit )n to your December 10, 1979 connitment to install these inspection ports a florth Anna Power Station Unit 1 prior to restart after the second refueling, we require that you make a similar commitment for florth Anna Power Station Unit 2 prior to start of commercial operation.
Sincerely,
>4 RWi D.F.Ross,Jr.,jacting Director Division of Project Management Office of f$5 ear 8, ctor Regulation l
19 cc: See next page 5 02080&b
s Mr. W. L. Proffitt 1 580 Virginia Electric and Power Company cc: Mr. Anthony Gambardella Mr. Michael S. K'idd Office of the Attorney General V. S. Nuclear Regulatory Commission 11 South 12th Street - Room 308 P. O. Box 128 Richmond, Virginia 23219 Spotsylvania, Virginia 22553 Richard M. Foster, Esquire Director, Technical Assessnent Division 1230 A Pearl ;treet Office of Radiation Programs ( AW-459)
Denver, Colorado 80203 U. S. Environmental Protection Agency Crystal Mall #2 Michael W. Maupin, Esquire Arlington, Virginia 20460 Hunton, Williams, Gay and Gibson P. O. Box 1535 U. S. Environmental Protection Agency Richmond, Virginia 23212 Region III Office ATTN:
EIS C00RDINATCR Mrs. June Allen Curtis Building 412 Owens Drive 6th and Walnut Streets Huntsville, Alabama 35801 Philadelphia, Pennsylvania 19106 Mr. James Torson Alderman Library 501 Leroy Manuscripts Department Socorro, New Mexico 87801 University of Virginia Charlottesville, Virginia 22901 Mrs. Margaret Dietrich Route 2, Box 568 Mr. Edward Kube Gordonsville, Virginia 22042 Board of Supervisors Louisa County Courthouse Ellyn R. Weiss, Esquire P. O. Box 27 Sheldon, Harmon, Roisman and Weiss Louisa, Virginia 23093 1725 I Street, N.W., Suite 506 dashington, D. C.
20006 Mr. J. B. Jackson, Jr.
Commonweal th of Virginia Mr. James C. Dunstan Council on the Environment State Corporation Commission 903 Ninth Street Office Building Commonwealth of Virginia Richmond, Virginia 23129 Blandon Building Richmond, Virginia 23209 Mr. Paul W. Purdom Environmental Studies Institute Mr. A. D. Johnson, Chairman Drexel University Board of Supervisors of Louisa County 32nd and Chestnut Streets Trevillians, Virginia 23170 Philadelphia, Pennsylvania 19104 1938 149
s fir. W. L. Proffitt Virginia Electric and Power Company M 21 380 cc: Alan S. Rosenthal, Esquire Atomic Safety and Licensing Appeal Board U. S. Nuclear Regulatory Commission Washington, D. C.
20555 Michael C. Farrar, Esquire Atomic Safety and Licensing Appeal Board U. S. Nuclear Regulatory Commission Washington, D. C.
20555 Dr. Jchn H. Buck Atomic Safety and Licensing Appeal Board U. S. Nuclear Regulatory Commission Washington, D. C.
20555 Atomic Safety and Licensing Board Panel V. S. Nuclear Regulatory Commission Washington, D. C.
20555 1938 150