ML20024D361
| ML20024D361 | |
| Person / Time | |
|---|---|
| Site: | North Anna  |
| Issue date: | 07/25/1983 |
| From: | Clark R Office of Nuclear Reactor Regulation |
| To: | Stewart W VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.) |
| References | |
| NUDOCS 8308040639 | |
| Download: ML20024D361 (3) | |
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99 (qs-oNo JUL 2 51983 DISTRIBUTION:
J ocket File NRC PDR Docket Nos. 50-338 L PDR and 50-339 NSIC ORB #3 Rdg DEisenhut OELD Mr. W. L. Stewart
.EJordan Vice President - Nuclear Operations JTaylor Virginia Electric and Power Company ACRS-10 Post Office Box 26666 Gray File Richmond, Virginia 23261 RAClark PMKreutzer-3
Dear Mr. Stewart:
LEngle JDonohue
SUBJECT:
REQUEST FOR ADDITIONAL INFORMATION; MAIN TRANSFORMER FAILURES (MTFs) AT THE NORTH ANNA POWER STATION, UNITS NO.1 AND NO. 2 (NA-1&2)
On July 14,1983, a site visit was made by NRR and its consultant, the Lawrence Livermore National Laboratory (LLNL).. The purpose of the visit was to acquaint LLNL with the physical layout of NA-1&2 with regards to the subject noted above.
In' addition, a general discussion was held with the VEPCO staff where NRR addressed certain questions to VEPC0 regarding MTFs at NA-1&2. These questions a're provided in the enclosure to this letter.
We request that the additional infonnation be provided for our review by August 17, 1983.
Please advise us of your submittal date regarding this ' matter.
The information requested in' this letter affects fewer than 10 respondents; themfore, OMB clearance 1.s not required under P. L.96-511.
Sincerely, Original signed by Robert A. Clark Robert A. Clark, Chief Operating Reactors Branch #3 Division of Licensing Enclosum: Request for Additional Information
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- U.S. GPO 1983-400-247
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.y Virginia Electric and Powar Company cc:
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Richard M. Foster, Esq.
Musick, Williamson, Schwartz, Leavenworth & Cope, P.C.
P. O. Box 4579 Boulder, Colorado 80306 Mrs. Margaret Dietrich Route 2, Box 568 Michael W. Maupin, Esq.
Gordonsville, Virginia 22042 Hunton, Williams, Gay and Gibson P. O. Box 1535 Mr. W. T. Lough Richmond, Virginia.23212 Virginia Corporation Commission Division of Energy Regulation Mr. Paul W. Purdom P. O. Box 1197 Environmental Studies Institute Richmond, Virginia 23209 Drexel University 32nd and Chestnut Streets Mrs. June Allen Philadelphia, Pennsylvania 19104 North Anna Environmental Coalition 8720 Lockmoor Circle Atomic Safety and Licensing Wichita, Kansas 67207 Appeal Board Panel U.S. Nuclear Regulatory Commission U.S. Environmental Protection Agency Washington, D. C.
20555 Region III Office ATTN:
Regional Radiation Representative Ellyn R.. Weiss, Esq.
Curtis Building Sheldon, Harman, Roisman and Weiss 6th and Walnut Streets 1725 I Street, N.W. Suite 506 Philadelphia, Pennsylvania 19106 Washington, D. C.
20006 Regional Administrator Mr. E. W. Harrell &
Nuclear Regulatory Commission, Region II P. O. Box 402 Office of Executive Director for Operations Mineral, Virginia 23117 101 Marietta Street, Suite 3100 Atlanta, Georgia 30303 Mr. Anthony Gambardella Office of the Attorney General
- 11. South 12th Street - Room 308 Richmond, Virginia 23219 Resident Inspector / North Anna c/o U.S.N.R.C.
l Route 2, Box 78A Mineral, Virginia 23117 Mr. J. H. Ferguson Executive Vice President - Power Virginia Electric and Power Company Post Office Box 26666 Richmond, Virginia 23261 I
ENCLOSURE Request For Additional Information Virginia Electric & Pcwer Company North Anna Power Station, Units No. 1 and No. 2 Docket Nos. 50-338 and 50-339 (1) Submit a summary of the tests performed by VEPC0 on each of the seven transformers prior to their failure. The summary should include type of test, test results, and test acceptance criteria (noting at what point VEPC0 would consider the transformer suspect).
Also address all other test types which may be a part of VEPCO's normal routine maintenance procedures.
(2) Westinghouse Drawing HAM 707.03 indicates the main transformer is shipped on its side.
Submit a summary of VEPCO's shipping procedures and practices.
(3) Submit a summary of the modifications to the main transformer and generator systems completed and planned as a result of the failures. The summary should also include any additions or changes in the administrative, maintenance, and fire protection procedures.
(4) Submit a summary on the amount of shutdown time incurred as a result of the main transformer failures.
(5) Submit the results of VEPC0's investigation on the seventh main transformer failure.
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