ML18153B354
| ML18153B354 | |
| Person / Time | |
|---|---|
| Site: | Surry  |
| Issue date: | 10/22/1993 |
| From: | Berkow H Office of Nuclear Reactor Regulation |
| To: | Stewart W VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.) |
| Shared Package | |
| ML18153B355 | List: |
| References | |
| TAC-M86961, TAC-M86962, NUDOCS 9310280192 | |
| Download: ML18153B354 (2) | |
Text
October 22, 1993 ~
Docket Nos. 50-280, 50-281 Mr. W. L. Stewart Senior Vice President - Nuclear Virginia Electric and Power Co.
5000 Dominion Blvd.
Glen Allen, Virginia 23060
Dear Mr. Stewart:
SUBJECT:
SURRY POWER STATION, UNITS 1 AND 2 - INSERVICE TESTING PROGRAM RELIEF REQUESTS P-1 AND P-11 (TAC NOS. M86961 AND M86962}
By letter dated June 29, 1993, you submitted Relief Request P-1 for Surry, Units 1 and 2, and Relief Request P-11 for Surry, Unit 1 only. Relief Request P-1 establishes a minimum of 0.05 in/sec for a vibration velocity reference value.
The use of the minimum vibration velocity reference value contained in the relief request was previously evaluated, and a 3-year interim period approval was granted by NRC letter dated August 27, 1990.
Your latest submittal requested an extension of the interim approval period for an additional 3 years or until the ASME O&M Working Group on Pumps completes its deliberations on this issue.
We have reviewed Relief Request P-1, and conclude that the proposed alternative to the Code requirements can be authorized until the end of the second 10-year interval pursuant to 10 CFR 50.55a(3}(i}, based on the alternative providing an acceptable level of quality and safety. If you intend to implement this relief request during the third 10-year interval, this relief request should be included in the third 10-year interval 1ST Program update.
Relief Request P-11 seeks approval to use a pump curve that accounts for changes in tide level to eliminate delays during testing in waiting for the proper tide level.
You proposed to use three data points to modify a small portion of the pump curve affected by the changes in tide level. Based on our review, we conclude that the use of three data points to modify the appropriate portion of the pump curve to account for changes in tide level is acceptable.
Our evaluation of both requests is enclosed.
Enclosure:
1ST Safety Evaluation OFFICE LA: PDII-2 NAME ETana
[-1{
DATE 10 /3 93 9310280192 931022 PDR ADDCK 05000280 p
PDR (Original sign~d by)
Aerbert N. BerKow, Director Project Directorate 11-2 Division of Reactor Projects - 1/11 Distribution B. Buckley M. Sinkule Docket File S. Varga. H. Berkow OGC NRC & Local PDRs G. Lainas E. Tana ACRS OGC.;),
10 r 93
e Mr. W. L. Stewart Virginia Electr;c and Power Company cc:
Michael W. Maupin, Esq.
Hunton and w;11;ams Riverfront Plaza, East Tower 951 E. Byrd Street Richmond, Virginia 23219 Mr. Michael R. Kansler, Manager Surry Power Station Post Office Box 315 Surry, Virginia 23883 Senior Res;dent Inspector Surry Power Station U.S. Nuclear Regulatory Commission Post Office Box 166, Route 1 Surry, Virginia 23883 Mr. Sherlock Holmes, Chairman Board of Supervisors of Surry County Surry County Courthouse Surry, Virginia 23683 Dr. W. T. Lough Virginia State Corporation Commission Division of Energy Regulation Post Office Box 1197 Richmond, Virginia 23209 Regional Administrator, Region II U.S. Nuclear Regulatory Commission 101 Marietta Street N.W., Suite 2900 Atlanta, Georgia 30323 Robert B. Strobe, M.D., M.P.H.
State Health Commissioner Office of the Commissioner Virginia Departm~nt of Health P.O. Box 2448 Richmond, Virginia 23218 Surry Power Station Attorney General Supreme Court Building 101 North 8th Street Richmond, Virginia 23219 Mr. M. L. Bowling, Manager Nuclear Licensing & Programs Innsbrook Technical Center Virginia Electric and Power Company 5000 Dominion Blvd.
Glen Allen, Virginia 23060