ML18153B556
| ML18153B556 | |
| Person / Time | |
|---|---|
| Site: | Surry  |
| Issue date: | 11/21/1988 |
| From: | Chandu Patel Office of Nuclear Reactor Regulation |
| To: | Cartwright W VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.) |
| References | |
| TAC-71033, TAC-71034, NUDOCS 8811290246 | |
| Download: ML18153B556 (3) | |
Text
~,...,,..,
~
Docket Nos. 50-280 and 50-281 Mr. W. R. Cartwright Vice President-Nuclear Virginia Electric and Power Company 5000 Dominion Blvd.
Glen Allen, Virginia 23060
Dear Mr. Cartwright:
November 21 9 1988
SUBJECT:
SERVICE WATER SYSTEM DESIGN AT SURRY UNITS 1 AND 2 (TAC NOS. 71033 AND 71034)
As a result of the recent Safety System Functional Inspection at the Surry site, we are evaluating the service water system's performance in the event of a hurricane as required by General Design Criterion 2.
In order to fully address this issue, we have determined that additional information is needed as indicated in the Enclosure.
We request your response within 30 days of the date of this letter. If you can not provide a full response within the requested time, please provide your full response schedule within 30 days of the date of this letter.
The reporting and/or recordkeeping requirements contained in this letter affect fewer than 10 respondents; therefore, 0MB clearance is not required under P.L.96-511.
Enclosure:
As stated cc w/enclosure:
See next page L~.Jf>.
D er.
1 /W88 r.JJP PM :'1'{) II -2 CPatel/jd 11/ JC, /88 D: PDI'l~
HBerk~" 1 11/~, /88 Sincerely, Ortg,:nal stgned by Chandu P. Patel, Project Manager Project Directorate II-2 Division of Reactor Projects-I/II Office of Nuclear Reactor Regulation DISTRIBUTION s-*Doc.ket Fi 1 e 1
-~-.~..... _. **,*-----*.---
~
NRC & Local PDRS S. Varga G *. Lainas D. Miller C. Pate 1 OGC (for info only)
E. Jordan B. Grimes ACRS (10)
Gray File
~-~------------------ -- --------
Mr. W. R. Cartwright Virginia Electric and Power Company cc:
Mr. Michael W. Maupin Hunton and Williams Post Office Box 1535 Richmond, Virginia 23212 Mr. David L. Benson, Manager Surry Power Station Post Office Box 315 Surry, Virginia 23883 Resident 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 W. T. Lough Virginia 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 C. M. G. Buttery, M.D., M.P.H.
Department of Health 109 Governor Street Richmond, Virginia 23219 e
Surry Power Station Attorney General Supreme Court Building 101 North 8th Street Richmond, Virginia 23219
__J
~*
ENCLOSURE REQUEST FOR ADDITIONAL INFORMATION SERVICE WATER SYSTEM AT SURRY UNITS 1 AND 2 During the Safety System Functional Inspection of the Surry Units 1 and 2 service water system conducted in September 1988, the staff identified a concern with regard to the ability of the service water system to perform its safety function during a hurricane as required by General Design Criterion 2.
Specifically, following a hurricane, Section 2.3 of the UFSAR indicates that the level in the service water discharge canal will be 24 feet 4 inches and the inlet canal level will be 26 feet.
With the resultina differential head of approximately li feet, sufficient driving head to ensure adequate service water system flow to required components may not be available.
Therefore, please provide the results of your analysis which confirms that in the event of a hurricane and loss of offsite power to both units, sufficient service water flow is provided to equipment necessary to ensure a safe hot shutdown.
A concurrent design basis event (LOCA) need not be postulated.
Further, please identify the necessary actions and times to achieve and main-tain cold shutdown under these conditions.