ML20195D256
| ML20195D256 | |
| Person / Time | |
|---|---|
| Site: | Vogtle  |
| Issue date: | 11/02/1988 |
| From: | Hopkins J Office of Nuclear Reactor Regulation |
| To: | Hairston W GEORGIA POWER CO. |
| References | |
| NUDOCS 8811040301 | |
| Download: ML20195D256 (3) | |
Text
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November 2, 1988 7,.
Docket No.: '50-424 Mr. W. G. H irston, IIf Senior Vice President -
Nuclear Operations Georgia Power Cc apany l
P.O. Box 2625 Birmingham, Alabama 35202
Dear Mr. Hairston:
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SUBJECT:
V0GTLE UNIT 1 - LOCA REANALYSIS (TAC 68242)
~
By letters deted August 30 and October 19, 1988, you' withdrew your amendment t
.L request of May 19, 1938 to Technical Specification 3.2.2, "Heat Flux Hot Channel Factor-FQ(z)." Your reanalysis shows that a change to FQ(z) from 2.30
'to 2.25 is not needed to conipensate for increased containment spray flow.
The main differenice in the large break loss of coolant accident (LOCA) reanalysis from the original analysis was a reduced fuel rod backfill pressure 4
h-from 350 psia.to 275 psia. Bectuse of the reduced backfill pressure, the
.averige hot assenbly rod did' not burst in the reanalysis and, therefore, did not incer'a 270*F burst / blockage penalty that was in the original analysis.
As a result, your large break LOCA reanalysis meets 10 CFR 50.46. You also reviewed other accidents and verified that the increased containment spray flow rate did not adversely af fect those accident analyses.
The NRC staff has reviewed your submittals and fins that operation with an FQ(z) of 2,30 is acceptable. Contact me if you have any questions.
Sincerely Jon B. Hopkins, Project Manager Project Directorate 11-3 Division of Reactor Projects - 1/II Office of Reactor Regulation cc: See next rye DISTRIBUTION:-
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WASHING 10N, D. C. 20666 November 2, 1988 Docket No.:
50-424 Mr. W. G. Heirston, III Senior Vice President -
Nuclear Operations Georgia Power Company P.O. Box 2641 Birminghem, Alabama 35291-0400
Dear Mr. Hairston:
SUBJECT:
V0GTLE UNIT 1 - LOCA REANALYSIS (TAC 68242)
U By letters dated August 30 and October 19, 1988, you withdrew your amendment requitst of May 19, 1988 to Technical Specification 3.2.2, "Heat Flux Hot Channel Factor-FQ(z)." Your reanalysis shows that a change to FQ(z) from 2.30 to 2.25 is not needed to compensate for increased containment spray flow.
The main difference in the large break luss of coulant accident (LOCA) reanalysis from the original analysis was a reduced fuel rod backfill pressure from 350 psia to 275 psia. Because of the reduced backftll pressure, the average hot assembly ro6 did not burst in the reanalysis and, therefore, did not incur a 270'F burst / blockage penalty that was in the original analysis.
As a result, your large break LOCA reanalysis meets 10 CFR 50.46. You also reviewed other accidents and verified that the increased containment sprey flow rote did not adversely affect those accident analyses.
The NRC staff has reviewed your submittals and finds that operation with en F0(z) of 2.30 is acceptable.
Contact me if you have any questions.
i Sincerely, f
k, '
be i
JonB.Hopkins,lProjectManager s
Project Directorate 11-3 Divisio,. of Reactor Projects - I/II 1
Office of Nuclear Reactor Regulation cc:
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Mr. W. G. Hairston, III
- Georgia Power Company Vogtle Electric Generating Plant cc:
Mr. J. P. Kane Resident Inspector Manager, Licensing and Engineering Nuclear Regulatory Commission
' Georgia Power Company P.O. Box 572 P.O. Box 4545 Waynesboro, Georgia 30830 Atlanta, Georgia 30302 Doppish Kirkland, III, Counsel Mr. Ruble A. Thomas Office of the Consumers' Utility Executive Consultant Council Southern Company Services, Inc.
Suite 225 P.O. Box 2625 32 Peachtree Streat, N.E.
Birmingham, Alabama 35202 At1cita, Georgio 30302 lir. Paul D. Rice James E. Juiner
.Vice President & Project Director Troutman, Sanders, Lockerman, Georgia Power Company
& Ashmore Post Office Box 282 1400 Candler Building Waynesboro, Georgia 30830 127 Peachtree Street, N.E.
Atlanta, Georgia 30303 Mr. J. A. Bailey Project Licensing Manager Danny Feig Southern Company Services, Inc.
1130 Alta Avenue P.O. Box 2625 Atlanto, Georgia 30307 Birmingham, Alabamo 35202 Carol Stangler Ernest L. Blake, Jr.
Georgians Agoinst Nuclear Energy Bruce W. Churchill, Esq.
425 Euclid Terrace Shaw, Pittman, Potts and Trowbridge Atlanta, Georgia 30307 2300 N Street,11. W.
Washington, D. C.
20037 Mr. R. P. Mcdonald Executive Vice President -
Mr. G. Bockhold, Jr.
Nuclear Operations General llanager, Nuclear Operctions Georgia Power Company I
Georgia Power Company P.O. Box 2641 P.O. Box 1600 Birmingham, Alabama 35291-0400 Waynesboro, Georgia 30830 Regional Administrator, Region 11 lir. J. Leonard Ledbetter, Comissioner U.S. Nuclear Regulatory Commission Departirent of Natural Resources 101 Marietto Street, N.W., Suite 2900 270 Washington Street, NW Atlanta, Georgia 30323 Atlanta, Georgia 30334 Of fice of the County Comissioner Attorney General Burke County Commission Law Department Waynasboro, Georgia 30830 132 Judicial Building Office of Planning and Budget Room 615B 270 Weshington Street, S.W.
Atlanta, Georgia 30334
.