ML20010E561
| ML20010E561 | |
| Person / Time | |
|---|---|
| Site: | Hatch  |
| Issue date: | 08/26/1981 |
| From: | Stolz J Office of Nuclear Reactor Regulation |
| To: | Beckhan J GEORGIA POWER CO. |
| References | |
| NUDOCS 8109040264 | |
| Download: ML20010E561 (3) | |
Text
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AUGUST G 1981 Docket Nos. 50-321 dk and 50-356
,S[/ ({g GM Mr. J. T. Beckhan, Jr. (16/333)
W1U Vice President - Engineering 4
Georgia Power Company
-J JEP 01198W 1 P. O. Box 4545 t, v.s.gf '
Atlanta, Georgia 30302
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RE: HATCH UNIT !!05.1 AND 2 N
Dear Mr. Beckham:
On July 2,1981, we sent a letter to all licensees who have requested approval to operate on a continuing basis at power levels above 50% with only one recirculation loop in the event the other loop is inoperative. You and other BUR licensees received a copy of one of these letters since we expect most BWR facilities would like to have this flexibility.
In the letter we proposed a necting to obtain a better understanding of what might have caused variations in jet punp flow and related parameters at Browns Ferry Unit No. I during single loop operation and how this incident should affect approval of single loop operation at other facilities.
You have indicated to your IJRC project manager that you are interested in attending the proposed reeting. The meeting will be held at 9:00 A.M.,
Wednesday, Septeober 9,1981 in room P-118, Phillips Building, 7920 Horfolk Avenue, Pethesda, Maryland. You are requested to advise your project manager of the people who will be attending this reeting from your organization.
Sincerely, aen1on*,*,3 Icm af J0id F. HUL7.*
John Stolz, Chief Operating Reactors Branch #4 Division of Licensing
Enclosure:
Peeting Agenda cc w/ enclosure See next page Distribut Mr 'tn:
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Hatch 1/2
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' Georgia Power Company 50-321/366 cc w/ enclosure (s):
G. F. Trowbridge, Esq.
Shaw, Pittman, Potts and Trowbridge 1800 M Street,' N.W.
Washington, D. C.
20036 Ruble A. Thomas Vice President P. O. Box 2625 Southern Services, Inc.
Birmingham, Alabama 35202 Ozen'Batum Charles H. Badger P. O. Box 2525 Office of Planning and Budget Southern Services, Inc.
Room 610 Birmingham, Alabama 35202 270 Washington Street, S.W.
Atlanta, Georgia 30334 Chai rman Appling County Commissioners County Courthouse Baxley, Georgia 31513 Mr. L. T. Gucwa Georgia Power Company Engineering Department P. O. Box 4545 Atlanta, Geo~rgia 30302 Mr. Max Manry Georgia Power Company Edwin. I. Hatch Plant P. O. Box ?42 Baxley, Georgia 31513 Regional Radiation Representative EPA Region IV 345 Courtland Street, N.E.
Atlanta, Georgia 30308 Appling County Public Library 301 City Hall Drive Baxley, Georgia 31513 Mr. R. F. Rodgers U.S. Nyclear Regulatory Cor. mission Route i, P. O.
ox 279 Baxicy, Georgia 31513 d
t.
Proposed Meeting with BWR Applicants and Licensees on Sir.gle Leop Cperation Furpose of Meeting:
1.
To determine what may have caused the jet pump flow and other variations experienced by Browns Ferry Unit 1 during single loop operation and 2.
Evaluate whether the Browns Ferry experience should result in power' limits for other SWRs operating on a single loop.
Agenda:
1.
Discussion of what cay have caused the unexpected variations in operating parameters when Browns Ferry Unit' 1 exceeded about 60 pe cent rated power while operating with only one recirculation loop.
2.
Discussion of parameter; affeu:ed at Browns Ferry 1 (i.e., jet pump flow, neutron flux, core ficw, core pressure drop, etc.)
3.
Discussion of whether the Browns Ferry 1 experience would be expected 'at other SWRs operating on one recirculation loop.
If soy _are safety limits.likely to be violated or cause complications with respect to core
-stability, core flow symmetry, pump cavitation or camage to the jet pumps and reactor vessel internals.
a.
Discussion of the benefits vs. pctential probla s and cs: of testing single loop cperation in anc-her EWR that is instrumented to dete:: what parameters are a^fec ed.
5.
- Ev'alua-ion of whether sin $le loco operation at power levels about ED to 55 percant is a saf a and prudent means of reac c. operation.
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