ML20005B741
| ML20005B741 | |
| Person / Time | |
|---|---|
| Site: | Hatch  |
| Issue date: | 08/17/1981 |
| From: | Stolz J Office of Nuclear Reactor Regulation |
| To: | Beckham J GEORGIA POWER CO. |
| References | |
| TAC-41019, TAC-41020, NUDOCS 8109020064 | |
| Download: ML20005B741 (3) | |
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'lW DISTRIBUTION CILocket FiW JStolz NRC POR MFairtile Dockets Hos. 321/366 L PDR RIngram TERA Gray File NSIC ORB #4 Rdg Mr. J. T. Beckham, Jr.
DEisenhut Vice President - Engineering Georgia Power Company P. O. Box 4545 ACRS-10 Atlanta, Georgia 30302
Dear Mr. Beckham:
In our letter of May 1980 we recorreended that you initiate a program to inspect 9 keyway and bore areas of your low pressure discs for stress corrosion cracking. This action was prompted by the discovery of such cracks in Westinghouse turbines.
So far, the inspection program has covered one or more low pressure rotors at 15 nuclear plants using GE turbines. 110 clear indication of stress 4
corrosion cracking has been discovered, although indications of water cutting and/or erosion have been observed in several turbines.
In view of these findings, we have decided to discontinue the HRR staff monitoring of these inspections. Nomal activities of the Office of Inspection and Enforcement will continue of course.
We recommend that you continue to perform disc inspections, as appropriate, and continue to work with General Electric Company to establish safe inspection schedules. Should you find any significant degradation, such as stress corrosion cracking, we would expect you to promptly report it in the normal manner.
Sjncerely, ORIGncLLgig;g 37 J01ClF. STOLE
- John F. Stolz, Chief l
I Operating Reactors Branch #4 Division of Licensing m
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August 17, 1981 Dockets Nos. 321/366 Mr. J. T. Beckham, Jr.
Vice President - Engineering Georgia Power Company P. O. Box 4545 Atlanta, Georgia 30302
Dear Mr. Beckham:
In our letter of May 1980 we recommended that you initiate a program to inspect the keyway and bore areas of your low pressure discs for stress corrosion cracking. This action was prompted by the discovery of such cracks in Westinghouse turbines.
So far, the inspection program has covered one or more low pressure rotors at 15 nuclear plants using GE turbines. No clear indication of stress corrosion cracking has been discovered, although indications of wa',ar cutting and/or erosion have been observed in several turbines.
In view of these findings, we have decided to discontinue the NRR staff monitoring of these inspections. Normal activities of the Office of Inspection and Enforcement will continue of course.
We recommend that you continue to perform disc inspections, as appropriate, and continue to work with General Electric Company to establish safe inspection schedules. Should you find any significant degradation, such as stress corrosion cracking, we would expect you to promptly report it in the normal manner.
Sincerely, W
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John F. Stolz, Chief Operating Reactors Branch #4 Division of Licensing cc: See next page 7
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s Hatch 1/2 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 Setthern Services, Inc.
Birmingham, Alabama 35202 Ozen Batum Charles H. Badger P. O. Box 2625 Office of Planning and Budget Southern Services, Inc.
Room 610 Birmingham, Alabama 35202 270 Washington Street, S.W.
Atlanta, Georgia 30334 Appling County Ccamissioners County Courthouse Baxley, Georgia 31513 Mr. L. T. Gucwa Georgia Power Company Engineering Department P. O. Box 4545 Atlanta, Georgia 30302 Mr. Max Manry Georgia Power Company Edwin I. Hatch Plant P. O. Box a42 Baxley, Georgia 31513 Regicnal 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 t)o.S. Nuclear Regulatory Conmission x ute 1, P. O. cox 279 Baxley, Georgia 31513