ML20041D200
| ML20041D200 | |
| Person / Time | |
|---|---|
| Site: | Hatch  |
| Issue date: | 02/10/1982 |
| From: | Novak T Office of Nuclear Reactor Regulation |
| To: | Beckham J GEORGIA POWER CO. |
| References | |
| TAC-47885, TAC-49705, NUDOCS 8203040512 | |
| Download: ML20041D200 (3) | |
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lir. J. T. Beckham, Jr.
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Vice President - Engineering i
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P. O. Box 4545 6
Atlanta, Georgia 30302 N
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Dear fir. Beckhan:
This letter confims the oral authorization issued by the !!RC staff on February 8,1982, to R. Baker, Georgia Power Company, for a one-time change in Technical Specification 3.7.A.5b, "0xygen Concentration".
The change permitted an extension in tine interval, fron 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> to 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />, before the oxygen concentration in the drywell shall be reduced to 4%, after the reactor is placed in the Run Fode. The extension in time runs out at 3:00 p.m. EST, on Wednesday, February 10, 1932. We concluded the change was acceptable based on the enclosed evaluation.
As an extension in drywell inerting necessitates an extension of time in the interval needed to implement differential pressure between the drydell and suppression chanber as required by Section 3.7.A.7(1) of the Technical Specifications, we likewise extend the tire interval to establish the differential pressure to 3:00 p.m. EST, February 10, 1932.
The differential pressure cannot be established until inerting is completed as the containment vents are open during inerting. D e change was initiated by a telephone call fron R. Baker of Georgia Power Company, on February 8,1932, to !!. B. Fairtile, followed by a telecopied letter request, the same day.
An official anendment and appropriate Federal Renister flotice will be fomarded in the near future.
Sincerely, P!e!m i
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ed g-50' Thonas it.1:ovaFI, Assistant Director 88 for Operating Reactors og Division of Licensing ed Es
Enclosure:
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L PDR DEisenhut Gray File-2 Docket File TERA RIngram TBarnhart-4 NRC PDR NSIC MFai rtile LSchneider ORB #4 Rdg 0 ELD RDiggs Docket No. 50-321 AEH AE0D CMiles IE-3 ASLAB ACRS-10 11r. J. T. Beckham, Jr.
Vice President - Engineering Georgia Power Company P. O. Box 4545 Atlanta, Georgia 30302
Dear Mr. Beckham:
lhis letter confirms the oral authorization issued by the NRC staff on February 8,1982, through a telephone call from H. B. Fairtile, HRC to R. Baker, Georgia Power Company, for a one-tine change in Technical Specification 3.7. A.5b, "0xygen Concentration". The change permitted an extension in time interval, from 24 ho1rs to 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />, before the oxygen concentration in the drywell shal; be reduced to 4%, after the reactor is placed in the Run flode. The extension in time runs out at 3:00 p.m. EST, on Wednesday, February 10, 1982.
He concluded the change was acceptable based on the enclosed evalua-tion. As an extension in drywell inerting necessitates an extension of time in the interval needed to imptenent differential pressure between the drywell and suppression chamber as mquired by Section 3.7.A.7(1) of the Technical Specifications, we likewise extend the time interval to establish the differential pressure to 3:00 p.m.
EST, February 10, 1982. The differential pressure cannot be estab-lished until inerting is completed as the containment vents are open during inerting. The change was initiated by a telephone call from R. Baker of Georgia Power Company, on February 8,1982, to it. B.
Fairtile, followed by a telecopied letter request, the same day.
An official amendnent and appropriate Federal Renister Hotice willlbe fonvarded in the near futum.
Sincerely, Thomas 11. Novak, Assistant Director for Operating Reactors Division of Licensing
Enclosure:
Safety Evaluation cc w/ enclosure:
See next page M$
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WASHINGTON, D. C. 20555 r.
SAFETY EVALUATION BY THE OFFICE OF NUCLEAR REACTOR REGULATION SUPPORTING AMENDMENT NO.
TO FACILITY OPERATING LICENSE NO.'DPR-57
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GEORGIA POWEP COMPANY C.3 0GLETHORPE POWER CORPORATION i
MUNICIPAL ELECTRIC AUTHORITY OF GEORGIA 2
CITY OF DALTON, GEORGIA EDWIN I. HATCH NUCLEAR PLANT, UNIT 1 DOCKET NO. 50-321 The Hatch Unit 1 Technical Specifications in Section 3.7.A.5.b requires that the containnent atmosphere oxygen concentration shall be reduced to less than 4% by volume, within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> of placing the reactor in the "Run Mode".
Hatch 1 was starting up in power after a m&intenance shutdown, and placed the selector switch in the run mode at 3:00 p.m. on Sunday, February 7,1982. The station had sufficient liquid nitrogen stored on site to bring the containment down to a 4% 0, concentration but due to operating difficulties the liquid N2 supply was depTeted before 4% could be attained. Replacement liquid N2 is on the way to the plant but won't arrive until about midnight on February 8,1982, which is nine hours after the Liniting Conditions for Operation of 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> runs out. By telephone at 9:30 a.m., February 8,1982, the licensee, Georgia Power Company (Ray Baker), requested a 48 hour5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br /> extension of the LC0 until 3:00 p.m., Wednesday, February 10, 1982.
The bases of Georgia Power Company's request is as follows:
1.
The containment atmosphere has been brought down to a 7%'02 concentration.
2.
About half the fuel is new fuel', having seen only about a month of burnup, thus the stored energy is relatively low, in regard to LOCA calculations; 3.
Due to preconditioning limitations on power ascension the reactor will only attain 50% of full power by the end of the 48 hour5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br /> extension; and, G 'M 4.
There is very low likelihood of an accident in the 48 hour5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br /> interval.@We conclude, based on the reasons given above, that an extension of 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br /> in the Limiting Conditions for Operation of Technical Specification 3.7.A.5.b, d#not pose an unacce table risk to the health and safety of the public.
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February 10, 1982 Docket No. 50-321 Mr. J. T. Beckham, Jr.
Vice President - Engineering Georgia Power Company P. O. Box 4545 Atlanta, Georgia 30302
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Dear Mr. Beckham:
This letter confirms the oral authorization issued by the NRC staff on February 8,1982, to R. Baker, Georgia Power Company, for a one-time change in Technical Specification 3.7 A.5b, " Oxygen Concentration".
The change permitted an extension in time interval, from 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> to 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />, before the oxygen concentration in the drywell shall be reduced to 4%, after the reactor is placed in the Run Mode. The extension in time runs out at 3:00 p.m. EST, on Wednesday, February 10, 1982. We concluded the change was acceptable based on the enclosed evaluation.
As an extension in drywell inerting necessitates an extension of time l
in the interval needed to implement differential pressure between the drywell and suppression chamber as required by Section 3.7.A.7(1) of the Technical Specifications, we likewise extend the time interval to l
establish the differential pressure to 3:00 p.m. EST, February 10, 1982.
The differential pressure cannot be established until inerting is i
l completed as the containment vents are open during inerting.
The change was initiated by a telephone call from R. Baker of Georgia Power Company, on February 8,1982, to M. B. Fairtile, followed by a telecopied letter request, the same day.
An official amendment and appropriate Federal Register Notice will be forwarded in the near future.
Sincerely, Thomas M. Novak, Assistant Director for Operating Reactors Division of Licensing i
i
Enclosure:
Saisty Evaluation cc w/ enclosure:
See next page l
L
o Hatch 1/2 50-321/366 Georgia Power Company cc w/ enclosure (s):
Mr. James P. O'Reilly, Regional Administrator ots$ndTrowbridge ha,
t a Regio I 1800 M Street, N.W.
101 Marietta Street, Suite 3100 Washington, D. C.
20036 Atlanta, Georgia 30303 Ruble A. Thomas Vice President P. O. Box 2625 t
Southern 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 Chainnan Appling County Commissioners 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 442 1
Baxley, Georgia 31513 N
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 fir. R. F. Rogers U. S. iluclear Regulatory Commission Route 1, P. O. Box 279 Baxley, Georgia 31513 i
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SAFETY EVALUATION BY THE OFFICE OF NUCLEAR REACTOR REGULATION FACILITY OPERATING LICENSE NO. DPR-57 l
GEORGIA POWER COMPANY OGLETHORPE POWER CORPORATION MUNICIPAL ELECTRIC AUTHORITY OF GEORGI A CITY OF DALTON, GEORGIA 1
EDWIN I. HATCH NUCLEAR PLANT, UNIT 1 DOCKET NL 50-321 The Hatch Unit 1 Technical Specifications in Section 3.7. A.5.b require that the containment atmosphere oxygen concentration shall be reduced to less than 4% by volume, within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> of placing the reactor in the "Run Mode".
Hatch 1 was starting up in power after a mhintenance shutdown, and placed the selector switch in the run mode at 3:00 p.m. on Sunday, February 7,1982. The station had sufficient liquid nitrogen stored on site to bring the containment down to a 4% 0, concentration but due to operating difficulties the liquid N2 supply was depTeted before 4% could be attained. Replacement liquid N2 is on the way to the plant but won't arrive until about midnight on February 8,1982, which is nine hours after the Liniting Conditions for Operation of 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> runs out. By telephone at 9:30 a.m., February 8,1982, the licensee, Georgib Power Company (Ray Baker), requested a 48 hour5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br /> extension of the LC0 until 3:00 p.m., Wednesday, February 10, 1982.
The bases of Georgia Power Company's request is as follows:
1.
The containment atmosphere has been brought down to a 7% '02 concentration.
2.
About half the fuel is new fuel', having seen only about a month of burnup, thus the stored energy is relatively low, in regard to LOCA calculations; 3.
Due to preconditioning limitations on power ascen'sion the reactor will only attain 50% of full power at most by the end of the 48 hour5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br /> extenslon; and, 4.
There is very low likelihood of an accident in the 48 hour5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br /> interval.
We conclude, based on the reasons given above, that an extension of 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br /> in the Limiting Conditions for Operation of Technical Specification 3.7.A.5b,'does not pose an unacceptable risk to the health and safety of the public.
Dated: February 10, 1982 i