ML20058E349
| ML20058E349 | |
| Person / Time | |
|---|---|
| Site: | Hatch  |
| Issue date: | 07/23/1982 |
| From: | Beckham J GEORGIA POWER CO. |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| TAC-56045, TAC-56046, NUDOCS 8207280160 | |
| Download: ML20058E349 (2) | |
Text
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- July 23, 1982 Georgia Power
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J. T. Beckham. Jr.
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Director of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission Washington, D. C.
20555 NRC DOCKETS 50-321, 50-366 OPERATING LICENSES DPR-57, NPF-5 EDWIN I. HATCH NUCLEAR PLANT UNITS 1, 2 REQUEST FOR EXEMPTION 10 CFR 50.44 REQUIREMENTS RELATED TO HYDR 0 GEN CONTROL Gentlemen:
10 CFR 50.44, " Interim Requirements Related to Hydrogen Control," was published in the Federal Register on December 2, 1981.
Section (c)(3)(ii) requires that each light-water reactor which relies upon a
purge /repressurization system as the primary means for controlling combustible gases following a LOCA shall be provided with either an internal recombiner or the capability to install an external recombiner following the start of an accident.
Plant Hatch Unit 2 was initially licensed with a non-inerted primary containment and hydrogen recombiners.
The license has since been amended to require the primary containment to be inerted under 10 CFR 50.44 and Appendix R to 10 CFR 50 and, therefore, meets requirements related to combustible gas control.
Unit I has an inerted containment but no hydrogen recombiner.
Georgia Power Company is participating in the Hydrogen Control Committee of the BWR Owners' Group.
In June 1982 that group published General Electric Company topical report, NE00-22155, " Generation and Mitigation of Combustible Gas Mixtures in Inerted BWR Mark I Containments" in which, using conservative assumptions, it was shown that an inerted BWR Mark I containment is adequate for control of combustible gases without hydrogen recombiners or containment venting.
A copy of the report was sent to the NRC under cover letter from the BWR Owners Group dated June 21, 1982.
GPC has examined the report and determf ad that the assumptions and the conclusions made are applicable to Plant Hatch Unit 1.
Therefore, we request the NRC to affirm that Unit 1 is exempt from the requirement for an internal recombiner or the capability to install a recombiner because the plant does not rely on a purge /repressurization system as the primary means for controlling combustible gases following a LOCA.
0 8207280160 820723 PDR ADOCK 05000321 P
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Georgia Power d DirectorbfNuclearReactor. Regulation U. S. Nuclear Regulatory Commission' Washington, D.
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20555 '
s July 23, 1982 Page Two' s
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If this affirmation i s' not made,! we request an extension in implementation schedule until the first refueling outage af ter receipt of necessary materials at the plant.- The extension would be required to permit time for procurement of isolation valves and piping required either to s
connect f Unit 1 to the Unit 2 recombiner or to provide connections for a portable recocbiner.
The, rule requires that modifications be completed by the end of toe first scheduled' outage of sufficient duration af ter July 5, 1982. The ndxt scheduled outage for Unit 1 is a refueling outage commencing in October,1982. 'We will be unable to complete engineering and procurement
- y by that time.
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Please contact this office at your earliest convenience regarding the acceptability'of this exemption request.
i, Very truly yours, 4
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[.T.Beckham,Jr.
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PLS/mb s
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H. C. Nix, Jr.
J. P. O'Reilly (NRC-Regirn II)
R. F. Rogers, III I
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