ML20148B348
| ML20148B348 | |
| Person / Time | |
|---|---|
| Issue date: | 10/23/1978 |
| From: | Minogue R NRC OFFICE OF STANDARDS DEVELOPMENT |
| To: | Hart G SENATE |
| Shared Package | |
| ML20148B355 | List: |
| References | |
| FRN-41FR46167, RULE-PRM-50, TASK-EM-526-1, TASK-OS NUDOCS 7810310193 | |
| Download: ML20148B348 (2) | |
Text
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NUCLEAR REGUL ATORY COMMISSION WASHINGTOfi, D. C. 20555 2.
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The Honorable Gary Hart, Chairman Subcomittee on Nuclear Regulation Comittee on Environment and Public Works United-States Senate Washington, D.C. 20510
Dear Mr. Chairman:
Enclosed for your information are copies of a notice of effective rule-making to amend 10 CFR Part 50. The purpose of the amenduents is to clarify the Commission's original intent in regard to General Design Criterion 50, " Containment Design Basis," of Appendix A to Part 50 and to provide a new 5 50.44 to specify standards for combustible gas control systems.
The effective amendments require the applicant or licensee to show that a combustible gas mixture would not form in the containment, or that if such a situation should occur, it would not affect the plant's safety functions.
If neither of these conditions can be shown, inerting of containment will be required by the amendents.
The notice of proposed rulemaking was published in the Federal Register (41 FR 46167) on October 21, 1976, for public comment for a period of 60 ,,
days. The effective rule reflects consideration of public comments, I but retains the or.iginal intent of the proposed rule. ,
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The amendments are being transmitted to the Office of the Federal Register and will be made effective 30 days following publication.
Copies of a public announcement we plan to issue on this matter are also i enclosed.
Sincerely, A ,- ih l Ro e B. Minogue, Director #
Office of Standards Development
Enclosures:
- 1. Notice of effective rulemaking to amend 10 CFR Part 50 l
- 2. Public announcement on the amendment to require inerting i of light water reactor containments l cc: Se tator James A. McClure 7810310 0
s MAILING LIST The Honorable Gary Hart, Chairman Subcommittee on Nuclear. Regulation .
Committee on Environment and Public Works United States Senate '
V'ashington, D. C. 20510 cc- Senator James McClure The Honorable Morris K. Udall, Chairman Subcommittee on Energy and the Environment Committee on Interior and Insular Affairs Unitad States House of Representatives Wash'ngton, D.C. 20515 cc: Representative Robert Bauman The Honoraoie John D. Dirige!1, Chairman Subcommittee on Energy.and Poviar Committee on Interstate and Foreign Commerce United States House of Representatives Washington, D.C. 20515 cc: Representative Clarence J. Brown -
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bec: Central files Y. S. Huang, NRR
" - SD RD, RF W. Butler, NRR EMSB SJ,RD,C G. Lainas, NRR OCT 2 3 1978 L. Gossick, E00 C. Grimes, NRR
- J. Felton, ADil B. Buckley, NRR M. Malsch, ELD E. Pleasant, SECY H. Denton, NRR R. Minogue, SD The lionorable Gary liart, Chair an R. Smith, SD Subcocmittee ou l'uclear Coquiaticn G. Arlotto, SD Ccc.ittee on Environment ard Public l'orks W. Morrison, SD United States Senate J. Norberg, SD Washington, D.C. 20510 11. Fleishman, SD Daar Mr. Chaiman:
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OCA Enclosed for your infomation are copies of a notice of effective rule-taking to ce.ena 10 CFR part 60. The puricose of the crende.cnts is to clarify the Cc: mis ion's original intcnt in rc. gard to Ecneral Design Critorion 50, "Containrent Dasion Casis," of /c?i andix A to Part 50 and to provide a new s 50.44 to spccify standards for coi:iustible gas control systccs.
The effective amendments require the applicant cr licensee to show that a combustible gas mixture vould not fem in the containnent, or that if such a situation ::hould occur, it t:ould not affect the plant's saia'y functions.
If naithcr of tucsa conditions can be shoun, in:rting of containment will be required by tha caenuents.
The notice of proposed rulcaaking was published in the Federal re gister (41 F3 46107) ca 6ctober F.1,197G, for public c=mnt for a .<rica of 60 days. The effective rulo rafic:ts censideration of ra:blic cements, but retains the original intcut of the proposed rule.
The amendracnts are being transaitted to the Offico cf the Fnd'ral P.cgister_
and will be maca effective 33 days follcuing publication.
Copics of a public announcement we plan to issue on this tctter are also enclosed.
Sincerely,
, g g;ned by n. G. Smith 981031o\ W 8 Robcrt 8. flinogue, Director Office of Standards Development Enclosurcs:
- 1. totico of effective rulceaking to amond 10 CFR P2rt 50 Identical letters sent to attached
- 2. Public announccc nt on the Mailing List.
anendment to rceuire inerting 31 526-1 of light watcr reactor containnnts CRESS lO r g (g g cp g .g y Q ,pj_._ _S.0:GES _ __Sf.E.SQ__SDLDD.p.___j..S_D;DI 300680 SD: ENS 5 / f -
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MAILING LIST The Honorable Gary Hart,' Chairman Subcommittee on Nuclear Regulation Committee on Environment and Public Works United States Senate Washington, D.C. 20510 l 1
cc: Senator' James McClure l The Honorable Morris K. Udall, Chairman Subcommittee on Energy and the Environ ent Committee on Interior and Insular Affairs United States House of Representatives Washington, D C. 20515 I
cc: Representative Robert Bauman l l
The Honorable John D. Dingell, Chairman I Subcommittee on Energy and Power l Committee on Interst, ate and Foreign Cermerce '
United States House of Representetives Washington, D.C. 20515
'cc: Representative Clarence J. Brown I
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