ML20244E430

Comments on 861002 Proposed Rev to SRP Section 3.6.2, Determination of Rupture Locations & Dynamic Effects Associated W/Postulated Rupture of Piping. Concurs W/Rev, Subj to Retention of Listed Existing SRP Requirements

ML20244E430
Person / Time
Issue date:	11/12/1986
From:	Ward D Advisory Committee on Reactor Safeguards
To:	Stello V NRC OFFICE OF THE EXECUTIVE DIRECTOR FOR OPERATIONS (EDO)
Shared Package
ML20149C371	List: ML20244E430 ML20244E503 ML20244E522 ML20244E625 ML20245A304 ML20245A307 ML20245A311 ML20246E282 ML20246E328 NUREG-1024, Forwards Update of 861121 CRGR Package Re Proposed Generic Ltr on short-term Tech Spec Improvements.Comments from AEOD, IE & Ofc of General Counsel Incorporated in Update or Resolved.Res Concurred W/O Specific Comment NUREG-1201, Forwards Proposed Commission Policy Statement on Integrated Scheduling of Plant Mods,Proposed Commission Paper & Supporting Info,For CRGR Consideration
References
NUDOCS 8611190078
Download: ML20244E430 (1)

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NUCLEAR REGULATORY COMMISSION

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{.*, ADVISORY COMMITTEE ON REACTOR SAFEGUARDS vvAsHiNoton, p. c. 20ssa

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November 12, 1986 i

Mr. Victor Stello, Jr.

Executive Director for Operations U.S. Nuclear Regulatory Comission  ;

Washington, D.C. 20555

SUBJECT:

ACRS COMMENTS ON PROPOSED REVISED STANDARD REVIEW PLAN SECTION' 3.6.2, " DETERMINATION OF RUPTURE LOCATIONS AND DYNAMIC EFFECTS ASSOCIATED WITH THE POSTULATED RUPTURE OF PIPING" DATED' OCTOBER 2, 1986 The combined ACRS Subcommittees on Metal Components and on Structural Engi-neering met on May 23 and 24,1985 to discuss the NRC proposed revisions to Standard Review Plan (SRP) Section 3.6.2, " Determination of Rupture Locations and Dynamic Effects Associated with the Postulated Rupture of Piping." In addition, this matter has been discussed during review of specific licensing

(' applications where exceptions to the present rule on arbitrary intermediate pipe break locations were approved. During its 319th meeting, November 6-8, 1986, the ACRS discussed the revised SRP requirements and their application.

As a result of these discussions, we concur with the proposed revision to SRP Section 3.6.2 as it relates to modifying pipe break sizes and locations involving a need for pipe restraints and jet shields. However, we believe .

that the existing SRP requirements for postulating break sizes and locations should be retained where they relate to establishing compartment primary and pressure buil dup, particularly outside the subcompartment ,

containment.

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Sincerely,

. Q.4 l 4

David A. Ward Chairman

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