ML20244E430
| 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:
|
| References | |
| NUDOCS 8611190078 | |
| Download: ML20244E430 (1) | |
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E RLOSOGE Z.
s A Rfe UNITED STATES NUCLEAR REGULATORY COMMISSION
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ADVISORY COMMITTEE ON REACTOR SAFEGUARDS
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vvAsHiNoton, p. c. 20ssa November 12, 1986 i
Mr. Victor Stello, Jr.
Executive Director for Operations U.S. Nuclear Regulatory Comission Washington, D.C.
20555
Dear Mr. Stello:
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
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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 and subcompartment pressure buil dup, particularly outside the primary containment.
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Sincerely, Q.4 l
4 David A. Ward Chairman
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