Document: NUREG-0800
Document ID: b6b57a00-5b85-4f0c-965c-ca89ef4265e7
Document Type: srp
Title: DETERMINATION OF RUPTURE LOCATIONS AND DYNAMIC EFFECTS
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1608/ML16088A041.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.6.2
CFR Part: 
CFR Title: 

Content:
Locations in Fluid System Piping Inside and Outside Containment,” BTP 3-4. 9. U.S. Nuclear Regulatory Commission, “Asymmetric Blowdown Loads on PWR Primary Systems,” (resolution of Generic Task Action Plan A-2), NUREG-0609. 10. U.S. Nuclear Regulatory Commission, “Monitoring the Effectiveness of Maintenance at Nuclear Power Plants,” Regulatory Guide 1.160, ADAMS Accession No. ML13210A432 11. Wallis, G., “The ANSI/ANS Standard 58.2-1988: Two Phase Jet Model,” September 15, 2004, ADAMS Accession No. ML050830344. PAPERWORK REDUCTION ACT STATEMENT The information collections contained in the Standard Review Plan are covered by the requirements of 10 CFR Part 50 and 10 CFR Part 52, and were approved by the Office of Management and Budget, approval number 3150-0011 and 3150-0151. PUBLIC PROTECTION NOTIFICATION The NRC may not conduct or sponsor, and a person is not required to respond to, a request for information or an information collection requirement unless the requesting document displays a currently valid OMB control number. 3.6.2-15 Revision 3 – December 2016 APPENDIX A POTENTIAL NONCONSERVATISM OF ANSI/ANS 58.2 STANDARD’S JET MODELING The objectives of this appendix are to describe potential nonconservatisms in American National Standard Institute (ANSI)/American Nuclear Society (ANS) 58.2 Standard’s jet modeling (Ref. 1). It also describes how the staff performs its review of this issue for new reactor design certification applications. As stated in Section III.6 of Standard Review Plan (SRP) 3.6.2, the staff is reviewing this issue on a case by case basis. Discussion of Issues Prior to 2008, the nuclear industry commonly used the ANSI/ANS Standard 58.2-1988 for estimating jet plume geometries and impingement loads based on the fluid conditions internal and external to the piping. However, following interactions with the Advisory Committee on Reactor Safeguards (ACRS) on the jet models described in ANSI/ANS 58.2 by ACRS the staff determined