Document: NUREG-0800
Document ID: cf61f16a-4e82-42da-8333-e100f557fd60
Document Type: srp
Title: PLANT DESIGN FOR PROTECTION AGAINST POSTULATED PIPING FAILURES IN
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0705/ML070550032.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.6.1
CFR Part: 
CFR Title: 

Content:
vidual system temperatures and pressures to ensure that they have been correctly identified. The reviewer evaluates for adequacy the system descriptions of the high and moderate energy piping runs and by reviewing the appropriate system arrangement and piping drawings, examines the plant arrangement measures that were taken to ensure protection from the effects of postulated pipe breaks of high energy systems and non-seismic moderate energy systems, or of leakage cracks for seismically-designed 3.6.1-7 Revision 3 - March 2007 moderate energy systems. The reviewer will determine from the SAR that the following configurations, either by itself or in combination, have been used by the applicant to achieve this protection: A. High and moderate energy fluid systems are separated from essential systems and components, as described in Appendix B to BTP 3-3. The reviewer inspects plant arrangement drawings and other information to verify conformance to Appendix B to BTP 3-3. B. High and moderate energy fluid systems, or portions thereof, are enclosed within structures or compartments designed to protect nearby essential systems or components, or the essential systems and components are enclosed in protective structures. The reviewer traces the routing of the systems identified in the SAR as high or moderate energy systems on appropriate plant arrangement drawings, locates the postulated break locations specified in the applicant's analyses, and determines all locations where the effects from the breaks or leaks interface with safety-related equipment. The reviewer then determines that at these locations enclosures have been provided that protect the safety-related equipment. Any questions related to the location of the break are conveyed to the organization responsible for the review of SRP Section 3.6.2 for a determination of the proper locations. C. For cases where neither physical separation nor protective enclosures are considered practical by the applicant, the