Document: NUREG-0800
Document ID: e89cc26c-d19a-42b8-818a-fb598c05ccee
Document Type: srp
Title: PLANT DESIGN FOR PROTECTION AGAINST POSTULATED PIPING FAILURES IN FLUID
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052340548.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.6.1
CFR Part: 
CFR Title: 

Content:
g of the systems identified in the SAR as high or moderate energy systems on appropriate plant arrange- ment 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. Where questions as to break locations arise, the reviewer consults the EMEB for a determination on the proper locations. c. For cases where neither physical separation nor protective enclosures are considered practical by the applicant, the SPLB will review the SAR information to verify the following: (1) The reasons for which the applicant judged both physical separation and system enclosure to be impractical as means of protection are consistent with item B.1.c of BTP SPLB 3-1. (2) Redundant design features or additional protection have been provided in these situations and are such that failure modes and effects analyses for all failure situations show that the performance of safety features will be assured, assum- ing a single active failure in any required system. These analyses are done under the criteria and assumptions of item B.3 of BTP SPLB 3-1. Special measures taken to provide additional/protection are reviewed on an individual case basis, with assistance from the other review branches as needed. 2. SPLB reviews the information presented in the SAR that identifies the principal design features. The reviewer performs his evaluation by comparing the design basis information given in the SAR with that described in item B.2 of BTP SPLB 3-1. By this comparison of indivi- dual design features, the reviewer verifies as follows that the nec- essary measures have been provided by the applicant in his design. a. SPLB, with assistance from ESGB and EMEB, reviews the design features provided for protective structures or compartments,