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:
rate energy system will be reviewed by EMEB on the basis of BTP EMEB 3-1. The review by SPLB will be based upon the information pro- vided by applicants in the SAR concerning the effects of postulated failures on essential equipment and the ability of the plant to be safely shut down, as described in item B.3 of BTP SPLB 3-1. The reviewer verifies that the applicant's evaluation has properly considered the following points, and in certain cases, as necessary, performs an independent evaluation especially with regard to single failure analyses. a. SPLB reviews the applicant's plant arrangements and design features using layout drawings to assure that all potentially. affected essential systems and components have been considered with respect to the effects of an assumed pipe break. b. SPLB reviews the effects of postulated piping failures as determined from the information given in the SAR. The reviewer will confirm the results of the applicant's evaluations by per- forming a comparative, but abbreviated as appropriate, failure modes and effects analysis that includes the considerations given in item B.3.d of BTP SPLB 3-1 for the following effects: (1) The availability of offsite power. (2) The effects of a single active component failure in systems necessary to mitigate consequences of the postulated piping break. (3) Permissible exclusions to (2) above based upon the provision given in item B.3.b(3) of BTP SPLB 3-1 for certain dual purpose moderate energy systems. 3.6.1-5 Rev. 2 - October 1990 (4) The considerations involved in to the selection of available systems to mitigate the consequences of the piping failure. c. The reviewer will verify from a review of arrangement drawings that control room habitability or access to necessary surrounding areas is not jeopardized as a consequence of the postulated piping failure. d. SPLB evaluates the applicant's analysis of the postulated failure of non-seismic Category I piping systems by performing a failure modes and