Document: NUREG-0800
Document ID: ecf7a8d4-0097-4a93-8609-630545f03f70
Document Type: srp
Title: REGULATORY TREATMENT OF NONSAFETY SYSTEMS FOR PASSIVE
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1308/ML13081A756.pdf
Revision Date: 2023-06
Chapter: 19
Section ID: 19.3
CFR Part: 
CFR Title: 

Content:
. 5. The staff will verify that the applicant has met the following acceptance criterion: RTNSS “B” SSCs and supporting equipment will be protected from floods and meet the criteria in SRP 2.4 and SRP 3.4.1. Area of Review – Regulatory Treatment of SSCs in the RTNSS Program The staff will verify that the applicant has met the following acceptance criteria: 1. The applicant has established the reliability and availability mission of each RTNSS SSC using the applicable probabilistic, deterministic, and other methods used to identify and quantify risk, including information obtained from sources such as the PRA, severe accident evaluations, industry operating experience, and expert panels. 2. The applicant has established treatment requirements for each SSC commensurate with its reliability and availability missions through operational programs such as pre-service and in-service testing and surveillance, the maintenance program established through 10 CFR 50.65, “Requirements for Monitoring the Effectiveness of maintenance at Nuclear Power Plants,” quality assurance activities for the nonsafety-related SSCs in accordance with Part V of SRP Section 17.5 and ACs, including LCOs and surveillance requirements, in the form of either TSs or administrative controls. 3. Controls for RTNSS “B” SSCs will be provided in the ACM. 19.3-9 Draft Rev.0 – June 2013 III. REVIEW PROCEDURES The general procedures for the review of RTNSS SSCs for all passive light water reactors are given in the following paragraphs. In applying these procedures to the review of RTNSS SSCs in the designs of small modular integral pressurized water reactors (iPWR) that rely on passive safety systems, the staff uses a graded approach described in NUREG-0800, Introduction – Part 2, “Standard Review Plan for the Review of Safety Analysis Reports for Nuclear Power Plants: Integral Pressurized Water Reactor Edition,” Revision 0 (Draft for Comment), January 2013.” Some examples of this