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:
tor for Operations to Chairman Jackson, US NRC, “Implementation of Staff Position in SECY-96-128, ‘Policy and Key Technical Issues Pertaining to the Westinghouse AP600 Standard Pressurized Reactor Design’, Related to Post-72 Hour Actions”, June 23, 1997 (ML003708229). Acceptance Criteria Specific acceptance criteria are listed below for each principal area of the staff’s review. Area of Review – Identification of SSCs in the Scope of the RTNSS Program 1. The staff will verify that the applicant has met the following acceptance criterion: The applicant has identified those nonsafety-related SSCs that require regulatory treatment using the five scoping criteria listed above. 2. The staff will verify that the applicant has met the following acceptance criterion for RTNSS “B” SSCs: The applicant has identified the necessary functions performed by installed nonsafety-related SSCs to provide a back-up post 72-hour period passive system support capability and provided reasonable assurance that those SSCs can perform their necessary functions for a period up to seven days following an accident 19.3-7 Draft Rev.0 – June 2013 3. The PRA and Severe Accident staff will verify that the applicant has met the following acceptance criterion: The applicant has determined those nonsafety SSCs, if any, used to prevent the occurrence of initiating events and, based on their importance to risk as determined from the PRA included them in the scope of RTNSS. Area of Review – Functional Design of RTNSS SSCs 1. The staff will verify that the applicant has met the following acceptance criterion: The applicant has established functional requirements related to RTNSS R/A missions for the design of SSCs in the RTNSS program, including support systems. 2. The staff will verify that the applicant has met the following acceptance criterion: The applicant has designed SSCs in the RTNSS program, and their support systems, to satisfy their functional requirements related to the