Document: NUREG-0800
Document ID: 39eaebb5-884c-4731-895a-8df4686b7293
Document Type: srp
Title: REGULATORY TREATMENT OF NONSAFETY SYSTEMS FOR PASSIVE
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1403/ML14035A149.pdf
Revision Date: 2023-06
Chapter: 19
Section ID: 19.3
CFR Part: 
CFR Title: 

Content:
nt of Nonsafety Systems (RTNSS) in Passive Plant Designs,” dated May 22, 1995, and associated SRM, June 28, 1995 (ADAMS Accession No. ML003708005). 5. SECY-96-128, “Policy and Key Technical Issues Pertaining to the Westinghouse AP600 Standardized Passive Reactor Design,” June 12, 1996, and associated SRM, January 15, 1997 (ADAMS Accession No. ML003708224). 6. Memorandum from L. Joseph Callan, U.S. NRC Executive Director for Operations to Chairman Jackson, U.S. 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 (ADAMS Accession No. 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 7 days following an accident. 3. The staff responsible for the review of the applicant’s PRA 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, has included them in the scope of RTNSS. 19.3-7 Revision 0 – June 2014 Area of Review – Functional Design of RTNSS