Document: NUREG-0800
Document ID: 05908428-2f08-4a4f-8512-996c29c86da8
Document Type: srp
Title: have been revised to address Addendum B of the ASME standard and the revised NEI
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0717/ML071700657.pdf
Revision Date: 2023-06
Chapter: 19
Section ID: 19.1
CFR Part: 
CFR Title: 

Content:
peer review process. 19.1-3 Revision 2 - June 2007 In developing this SRP section, the staff considered the NRC's guidance on the use of PRA in risk-informed regulatory applications, as documented in Regulatory Guide 1.174 and the associated SRP Section 19.2. These documents make it clear that PRA information is one input into making a decision. Specifically, the decision-making process will use the results of the risk analyses in a manner that complements traditional engineering approaches, supports the defense-in-depth philosophy, and preserves safety margins. Thus, risk analysis will inform, but it will not determine regulatory decisions. Applicability This SRP section is applicable to any licensee request submitted for NRC review and approval for which information from a PRA plays an effective role in the decision-making process. It will be used to support application-specific SRP sections that provide guidance for several activities, including the following examples: • applications to support a design certification or combined operating license (SRP Section 19.0) • changes to a plant's licensing basis (SRP Section 19.2) • changes to allowed outage times and surveillance test intervals in plant-specific technical specifications (SRP Section 16.1) • changes in the scope and frequency of tests on pumps and valves in a licensee's inservice test program (SRP Section 3.9.7) • changes in the scope and frequency of inspections in a licensee's inservice inspection program (SRP Section 3.9.8). The above documents address reviewing the application in terms of some or all of the following: • the structures, systems, and components (SSCs); operator actions; and plant operational characteristics affected by the application • the description of the cause-effect relationships between the change and the above SSCs, operator actions, and plant operational characteristics • mapping of the cause-effect relationships onto PRA model elements • identification of the