Document: NRC Regulatory Guide
Document ID: cde52d5a-adf9-49be-9d1f-59449dfca895
Document Type: regulatory_guide
Title: TRIAL - Acceptability of Probabilistic Risk Assessment Results for Non-Light Water Reactor Risk-Informed Activities
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML2123/ML21235A008.pdf
Revision Date: 2023-05
Chapter: 
Section ID: RG-1.247
CFR Part: 
CFR Title: 

Content:
amentals, safety requirements, safety guides, and other relevant reports reflects an international perspective on what constitutes a high level of safety. To inform its development of this RG, the NRC considered IAEA safety requirements and safety guides pursuant to the Commission’s “International Policy Statement,” published in the Federal Register on July 10, 2014 (Ref. 26), and Management Directive and Handbook 6.6, “Regulatory Guides,” dated May 2, 2016 (Ref. 27). The following IAEA safety standards series documents incorporate similar design and pre-operational testing guidelines and are consistent with the basic safety principles considered in developing this RG: • IAEA Safety Standards Series No. SSG-3, “Development and Application of Level 1 Probabilistic Safety Assessment for Nuclear Power Plants,” issued 2010 (Ref. 28), provides recommendations for meeting the IAEA safety requirements in performing or managing a level 1 probabilistic safety assessment (PSA) project for a nuclear power plant. • IAEA Safety Standards Series No. SSG-4, “Development and Application of Level 2 Probabilistic Safety Assessment for Nuclear Power Plants,” issued 2010 (Ref. 29), provides recommendations for meeting the IAEA safety requirements in performing or managing a level 2 probabilistic safety assessment (PSA) project for a nuclear power plant. Documents Discussed in Staff Regulatory Guidance This RG endorses, with exceptions, the use of one or more codes or standards developed by external organizations, and other third-party guidance documents. These codes, standards and third-party guidance documents may contain references to other codes, standards, or third-party guidance documents (“secondary references”). If a secondary reference has itself been incorporated by reference into NRC regulations as a requirement, then licensees and applicants must comply with that standard as set forth in the regulation. If the secondary reference has been endorsed