Document: NRC Regulatory Guide
Document ID: 22ccfd5e-c5d8-4615-a02c-32369aa9f533
Document Type: regulatory_guide
Title: Acceptability of Probabilistic Risk Assessment Results for Risk-Informed Activities (Rev. 3)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML1930/ML19308B636.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.200
CFR Part: 
CFR Title: 

Content:
regulations in this part provide for the licensing of production and utilization facilities pursuant to the Atomic Energy Act of 1954, as amended and Title II of the Energy Reorganization Act of 1974, 10 CFR 50.71, “Maintenance of records, making of reports,”: o 10 CFR 50.71(h)(1), requires that each holder of a COL under subpart C of 10 CFR Part 52 shall develop a Level 1 and a Level 2 PRA and that the PRA must cover those initiating events and modes for which NRC-endorsed consensus standards on PRA exist one year prior to the scheduled date for initial loading of fuel. o 10 CFR 50.71(h)(2), requires that each holder of a COL shall maintain and upgrade the PRA required by 10 CFR 50.71(h)(1) and the upgraded PRA must cover initiating events and modes of operation contained in NRC-endorsed consensus standards on PRA in effect one year prior to each required upgrade. The PRA must be upgraded every four years until the permanent cessation of operations under 10 CFR 52.110(a). o 10 CFR 50.71(h)(3), requires that each holder of a COL shall, no later than the date on which the licensee submits an application for a renewed license, upgrade the PRA required by 10 CFR 50.71(h)(1) to cover all modes and all initiating events. • 10 CFR Part 52, “Licenses, Certifications, and Approvals for Nuclear Power Plants.” The regulations in this part govern the issuance of early site permits, standard DCs, COLs, standard design approvals, and manufacturing licenses for nuclear power facilities pursuant to the Atomic Energy Act of 1954, as amended and Title II of the Energy Reorganization Act of 1974. o 10 CFR 52.47(a)(27) requires that an application under 10 CFR Part 52 contain a final safety analysis report that provides a description of the design-specific PRA and its results. o 10 CFR 52.79(a)(46) requires that an application under 10 CFR Part 52 contain a final safety analysis report that provides a description of the plant-specific PRA and its results. Related Guidance