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:
l the risk impact of the application and results (note that this is the same as that required in the application-specific RGs). • Identification of the key assumptions and approximations relevant to the results used in the decision-making process. Also, include the peer reviewers’ assessment of those assumptions. These assessments provide information to the NRC staff in their determination of whether the use of these assumptions and approximations is appropriate for the application, or whether sensitivity studies performed to support the decision are appropriate. • A discussion of the resolution of the peer review findings and observations that are applicable to the portions of the PRA required for the application. This decision should take the following forms: – a discussion of how the PRA model has been changed – a justification in the form of a sensitivity study that demonstrates the accident sequences or contributors significant to the application decision were not adversely impacted (remained the same) by the particular issue • If the standards or peer review process documents recognize different capability categories or grades that are related to level of detail, degree of plant specificity, and degree of realism, identify the use of the portions of the PRA that conform to capability categories or grades lower than deemed required for the given application (See Section 1-3 of ASME/ANS RA-Sa-2009). • Identify PRA model upgrades, including the use of NDMs. The results of the peer review of these PRA upgrades, including those for the implementation of NDMs, should be submitted to the staff. If applicable, identification of NDM documentation previously submitted to the NRC consistent with the guidance in NEI 17-07, Revision 2 as well as PWROG-19027-NP, Revision 1, and the regulatory position C.2.2.4 of this RG. DG-1362, Page 52 • If the licensee’s or applicant’s PRA model includes NDMs that have open finding-level F&Os from the technical