Document: NRC Regulatory Guide
Document ID: acab976c-e936-49be-8c59-865767973599
Document Type: regulatory_guide
Title: Guidance for a Technology-Inclusive Content of Application Methodology to Inform the Licensing Basis and Content of Applications for Licenses, Certifications, and Approvals for Non-Light-Water Reactors (Rev. 1)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML2319/ML23194A194.pdf
Revision Date: 2023-09
Chapter: 
Section ID: RG-1.253
CFR Part: 
CFR Title: 

Content:
NRC staff will review such an approach on a case-by-case basis. B.2 General B.2.1 As discussed in Section B of Appendix A to DANU-ISG-2022-01, “Review of Risk-Informed, Technology-Inclusive Advanced Reactor Applications-Roadmap” (Ref. B-7), prospective CP applicants may find it beneficial to engage in pre-application activities with the NRC staff regarding approaches to demonstrating the acceptability of a PRA that supports implementation of the LMP methodology before the CP application is submitted. B.2.2 Consistent with NEI 21-07, Revision 1, Section 2.1.1, the CP applicant should clearly document in the preliminary safety analysis report (PSAR) the key assumptions1 made in developing the PRA, including those that are relevant to the probability and consequence models, and the selection of elements for models to incorporate. B.2.3 The CP applicant should consider the near-term and long-term uses of the PRA as the PRA is developed to help ensure that it will be acceptable to support these uses. In addition to supporting implementation of the LMP methodology, results of the PRA may be used to demonstrate how certain 1 NUREG-2122 “Glossary of Risk-Related Terms in Support of Risk-Informed Decisionmaking” (Rev. B-8) describes the key assumption as “An assumption is considered to be key to a risk-informed decision when it could affect the PRA results that are being used in a decision and, consequently, may influence the decision being made.” DG-1404, Revision 1, App. B, Page 3 regulations and Commission policies have been met and to support voluntary risk-informed applications, as discussed below. Demonstrating that Certain Regulations Are Met Currently, no regulation requires the development of a PRA to support a CP application under 10 CFR Part 50.2 However, the CP applicant may use the PRA to demonstrate, in part, that the following regulations in 10 CFR Part 50 have been met: 1. 10 CFR 50.34(a)(1)(ii), which states, “It is expected that reactors will