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:
Therefore, the PRA safety functions (PSFs) are those functions credited for preventing or mitigating unplanned radiological releases from any source within the plant. Chapter 5 of a SAR following NEI 21-07, Revision 1, should describe the applicant’s approach to designating SSC safety functions and classifications in accordance with the PRA safety functions (PSFs). For SSCs, the applicant should describe the required safety functions (RSFs), the required functional design criteria (RFDC), the PDC, and the classification of SR and NSRST SSCs. These terms are defined in NEI 21-07, Revision 1, Appendix A, “Glossary of Terms.” C.6 Staff Position: NEI 21-07, Revision 1, Section C.5, provides an acceptable method for developing information related to the safety classification of SSCs, including information about RSFs, RFDC, PDC, and SR and NSRST SSCs with the following clarifications and additions: a. NEI 21-07, Revision 1, Chapter 5, provides an acceptable approach for developing proposed PDC, with the following clarifications and additional information. (1) Addition: The requirements in 10 CFR 50.34(a)(3), 52.79, 52.137, and 52.157 to propose PDC includes a requirement, for both LWRs and non-LWRs, to establish the necessary design, DG-1404, Revision 1, Page 23 fabrication, construction, testing, and performance requirements for SSCs important to safety (as described in paragraph C.6.a.(2) of this staff position below). As provided in Appendix A to Part 50, the GDC are intended to provide guidance in establishing the PDC for nuclear power plants such as non-LWRs. Applicants addressing less than the full scope of PDC must request an exemption from the applicable requirements for providing proposed PDCs and provide suitable justification for the exemption. For example, the justification may be that, to address specific elements of PDC scope, the applicant has complied with other regulatory requirements that compel the applicant to provide the relevant information in