Document: NRC Regulatory Guide
Document ID: da269da5-7390-4252-b08f-bdb7aeb8beaf
Document Type: regulatory_guide
Title: Developing Principal Design Criteria for Non-Light Water Reactors + HISTORY - HISTORY 02/2017 – DG-1330 , Proposed Revision 0
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML1630/ML16301A307.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.232
CFR Part: 
CFR Title: 

Content:
s and presentations support the need for a pressure-retaining structure surrounding SFRs. The report, “Experimental Facilities for Sodium Fast Reactor Safety Studies, Task Group on Advanced Reactors Experimental Facilities (TAREF)(Ref. 30), indicates that it is necessary for structures to APPENDIX B. SODIUM-COOLED FAST REACTOR DESIGN CRITERIA Appendix B to DG-1330, Page B-6 II. Multiple Barriers Criterion SFR-DC Title and Content NRC Rationale for Adaption to GDC withstand the thermo-mechanical load caused by sodium fire to avoid fire propagation and dispersion of aerosols. The report, “Safety Design Criteria for GEN IV Sodium-Cooled Fast Reactor Systems,” (Ref. 31) notes that the design basis for containment shall consider pressure increase and thermal loads due to sodium fire. During the presentation, “SFR Technology Overview,” IAEA Education and Training Seminar on Fast Reactor Science and Technology (Ref. 32), the technical expert noted that low design pressure for the containment basis is the heat produced by a potential sodium fire. In the Annals of Nuclear Energy, the article, “NAFCON-SF: A sodium spray fire code for evaluating thermal consequences in SFR containment,” (Ref. 33) notes that Beschreibung der Forschungsanlage zur Untersuchung nuklearer Aerosole (FAUNA) spray fire experiments show peak pressures in containment over 3.5 bars within the first 5 seconds, gradually tapering downwards to less than 3.5 bars at 25 seconds. 17 Electric power systems. Electric power systems shall be provided to permit functioning of structures, systems, and components important to safety. The safety function for the systems shall be to provide sufficient capacity, capability, and reliability to ensure that (1) specified acceptable fuel design limits and design conditions of the primary coolant boundary are not exceeded as a result of anticipated operational occurrences and (2) vital functions that rely on electric power are maintained in the event of