Document: NRC Regulatory Guide
Document ID: 9c99a4b7-8619-41f0-b716-262bfdb03941
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:
tulated accidents (for example, a system that performs both the residual heat removal function and the emergency core cooling function) would need to meet SFR-DC 37. Specific mention of “pressure” testing has been removed yet remains a potential requirement should it be necessary as a APPENDIX B. SODIUM-COOLED FAST REACTOR DESIGN CRITERIA Appendix B to DG-1330, Page B-19 IV. Fluid Systems Criterion SFR-DC Title and Content NRC Rationale for Adaption to GDC component of “…appropriate periodic functional testing...” of cooling systems. A non-leaktight system may be acceptable for some designs provided that (1) the system leakage does not impact safety functions under all conditions, and (2) defense in depth is not impacted by system leakage. “Active” has been deleted in item (2) as appropriate operability and performance system component testing are required, regardless of an active or passive nature. Reference to the operation of applicable portions of the protection system, cooling water system, and power transfers is considered part of the more general “associated systems.” Together with the ultimate heat sink, they are part of the operability testing of the system as a whole. The GDC reference to electric power was removed. Refer to SFR- DC17 concerning those systems that require electric power. 38 Containment heat removal. Same as ARDC A system to remove heat from the reactor containment shall be provided as necessary to maintain the containment pressure and temperature within acceptable limits following postulated accidents. Suitable redundancy in components and features and suitable interconnections, leak detection, isolation, and containment capabilities shall be provided to ensure that the system safety function can be accomplished, assuming a single failure. “…as necessary…” is meant to condition an SFR-DC 38 application to designs requiring heat removal for conventional containments that are found to require heat removal measures.