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:
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. The LOCA reference has been removed to provide for any postulated accident that might affect the containment structure. Containment structure safety system redundancy is addressed in the second paragraph. 39 Inspection of containment heat removal system. Same as ARDC Examples were deleted to make the SFR-DC technology neutral. APPENDIX B. SODIUM-COOLED FAST REACTOR DESIGN CRITERIA Appendix B to DG-1330, Page B-20 IV. Fluid Systems Criterion SFR-DC Title and Content NRC Rationale for Adaption to GDC The containment heat removal system shall be designed to permit appropriate periodic inspection of important components to ensure the integrity and capability of the system. 40 Testing of containment heat removal system. Same as ARDC The containment heat removal system shall be designed to permit appropriate periodic functional testing to ensure (1) the structural and leaktight integrity of its components, (2) the operability and performance of the system components, and (3) the operability of the system as a whole, and under conditions as close to the design as practical, the performance of the full operational sequence that brings the system into operation, including the operation of associated systems. Specific mention of “pressure” testing has been removed yet remains a potential requirement should it be necessary as a component of “…appropriate periodic functional testing...” of containment heat removal. 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. Reference to the operation of applicable portions of the protection system, structural and equipment cooling water systems, and power transfers is