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:
ated into SFR 26 APPENDIX B. SODIUM-COOLED FAST REACTOR DESIGN CRITERIA Appendix B to DG-1330, Page B-13 III. Reactivity Control Criterion SFR-DC Title and Content NRC Rationale for Adaption to GDC 28 Reactivity limits. The reactivity control systems shall be designed with appropriate limits on the potential amount and rate of reactivity increase to ensure that the effects of postulated reactivity accidents can neither (1) result in damage to the primary coolant boundary greater than limited local yielding nor (2) sufficiently disturb the core, its support structures or other reactor vessel internals to impair significantly the capability to cool the core. “Reactor coolant pressure boundary” has been relabeled as “primary coolant boundary” to conform to standard terms used in the LMR industry. The use of the term “primary” indicates that the SFR-DC are applicable to the primary cooling system, not the intermediate cooling system. The list of “postulated reactivity accidents” has been deleted. 29 Protection against anticipated operational occurrences. Same as GDC IV. Fluid Systems Criterion SFR-DC Title and Content NRC Rationale for Adaption to GDC 30 Quality of primary coolant boundary. Components that are part of the primary coolant boundary shall be designed, fabricated, erected, and tested to the highest quality standards practical. Means shall be provided for detecting and, to the extent practical, identifying the location of the source of primary coolant leakage. “Reactor coolant pressure boundary” has been relabeled as “primary coolant boundary” to conform to standard terms used in the LMR industry. The use of the term “primary” indicates that the SFR-DC are applicable only to the primary cooling system, not the intermediate cooling system. The cover gas boundary is included as part of the reactor primary coolant boundary per NUREG-1368 (page 3-38). 31 Fracture prevention of primary coolant boundary. The primary coolant boundary