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:
e as well as active system components are considered. APPENDIX A. ADVANCED REACTOR DESIGN CRITERIA Appendix A to DG-1330, Page A-19 IV. Fluid Systems Criterion ARDC Title and Content NRC Rationale for Adaptions to GDC 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 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. The GDC reference to electric power was removed. Refer to ARDC 17 concerning those systems that require electric power. 44 Structural and equipment cooling. A system to transfer heat from structures, systems, and components important to safety to an ultimate heat sink shall be provided, as necessary, to transfer the combined heat load of these structures, systems, and components under normal operating and accident conditions. Suitable redundancy in components and features and suitable interconnections, leak detection, and isolation capabilities shall be provided to ensure that the system safety function can be accomplished, assuming a single failure. This renamed ARDC accounts for advanced reactor design system differences to include cooling requirements for SSCs, if applicable; this ARDC does not address the residual heat removal system required under ARDC 34, and ECCS system under ARDC 35 The GDC reference to electric power was removed. Refer to ARDC 17 concerning those systems that require electric power. 45 Inspection of structural and equipment cooling systems. The structural and equipment cooling systems shall be designed to permit appropriate periodic inspection of important components, such as heat exchangers and piping, to ensure the integrity and capability of the systems. This renamed ARDC accounts for advanced reactor system