Document: NUREG-0800
Document ID: f03d2c71-27a1-41fd-9362-1e62c6142e13
Document Type: srp
Title: Containment Systems and Severe Accidents (Tier 1)
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070653.pdf
Revision Date: 2023-06
Chapter: 14
Section ID: 14.3.11
CFR Part: 
CFR Title: 

Content:
SCSB Appendix A Information on Evolutionary Design Certification Reviews ALL Appendix B Review Branch Responsibilities for the Evolutionary Designs ALL DRAFT Rev. 0 - April 1996 14.3-2 Appendix C Detailed Review Guidance ALL Appendix D Standard ITAAC Entries ALL Secondary - Probabilistic Safety Assessment (SPSB) and Safeguards (PSGB) The primary and secondary review responsibilities for the Advanced Boiling-Water Reactor (ABWR) and System 80+ designs are identified in Appendix B to this SRP for additional guidance. I. AREAS OF REVIEW Each branch reviews the ITAAC and the supporting information in Section 14.3 of the Tier 2 portion of the Design Control Document (DCD) submitted by the applicant. It is necessary to develop the Tier 1 design descriptions before the ITAAC can be prepared for NRC staff review. An explanation of the terminology used in this SRP and how the Tier 1 information, which includes design descriptions and ITAAC, was developed for certification of the evolutionary designs is provided in Appendix A to this SRP. The overall review approach consists of ensuring that the top-level design information in the DCD Tier 2 is appropriately included in Tier 1. The type of information and the level of detail in Tier 1 is based on a graded approach that is commensurate with the safety significance of the SSCs for the design. The top-level information selected should contain the principal performance characteristics and safety functions of the SSCs. This information must be appropriately verified by ITAAC. Also, design-specific and unique features of the facility should be carefully considered for inclusion in Tier 1. Applicants may submit Tier 1 design descriptions that are based on the structures and systems of their design rather than on the review branch-oriented format of the DCD Tier 2 and the SRP, thereby creating overlapping NRC review responsibilities. Also, some branches have review responsibilities for many systems. For example, consistent treatment