Document: NUREG-0800
Document ID: 0e5dd9d7-fef0-46ca-ba6d-f3d06f5c7801
Document Type: srp
Title: REACTOR SYSTEMS (Tier 1)
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070662.pdf
Revision Date: 2023-06
Chapter: 14
Section ID: 14.3.4
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CFR Title: 

Content:
1 REVIEW RESPONSIBILITIES Primary - Reactor Systems Branch (SRXB) Secondary - Containment Systems and Severe Accident Branch (SCSB), Probabilistic Safety Assessment Branch (SPSB) I. AREAS OF REVIEW SRXB reviews Tier 1 portion of the Design Control Document (DCD) submitted by the applicant. SRXB has primary review responsibility for the reactor systems, fuel control rods, loose parts monitoring system, and core cooling systems in Tier 1. Review responsibilities may be consistent with those contained in Appendix B to SRP Section 14.3. SRXB has secondary review responsibilities for those systems that could affect the operation of the reactor and core cooling systems. In addition, SRXB has responsibility for the review of selected definitions, interface requirements of the standard design with the site, and site parameters for the design, that pertain to reactor systems issues. Review Interfaces The SCSB is responsible for providing inputs to SRXB regarding the design features and functions of SSCs that should be addressed in Tier 1 information based on severe accident analyses. The SPSB is responsible for providing inputs to SRXB regarding the risk significant design features and functions of SSCs that should be addressed in Tier 1 information based on probabilistic risk assessment (PRA) and shutdown safety evaluations. DRAFT Rev. 0 - April 1996 14.3.4-2 SRP Section 14.3 provides general guidance on review interfaces. SRXB performs related reviews and coordination activities, as requested by other branches, for issues in Tier 1 related to reactor systems. In addition, SRXB will coordinate other branches' evaluations that interface with the overall review of the systems as follows: 1. The Electrical Engineering Branch (EELB) determines the acceptability of Tier 1 information regarding electrical SSCs in SRP Section 14.3.6. 2. The Civil Engineering and Geosciences Branch (ECGB) determines the acceptability of Tier 1 information regarding the ability of SSCs to withstand