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
CFR Part: 
CFR Title: 

Content:
on 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 various natural phenomena in SRP Sections 14.3.1 and 14.3.2, and regarding piping design in SRP Section 14.3.3. 3. The Instrumentation and Controls Branch (HICB) determines the acceptability of Tier 1 information regarding the I&C aspects of the standard design in SRP Section 14.3.5. II. ACCEPTANCE CRITERIA The acceptance criteria for ITAAC are based on meeting 10 CFR 52.97(b)(1), which sets forth the comprehensive requirements for ITAAC. For design certification reviews, the scope of ITAAC is limited to the scope of the certified design as required by 10 CFR 52.47(b). The reviewer should primarily utilize the SRP sections related to reactor and core cooling systems in its review of Tier 1 to determine the safety significance of SSCs for the design of reactor and core cooling systems. Other sources include applicable rules and regulations, GDCs, RGs, USIs and GSIs, NRC generic correspondence, PRA, insights from the standard design's safety and severe accident analyses, and operating experience. Tier 1 should be reviewed for consistency with the initial test program described in DCD Tier 2 Chapter 14.2. The reviewer should also use the review checklists provided in Appendix D to SRP Section 14.3 as an aid for establishing consistency and comprehensiveness in his review of the systems. If applicable, the reviewer should utilize regulatory guidance from the Commission for selected policy and technical issues related to particular design. Examples of these are contained in SECY-93-087, "Policy, Technical, and Licensing Issues Pertaining to Evolutionary and Advanced Light-Water Reactor Designs." The SRM related to this is dated July 21, 1993. Tier 1 should be reviewed for treatment of design information proportional to the safety significance of the SSC for that system.