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:
for staff review that specific fuel, control rod, and core design analyses as described in DCD Tier 2 Chapters 4, 6 and 15. Much of the detailed supporting information in Tier 2 for the nuclear fuel, fuel channel, and control rod Tier 1, if considered for a change by a COL applicant or licensee that references the certified standard design, would require prior NRC approval. Therefore, for the evolutionary designs, the staff concluded that this information should be designated as Tier 2* information. However, the staff allowed some of the Tier 2* designation to expire after first full power operation of the facility, when the detailed design was DRAFT Rev. 0 - April 1996 14.3.4-4 complete and the core performance characteristics were known from the startup and power ascension test programs. The NRC bears the final responsibility for designating which material in Tier 2 is Tier 2*. No ITAAC are required for Tier 1 information in the fuel, control rod, and core design areas because of the requirement for prior NRC approval of any proposed changes to the approved design. Post fuel load testing programs (e.g., startup testing and power ascension testing) verify that the actual core performs in accordance with the analyzed core design. Specific issues that should be examined for treatment in Tier 1 include net positive suction head for key pumps (standard ITAAC entry specified in the applicable systems), and intersystem LOCA (the design pressure of the piping of the systems that interface with the reactor coolant pressure boundary should be specified in the design descriptions or figures of the applicable systems, using code designations and safety classes). III. REVIEW PROCEDURES 1. Follow the general procedures for review of Tier 1 contained in the Review Procedures section of SRP Section 14.3. Ensure that the DCD is consistent with Appendix A to SRP Section 14.3. Review responsibilities may be consistent with those in Appendix B to SRP Section 14.3. 2. Ensure that all