Document: NUREG-0800
Document ID: a4cb1b75-ec12-4a5f-9042-da6e8c17fe83
Document Type: srp
Title: and 7.7 of the safety analysis report (SAR).
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0525/ML052500502.pdf
Revision Date: 2023-06
Chapter: 7
Section ID: 7.6
CFR Part: 
CFR Title: 

Content:
n under 10 CFR 52, the design should provide for manual, system-level actuation of critical safety functions. BTP HICB-19 provides guidance for the review of defense-in-depth and diversity. • System testing and inoperable surveillance — See Appendix 7.1-B items 10 and 11 or Appendix 7.1-C items 12, 13, and 27. • Use of digital systems — See Appendix 7.0-A. • Setpoint determination — See Draft Reg. Guide DG-1045 (proposed revision 3 to Reg. Guide 1.105, "Instrument Setpoints for Safety Systems"), and BTP HICB-12. In certain instances, it will be the reviewer's judgment that, for a specific case under review, emphasis should be placed on specific aspects of the design, while other aspects of the design need not receive the same emphasis and in-depth review. Typical reasons for such a non-uniform emphasis are the introduction of new Rev. 4 — June 1997 SRP 7.2-5 design features or the utilization in the design of features previously reviewed and found acceptable. However, in all cases, the review must be sufficient to conclude conformance to the acceptance criteria, i.e., the requirements of the NRC's regulations. IV. Evaluation Findings The Staff verifies that sufficient information has been provided and the review supports the following conclusions as stated in the SER: The NRC staff concludes that the design of the reactor trip system (RTS) and the RTS initiation of the essential auxiliary support (EAS) systems are acceptable and meet the relevant requirements of General Design Criteria (GDC) 1, 2, 4, 13, 19-25, and 29, and 10 CFR 50.34(f), 50.55a(a)(1), and 50.55a(h). The Staff conducted a review of these systems for conformance to the guidelines in the regulatory guides and industry codes and standards applicable to these systems. The Staff concluded that the applicant/licensee adequately identified the guidelines applicable to these systems. Based upon the review of the system design for conformance to the guidelines, the Staff finds that there is