Document: NUREG-0800
Document ID: 5691df7d-390d-4ce8-953e-bbdb0a812705
Document Type: srp
Title: REACTOR TRIP SYSTEM
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1515/ML15159B086.pdf
Revision Date: 2023-06
Chapter: 7
Section ID: 7.2
CFR Part: 
CFR Title: 

Content:
ovides additional guidance. 7.2-5 Draft Revision 6 – August 2015 REVIEW PROCEDURES The reviewer will select material from the procedures described below, as may be appropriate for a particular case. Typical reasons for a non-uniform emphasis are the introduction of new design features or the utilization in the design of features previously reviewed and found acceptable. These review procedures are based on the identified SRP acceptance criteria. For deviations from these specific acceptance criteria, the staff should review the applicant’s evaluation of how the proposed alternatives to the SRP criteria provide an acceptable method of complying with the relevant NRC requirements identified in Subsection II. SRP Section 7.1 describes the general procedures to be followed in reviewing any instrumentation and control system. This part of SRP Section 7.2 highlights specific topics that should be emphasized in the RTS review. 1. The review should include an evaluation of the RTS design against the requirements of IEEE Std 603-1991 or IEEE Std 279-1971, depending upon the applicant or licensee’s commitment regarding design criteria. For computer-based RTSs, guidance is provided by RG 1.152. SRP Appendices 7.1-B and 7.1-C discuss the requirements of IEEE Std 279-1971 and IEEE Std 603-1991, respectively, and how the requirements are used in the review of the RTS. SRP Appendix 7.1-D discusses the criteria of IEEE Std 7-4.3.2 and how the criteria are used in the review of the RTS. Although the primary emphasis is on the equipment comprising the RTS, the reviewer must consider the overall protective functions at the system level. The RTS design should be compatible with the accident analysis. It is not sufficient to evaluate the adequacy of the RTS only on the basis that the design meets the specific requirements of IEEE Std 279-1971 or IEEE Std 603-1991. The RTS review should address all topics identified as applicable in SRP Table 7-1. SRP Appendix 7.1-A describes