Document: NUREG-0800
Document ID: d3619a55-efe4-419a-9ccd-6a1d63928d7c
Document Type: srp
Title: REACTOR TRIP SYSTEM
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0705/ML070550083.pdf
Revision Date: 2023-06
Chapter: 7
Section ID: 7.2
CFR Part: 
CFR Title: 

Content:
nsee has also incorporated in the system design the recommendations of task action plan items [identify item number and how implemented] that the staff has reviewed and found acceptable. In the review of the RTS, the staff examined the dependence of the RTS on the availability of essential auxiliary systems. Based on this review and coordination with those having primary review responsibility of auxiliary supporting features and other auxiliary features, the staff concludes that the design of the RTS is compatible with the functional requirements of auxiliary supporting features and auxiliary features. 2. Note: The following finding applies to systems involving computer-based components. Based on the review of software development plans and the review of the computer software development process and design outputs, the staff concludes that the computer systems meet the guidance of Regulatory Guide 1.152. Therefore, the special characteristics of computer systems have been adequately addressed, and the staff finds that the RTS satisfies the requirements of GDC 1 and 21. Based on the review of the applicant/licensee’s diversity and defense-in-depth analysis, the staff concludes that the RTS complies with the criteria for defense against common-cause failure in digital instrumentation and control systems. Therefore, the staff finds that adequate diversity and defense against common-cause failure have been provided to satisfy these requirements of GDC 21 and 22, and Item II.Q of the Staff Requirements Memorandum on SECY-93-087. 7.2-9 Revision 5 - March 2007 3. For DC and COL reviews, the findings will also summarize the staff’s evaluation of requirements and restrictions (e.g., interface requirements and site parameters) and COL action items relevant to this SRP section. 4. Note: The following conclusion is applicable to all applications. The conclusions noted above for the RTS are applicable to all portions of the systems except for the following, for which