Document: NUREG-0800
Document ID: 6813459c-4e76-4630-8395-e948ff46c2b3
Document Type: srp
Title: and 7.5 of the SAR.  The review of this requirement should be coordinated
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1515/ML15159A207.pdf
Revision Date: 2023-06
Chapter: 7
Section ID: 7.4
CFR Part: 
CFR Title: 

Content:
plicability - I&C protection and control systems. Review Methods – The evaluation of I&C system contributions to the design margin for reactor core and coolant systems should be a part of the review of the adequacy of I&C protective and control functions. This review is coordinated with the organization responsible for the review of reactor systems. The I&C systems may contribute to the reactor design margin in many ways, for example, by providing better than the minimum required performance, as conservatism in setpoint calculations, or by system features that make the protection or control systems more fault tolerant. Margin may also be credited in many places and there will naturally be tradeoffs between margin in the reactor design, margin in performance analysis assumptions and methods, and margin in the I&C design. The reactor systems and I&C reviewers should work together to understand the margins provided in the applicant’s design and to confirm that there is reasonable assurance that adequate margin is provided. (e) GDC 13, “Instrumentation and Control” “Instrumentation shall be provided to monitor variables and systems over their anticipated ranges for normal operation, for anticipated operational occurrences, and for accident conditions as appropriate to ensure adequate safety, including those variables and systems that can affect the fission process, the integrity of the reactor core, the reactor coolant pressure boundary, and the containment and its associated systems. Appropriate controls shall be provided to maintain these variables and systems within prescribed operating ranges.” Applicability - All I&C systems including supporting data communication systems. Appendix 7.1-A-15 Draft Revision 6 – August 2015 Review Methods - Review of compliance with GDC 13 should include consideration of the following topics. • Instrumentation to monitor plant variables and systems - See SRP Sections 7.5 and 7.7. • Instrumentation to monitor the