Document: NUREG-0800
Document ID: c6dbe9ec-b58d-4a77-85ee-47b58571c3c0
Document Type: srp
Title: Revision 6 - August 2016
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1601/ML16019A200.pdf
Revision Date: 2023-06
Chapter: 7
Section ID: 7
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Content:
instrument setpoints. 10 CFR Part 50, Appendix A, “General Design Criteria for Nuclear Power Plants,” General Design Criterion (GDC) 13, “Instrumentation and Control,” requires, in part, that instrumentation be provided to monitor variables and systems and that controls be provided to maintain these variables and systems within prescribed operating ranges. GDC 20, “Protection System Functions,” requires, in part, that the protection system be designed to initiate automatically the operation of appropriate systems including the reactivity control systems, to assure that specified acceptable fuel design limits are not exceeded as a result of anticipated operational occurrences. 10 CFR 50.36(c)(1)(ii)(A), “Technical Specifications,” requires, in part that, where a limiting safety system setting (LSSS) is specified for a variable on which a safety limit has been placed, the setting be so chosen that automatic protective action will correct the abnormal situation before a safety level is exceeded. LSSSs are settings for automatic protective devices related to variables with significant safety functions. Setpoints found to exceed technical specification limits are considered as malfunctions of an automatic safety system. Such an occurrence could challenge the integrity of the reactor core, reactor coolant pressure boundary, containment, and associated systems. BTP 7-12-3 Revision 6 – August 2016 10 CFR 50.36(c)(3), “Technical Specifications,” states that surveillance requirements are requirements relating to test, calibration, or inspection to assure that the necessary quality of systems and components is maintained, that facility operation will be within safety limits, and that the limiting conditions for operation will be met. 2. Relevant Guidance RG 1.105, “Setpoints for Safety-Related Instrumentation,” provides guidance for ensuring that instrument setpoints are initially - and remain - within the technical specification limits. This RG