Document: NUREG-0800
Document ID: 949ca18d-b0e4-4b54-9ca9-fdb657988111
Document Type: srp
Title: Revision 5 - March 2007
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0706/ML070660170.pdf
Revision Date: 2023-06
Chapter: 7
Section ID: 7
CFR Part: 
CFR Title: 

Content:
on 5 - March 2007 greater than limited local yielding nor (2) sufficiently disturb the core, its support structures or other reactor pressure vessel internals to impair significantly the capability to cool the core....” Applicability - I&C interlock and control systems. Review Methods - GDC 28 imposes functional requirements on I&C interlock and control systems to the extent they are provided to limit reactivity increases to prevent or limit the effect of reactivity accidents. Relevant I&C systems might include, for example, rod blocks or rod worth minimization systems. The review should confirm that the I&C systems provide the functions, performance, and reliability necessary to limit reactivity increases as credited for compliance with GDC 28. This review is coordinated with the organization responsible for the review of reactor systems. (p) GDC 29, “Protection Against Anticipated Operational Occurrences” “The protection and reactivity control systems shall be designed to assure an extremely high probability of accomplishing their safety functions in the event of anticipated operational occurrences.” Applicability - The protection systems, reactivity control functions of control systems, and supporting data communication systems. Review Methods - Evaluation with respect to the requirements of GDC 29 is based on conformance of the protection system and reactivity control systems to the applicable GDC discussed above. Probabilistic reliability assessments may be performed by the NRC staff to provide a basis for development of deterministic criteria for specific systems. The review of these systems will address conformance to the deterministic criteria so established. Conformance of the reactivity control systems to GDC 29 is addressed in the review of Section 7.2 of the SAR. (q) GDC 33, “Reactor Coolant Makeup” “A system to supply reactor coolant makeup for protection against small breaks in the reactor coolant pressure boundary shall be