Document: NUREG-0800
Document ID: 04f679de-7014-4125-ac02-607474f53d5a
Document Type: srp
Title: System integrity
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1601/ML16019A088.pdf
Revision Date: 2023-06
Chapter: 7
Section ID: 7.1
CFR Part: 
CFR Title: 

Content:
Subsection 4.5 Subsection 5.5 Setpoints Subsections 3 and 4.15 Subsection 6.8 The evaluation of conformance to this requirement should be addressed in the review of Sections 7.2 and 7.3 of the SAR. (j) GDC 21, “Protection System Reliability and Testability” “The protection system shall be designed for high functional reliability and in- service testability commensurate with the safety functions to be performed. Redundancy and independence designed into the protection system shall be Appendix 7.1-A-19 Revision 6 – August 2016 sufficient to ensure that: (1) no single failure results in loss of the protection function, and (2) removal from service of any component or channel does not result in loss of the required minimum redundancy unless the acceptable reliability of operation of the protection system can be otherwise demonstrated. The protection system shall be designed to permit periodic testing of its functioning when the reactor is in operation, including a capability to test channels independently to determine failures and losses of redundancy that may have occurred.” Applicability - The protection systems, RTS, ESFAS, and supporting data communications systems. Review Methods – The review of compliance with GDC 21 should address the characteristics listed in the table below. These characteristics are described in IEEE Std 279-1971 and IEEE Std 603-1991, and methods for reviewing them are discussed in SRP Appendix 7.1-B and SRP Appendix 7.1-C (see table below for section). Characteristic Review Guidance SRP Appendix 7.1-B SRP Appendix 7.1-C Design basis requirements Section 3 Section 4 Single-failure criterion Subsection 4.2 Subsection 5.1 Completion of protective action Subsection 4.16 Subsections 5.2 and 7.3 Quality Subsection 4.3 Subsection 5.3 System integrity Subsection 4.5 Subsection 5.5 Physical, electrical, and communications independence Subsections 4.6 and 4.7 Subsections 5.6 and 6.3 Capability for test and calibration Subsections 4.9 and