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:
rting data communication systems. Review Methods - Review of compliance with GDC 23 is accomplished as part of the review of system integrity requirements discussed in IEEE Std. 279-1971 and IEEE Std. 603-1991. SRP Appendix 7.1-B and SRP Appendix 7.1-C discuss methods for review of these characteristics. SRP Appendix 7.1-B Subsection 4.5 and SRP Appendix 7.1-C Subsection 5.5 provide review guidance that encompasses the review with respect to compliance with GDC 23. The evaluation of conformance with this requirement should be addressed in the review of Sections 7.2 and 7.3 of the SAR. (m) GDC 24, “Separation of Protection and Control Systems” “The protection system shall be separated from control systems to the extent that failure of any single control system component, or channel, or failure or removal from service of any single protection system component or channel which is common to the control and protection systems leaves intact a system satisfying all reliability, redundancy, and independence requirements of the protection system. Interconnection of the protection and control systems shall be limited so as to assure that safety is not significantly impaired.” Appendix 7.1-A-20 Revision 5 - March 2007 Applicability - All I&C systems. Review Methods - Review of compliance with GDC 24 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 Single-failure criterion Subsection 4.2 Subsection 5.1 Physical, electrical, and communications independence Subsection 4.6 Subsections 5.6 Control protection interaction Subsection 4.7 Subsections 6.6 and 6.3 Auxiliary features Subsection 4.5 Subsection 5.12 Power sources Subsection 4.5 Subsection 8 Separation of protection and control systems