Document: NUREG-0800
Document ID: 9c6c6c9f-7e30-4d2b-ab07-6d21773f319d
Document Type: srp
Title: INSTRUMENTATION AND CONTROLS - INSPECTIONS, TESTS, ANALYSES,
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0706/ML070660624.pdf
Revision Date: 2023-06
Chapter: 14
Section ID: 14.3.5
CFR Part: 
CFR Title: 

Content:
OL referencing DC) and ITAAC Design Descriptions or ITAAC references to the FSAR (for COL not referencing DC) should describe the top-level I&C design features and performance characteristics that are significant to safety. For safety systems, this should include a description of system purpose, safety functions, equipment quality (e.g., meet the functional requirements of IEEE Std. 603-1991 and the digital system life cycle design process), equipment qualification, automatic decision-making and trip logic functions, manual initiation functions, and design features (e.g., system architecture) provided to achieve high functional reliability. The functions and characteristics of other I&C systems important to safety should also be discussed to the extent that the functions and characteristics are necessary to support remote shutdown, support required operator actions or assessment of plant conditions and safety system performance, maintain safety systems in a state that assures their availability during an accident, minimize or mitigate control system failures that would interfere with or cause unnecessary challenges to safety systems, or provide diverse back-up to protection systems. SRP Section 14.3, Appendix A, Subsection B.1, provides additional guidance on the content of Tier 1 Design Descriptions, ITAAC Design Descriptions, or ITAAC references to the FSAR. 3. ITAAC should identify the significant features of the I&C systems on which the Staff is relying to assure compliance with each NRC requirement identified in SRP Appendix 7.1-A. Tests, analyses, and acceptance criteria associated with each design commitment should, when taken together, be sufficient to provide reasonable assurance that the final as-built I&C system fulfills NRC requirements. SRP Appendix 7.1-C provides an expanded discussion of SRP acceptance criteria for safety system compliance with 10 CFR 50.55a(h). SRP Appendix 7.1-D further discusses SRP acceptance criteria for safety and protection