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:
diagrams should be reviewed to assure that they accurately depict the functional arrangement and requirements of the systems. The reviewer should use the requirements listed in SRP Appendix 7.1-A and the 10 CFR 50.55a(h) requirements found in SRP Appendices 7.1-C and the guidance found in SRP Appendix 7.1-D as an aid in establishing consistent and comprehensive treatment of issues. In general, each design commitment made to fulfill the technical requirements of 10 CFR Part 50 identified in SRP Appendix 7.1-A should be included or provide justification with the technical basis for omission. It is permissible to develop general bases (e.g., selection criteria) that provide the basis for multiple omissions. Note that it is not necessary that the ITAAC explicitly verify each regulatory requirement. In some cases, commitments to design features may address one or more regulatory requirements, and consequently the ITAAC verifies the associated requirement by verifying proper implementation of the design feature. For example, a DC application may commit to a specific protection system architecture and demonstrate that the architectural arrangement of functional blocks, channels, and divisions is sufficient to assure compliance with the single failure criterion. Thus, ITAAC that confirm that the functional arrangement of the as-built protection system is as described in the design description provides reasonable assurance that system meets the single-failure criterion. The reviewer should be certain to understand these relationships, but it is not necessary that the ITAAC or referenced Design Descriptions explicitly describe them. 3. Assure that the I&C systems are clearly described in Design Descriptions and ITAAC design commitments. For safety systems, this should include a description of system purpose, safety functions, equipment quality, equipment qualification, automatic decision-making and trip logic functions, manual initiation functions, and design features (e.g.,