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:
utions for these items are documented clearly in the safety evaluation report (SER). 7. The reviewer of system implementation according to DAC should confirm via a sequence of audits that the ITAAC is appropriately implemented. For implementation of digital computer-based systems following DAC, SRP Appendix 7.0-A describes the review philosophy, Figure 7.0-A-5 of SRP Appendix 7.0-A identifies candidate topics for audit, and SRP Appendix 7.1-D and SRP Branch Technical Position 7-14 provide detailed technical guidance. 8. Identification of “Tier 2*” material. Tier 2 information for a COL referencing a DC or FSAR information for a plant not referencing a DC may be changed in accordance with a “50.59-like” process. The Staff may designate selected information in Tier 2 or the FSAR that, if considered for a change, requires NRC approval prior to implementation. This information is known as “Tier 2*.” The reviewer should assure that Tier 2* material is identified and that appropriate expiration dates are set. These items should typically be restricted to rapidly changing technology where it is inappropriate to “lock in” a design process for the lifetime of the DC but would also be inappropriate to allow COL applicants or licensees to make unreviewed changes. The items included in Tier 2* should generally be the supporting material for the DAC. 9. Coordinate with the organization responsible for review of reactor systems to confirm that protective, control, display, and interlock functions are consistent with the accident analysis, the operating requirements of the I&C systems, and the requirements of 10 CFR 50, Appendix A, General Design Criteria (GDC) 10, 15, 28, 33, 34, and 35. I&C system ITAAC confirm that the accepted functions are implemented in the as-built design. 10. Coordinate with the organization responsible for the review of plant systems which evaluates the ITAAC for the auxiliary supporting features and other auxiliary features to demonstrate