Document: NUREG-0800
Document ID: 9a64419a-34ff-49d2-87dd-c6f10c12014f
Document Type: srp
Title: or 7.3 of the SAR.
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0525/ML052500501.pdf
Revision Date: 2023-06
Chapter: 7
Section ID: 7.2
CFR Part: 
CFR Title: 

Content:
ic algorithms. These methods are not sufficiently mature at this time to support the definition of processes for evaluating conformance with the acceptance criteria of 10 CFR 50 and ANSI/IEEE Std 279. Application of the Supplemental Guidance to Computer-Based Systems Important to Safety Digital computers may be used in non-safety systems that are important to safety and are provided to comply with: • GDC 13 (Instrumentation & Control) • GDC 19 (Remote Shutdown) • 10 CFR 50 Appendix R, Section III.G.1.b (Remote Cold Shutdown) • 10 CFR 50 Appendix R, Section III.L.1 (Alternate or Dedicated Shutdown) • 10 CFR 50.62 (ATWS) • 10 CFR 50.63 (Station Blackout) Rev. 4 — June 1997 SRP 7.1-9 • 10 CFR 50.47 (Emergency Response) GDC 1 and 10 CFR 50.55a(a)(1) require that these systems be designed to quality standards commensurate with the importance of the safety function to be performed. Items 1, 2, 4, 6, and 8 above should be considered when evaluating such systems with respect to these criteria. Item 3 above should also be considered for systems whose failure under postulated environmental conditions could prevent satisfactory accomplishment of safety functions. Item 5 above should also be considered for reactivity control systems required for remote, alternate, or dedicated shutdown systems required by GDC 19 or 10 CFR 50 Appendix R. Other acceptance criteria which are applicable to I&C systems important to safety are not included when the evaluation of conformance to such criteria is addressed in the review of other SAR sections. For example, GDC 3, "Fire Protection," is not included in Table 7-1 since conformance to the requirements of GDC 3 is addressed in the review of Section 9.5.1 of the SAR. Appendix A to this SRP section provides guidance on the applicability and review methods to be used in evaluating conformance to the acceptance criteria and guidelines for I&C systems important to safety. Appendix B to this SRP section provides guidance to be used