Document: NUREG-0800
Document ID: c90016c6-e03f-4224-8ff3-87a6f7d3ca42
Document Type: srp
Title: Appendix 7-A
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0525/ML052500547.pdf
Revision Date: 2023-06
Chapter: 7
Section ID: 7
CFR Part: 
CFR Title: 

Content:
, fabricated, erected, and tested to quality standards commensurate with the importance of the safety functions to be performed. Where generally recognized codes and standards are used, they should be identified and evaluated to determine their applicability, adequacy, and sufficiency, and should be supplemented or modified as necessary to ensure a quality product consistent with the required safety function. 10 CFR 50 Appendix A, GDC 21, "Protection System Reliability and Testability," requires in part that protection systems be designed for high functional reliability commensurate with the safety function to be performed. 10 CFR 50, Appendix B, Criterion III, "Design Control," requires in part that quality standards be specified and that design control measures be provided for verifying or checking the adequacy of design. Criterion V, "Instructions, Procedures, and Drawings," requires in part that activities affecting quality should be prescribed by "documented. . . procedures. . . of a type appropriate to the circumstances. . . ." This BTP outlines such procedures for software. Further, Criterion VI, "Document Control," requires in part that "measures should be established to control the issuance of documents. . . which prescribe all activities affecting quality. . . . These measures should ensure that documents, including changes, are reviewed for adequacy and approved for release by authorized personnel. . . ." Rev. 4 — June 1997 Appendix 7-A BTP HICB-14-2 2. Relevant Guidance Reg. Guide 1.152, "Criteria for Digital Computers in Safety Systems of Nuclear Power Plants," which endorses IEEE Std 7-4.3.2, "IEEE Standard Criteria for Digital Computers in Safety Systems of Nuclear Power Generating Stations," provides guidance for complying with requirements for safety systems that use digital computer systems. Other applicable regulatory guides are discussed in the acceptance criteria sections below. Many standards exist that can be used to develop software for