Document: NRC Regulatory Guide
Document ID: d6326081-f430-476d-8098-4edf00868dd9
Document Type: regulatory_guide
Title: Verification, Validation, Reviews, and Audits for Digital Computer Software Used in Safety Systems of Nuclear Power Plants + HISTORY - HISTORY 08/2012 – DG-1267 , Proposed Revision 2 01/2003 – DG-1123 , Proposed Revision 1 08/1996 – DG-1054 , Proposed Revision 0 (Rev. 2)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML1031/ML103160431.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.168
CFR Part: 
CFR Title: 

Content:
V&V tasks. The NRC does not endorse this annex because no consensus exists on measures for evaluation the quality and coverage of the V&V tasks. However, applicants and licensees may find it useful to provide feedback for the continuous improvement of the V&V process and to evaluate the software development processes and products. • Annex F, “Example of V&V Organizational Relationship to Other Project Responsibilities,” provides an organizational structured diagram, Figure F.1, which is endorsed by this regulatory guide with one exception. As described in Staff Regulatory Guidance position 3, the top three main organizational boxes; “Acquirer Program Management”, “Development Effort,” and “V&V Effort” demonstrate an acceptable relationship model; however the bottom three “Staff” boxes with reporting flows are excluded. • Annex G, “Optional V&V Tasks,” describes optional V&V tasks as an effort to provide a tailoring capability by allowing tasks to be added to the minimum set for safety-related software. The NRC staff considers some of these tasks to be necessary for meeting the regulatory requirements; however Annex G is not endorsed by this regulatory guide. DG-1267, Page 11 • Annex H, “Bibliography,” lists IEEE and ISO/IEC standards that are referenced in IEEE Std. 1012-2004. The bibliography provides sufficient detail to enable licensees to obtain further information regarding specific areas of the standard. IEEE Std. 1028-2008: • Annex A, “Comparison of Review Types,” compares management review, technical review, inspection, walkthrough, and audit as described within the standard. The NRC does not endorse this annex because it provides no guidance for implementing this standard. However applicants and licensees may find it useful in understanding the difference and the similarities of different types of reviews. • Annex B, “Bibliography,” lists IEEE and ISO/IEC standards that are referenced in IEEE Std. 1028-2008. The