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:
dence from cost and schedule considerations, sufficient to identify quality problems; initiate, recommend, or provide solutions; and verify implementation of solutions. Specifically, there shall be an acceptable organizational structure, including mapping of that structure, to what constitutes a sufficient application of an independent verification and validation (IV&V) organization. The guidance in IEEE Std. 1012-2004 for financial independence provides appropriate freedom with respect to the V&V organization’s budget, and the standard’s guidance for managerial independence provides appropriate freedom with respect to V&V schedules, as well as overall project cost and schedule considerations. Similarly, the IEEE Std. 1012-2004 guidance for technical independence satisfies the requirements in Criterion III of Appendix B that design verification or checking be performed by individuals or groups other than those who prepared the original design. Note that Clause C.4.1 of IEEE Std. 1012-2004 states that the V&V responsibility “is vested in an organization that is separate from the development organization.” The NRC staff position is that this does not mean that a separate company should perform independent V&V. However, the requirements specified in Criteria I and III of Appendix B described above must be met. 4. Conformance of Materials Criterion III states that measures are to be established for the selection and review for suitability of application of materials, parts, equipment, and processes that are essential to the safety-related functions of the structures, systems, and components to which Appendix B applies. Criterion VII states that measures are to be established to ensure that purchased material, whether purchased directly or DG-1267, Page 8 through contractors and subcontractors, conforms to the procurement documents. IEEE Std. 1012-2004 provides guidance for retrospective V&V of software that was not verified. Specifically, Clauses 1.1, 1.5, 4,