Document: NRC Regulatory Guide
Document ID: 12dd3f35-6baa-4f6a-8372-84c90ef96a91
Document Type: regulatory_guide
Title: Test Documentation for Digital Computer Software Used in Safety Systems of Nuclear Power Plants + HISTORY - HISTORY 08/2012 – DG-1207 , Proposed Revision 1 08/1996 – DG-1056 , Proposed Revision 0 (Rev. 1)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML0833/ML083370243.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.170
CFR Part: 
CFR Title: 

Content:
e considered as early as possible in the life- cycle phases. The NRC further supplements this V&V life-cycle approach by providing secure DG-1207, Page 6 development and operational environment (SDOE) guidance when developing a digital safety system. To meet the criteria of IEEE Std. 603-1991 and 10 CFR 50, Appendix B, the development of digital safety system software requires a SDOE be provided, Regulatory Guide 1.152, “Criteria for Use of Computers in Safety Systems in Nuclear Power Plants” provides specific guidance concerning the establishment of the SDOEs. Applicants should be aware that other NRC requirements and guidance may lead to specific cyber security controls during the software development process and /or the inclusion of security features in or around digital safety systems that should also be documented; however, a licensee’s adherence to the provisions of 10 CFR 73.54, “Protection of Digital Computer and Communication Systems and Networks,” (Ref. 15) will be evaluated per regulatory programs specific to that regulation and in accordance with the applicant's NRC-approved cyber security plan. IEEE Std. 829-2008 is not endorsed in this regulatory guide as being appropriate for compliance with 10 CFR 73.54. This regulatory guide is based on standards and describes methods acceptable for any safety system software and discusses the required test documentation activities. The applicant or licensee determines how the required activities will be implemented. Other Codes and Standards This regulatory guide endorses the use of one or more voluntary consensus codes or standards developed by external organizations. These codes or standards may contain references to other codes or standards. These references should be considered individually. If a referenced standard has been incorporated separately into NRC regulations, licensees and applicants must comply with that standard as set forth in the regulation. If the referenced standard has been endorsed