nrc-nuclear pack: content licence ================================= This pack is derived from the seven US Nuclear Regulatory Commission (NRC) sources listed below (S1 to S7 of the source-vetting record). Their landing-page URLs are held in the local source manifest dated 2026-09-26 and are not reproduced here; the repository link policy bans source-material hosts (see ../../docs/LICENSING.md). Source licence: Public Domain (US Government work, 17 U.S.C. ยง 105) (tier 1; see ../../docs/SOURCE-VETTING.md). No source-material download link is published. All seven sources are works of the United States Government prepared by NRC staff, and are NOT subject to copyright protection in the United States (17 U.S.C. 105). They are in the public domain: anyone may reproduce, transform, and redistribute them for any purpose, including commercially, without permission and without any attribution or share-alike obligation. Attribution to the NRC is provided as a courtesy (see the repository NOTICE), not as a legal obligation. The NRC does not endorse this pack or its authors. Each source below carries a vetting block: exact title, revision and date, ML accession, licence basis, what the pack reconstructs from it, and the chapters that use it. Titles and section structures were checked against the local source-text captures on 2026-09-26. Reconstruction: all pack content is synthesized reference notes in the authors' own words. The documents themselves are not republished here; quotations are limited to short passages (two-sentence cap per quote, enforced by the pack gates). NOTE: This file governs the CONTENT of this pack. The repository tooling is licensed separately under MIT (see ../../LICENSE). THE SEVEN SOURCES ================= S1 Regulatory Guide 1.168, "Verification, Validation, Reviews, and Audits for Digital Computer Software Used in Safety Systems of Nuclear Power Plants" Publisher: US Nuclear Regulatory Commission Revision 2 Issued: July 2013 ML accession: ML13073A210 Licence: Public Domain (US Government work) Reconstructs: the guide's purpose and discussion background, and the staff regulatory guidance on verification and validation of digital computer software used in safety systems: software integrity, software reliability, independence of software verification and validation, conformance of materials, quality assurance, tools for software development, verification and validation tasks, and reviews and audits. Used in: ch01, ch05 S2 Regulatory Guide 1.169, "Configuration Management Plans for Digital Computer Software Used in Safety Systems of Nuclear Power Plants" Publisher: US Nuclear Regulatory Commission Revision 1 Issued: July 2013 ML accession: ML12355A642 Licence: Public Domain (US Government work) Reconstructs: the guide's purpose and discussion background, and the staff regulatory guidance on the content of a software configuration management plan: configuration identification, configuration control, interface control, and configuration status accounting for safety-system software. Used in: ch01, ch04 S3 Regulatory Guide 1.170, "Test Documentation for Digital Computer Software Used in Safety Systems of Nuclear Power Plants" Publisher: US Nuclear Regulatory Commission Revision 1 Issued: July 2013 ML accession: ML13003A216 Licence: Public Domain (US Government work) Reconstructs: the guide's purpose and discussion background, and the staff regulatory guidance on software test documentation: the test plan, test design specification, test case specification, test procedure, and test results and reports for safety-system software. Used in: ch01, ch06 S4 Regulatory Guide 1.171, "Software Unit Testing for Digital Computer Software Used in Safety Systems of Nuclear Power Plants" Publisher: US Nuclear Regulatory Commission Revision 1 Issued: July 2013 ML accession: ML13004A375 Licence: Public Domain (US Government work) Reconstructs: the guide's purpose and discussion background, and the staff regulatory guidance on unit testing of safety-system software: unit test planning, test case design and coverage, test execution and recording, and evaluation of unit test results. Used in: ch01, ch06 S5 Regulatory Guide 1.172, "Software Requirement Specifications for Digital Computer Software and Complex Electronics Used in Safety Systems of Nuclear Power Plants" Publisher: US Nuclear Regulatory Commission Revision 1 Issued: July 2013 ML accession: ML13007A173 Licence: Public Domain (US Government work) Reconstructs: the guide's purpose and discussion background, and the staff regulatory guidance on the content of a software requirements specification for safety-system software and complex electronics: functional and performance requirements, design constraints, and the qualities of a good requirements specification. Used in: ch01, ch03 S6 Regulatory Guide 1.173, "Developing Software Life-Cycle Processes for Digital Computer Software Used in Safety Systems of Nuclear Power Plants" Publisher: US Nuclear Regulatory Commission Revision 1 Issued: July 2013 ML accession: ML13009A190 Licence: Public Domain (US Government work) Reconstructs: the guide's purpose and discussion background, and the staff regulatory guidance on developing software life cycle processes: process definition and integration, development, verification and validation, configuration management, and the software plans that document them. Used in: ch01, ch02 S7 NUREG-0800 Standard Review Plan, Branch Technical Position 7-14, "Guidance on Software Reviews for Digital Computer-Based Instrumentation and Control Systems" Publisher: US Nuclear Regulatory Commission Revision 6 Issued: August 2016 ML accession: ML16019A308 Licence: Public Domain (US Government work) Reconstructs: the staff's software review positions: the background and review of the description of the software aspects of the application; the information to be reviewed; the acceptance criteria for planning (the software management, development, quality assurance, integration, installation, maintenance, training, operations, and safety plans, plus the verification and validation, configuration management, and test plan reviews); the acceptance criteria for implementation; the acceptance criteria for design outputs (the requirements, architecture, and design outputs, and the implementation, integration, and installation outputs); and the review procedures. Used in: ch01, ch02, ch04, ch05, ch06, ch07 EXCLUDED MATERIAL (cited by designation and edition only; no text reproduced) ============================================================================= The following standards and guides are endorsed, referenced, or adjacent to the seven sources. They are NOT licensed to this pack: the NRC documents name them, and the pack restates only the NRC's own recognition and discussion text. It reproduces no standard text, table, requirement, or clause wording from any of them. - X1 IEEE Std 603-1991, criteria for safety systems for nuclear power generating stations. Copyrighted; cited by designation and edition only. - X2 IEEE Std 7-4.3.2-2003, criteria for programmable digital devices in safety systems. Copyrighted; cited by designation and edition only. - X3 IEEE Std 828-2005, configuration management in systems and software. Copyrighted; cited by designation and edition only. - X4 IEEE Std 829-2008, software test documentation. Copyrighted; cited by designation and edition only. - X5 IEEE Std 830-1998, recommended practice for software requirements specifications. Copyrighted; cited by designation and edition only. - X6 IEEE Std 1008-1987, software unit testing. Copyrighted; cited by designation and edition only. - X7 IEEE Std 1012-2004, software verification and validation. Copyrighted; cited by designation and edition only. - X8 IEEE Std 1028-2008, software reviews and audits. Copyrighted; cited by designation and edition only. - X9 IEEE Std 1074-2006, developing software life cycle processes. Copyrighted; cited by designation and edition only. - X10 IEC 60880, edition 2.0, 2006, software for I&C systems performing category A functions. Copyrighted; cited by designation and edition only. - X11 IEC 61513, edition 2.0, 2011, nuclear power plant I&C important to safety. Copyrighted; cited by designation and edition only. - X12 IEC 62138, edition 2.0, 2018, software for I&C systems performing category B or C functions. Copyrighted; cited by designation and edition only. - X13 IAEA safety guides on computer-based safety systems of nuclear power plants (for example SSG-39). Copyrighted; cited by designation only. - X14 Regulatory Guide 1.152, Revision 4, July 2023 (ML23054A463), guidance on programmable logic controllers in non-safety applications. A US Government work and therefore public domain, but outside this pack's pinned source set; named as an adjacent document only. - X15 NUREG-0800 Branch Technical Position 7-18, Revision 6 (ML16019A327), and Branch Technical Position 7-19, Revision 9, May 2024 (ML24005A077), with Standard Review Plan Appendix 7.1-D, Revision 1 (ML16019A114), on guidance for evaluation of defense in depth and diversity. US Government works outside the pinned source set; named as adjacent documents only. - X16 NUREG/CR contractor reports supporting the endorsed standards (for example NUREG/CR-6463 on safety software). Named by designation only; no contractor-report text is reproduced. Buy copyrighted items from IEEE, IEC, or IAEA as applicable. The designation and edition citations above exist so a reader can locate the standards; the cleared status of S1 to S7 and the exclusion rationale are recorded in ../../docs/SOURCE-VETTING.md.