Document: NRC Regulatory Guide
Document ID: 3eb179d3-5491-407d-8b0e-eed083d58a17
Document Type: regulatory_guide
Title: Configuration Management Plans for Digital Computer Software Used in Safety Systems of Nuclear Power Plants + HISTORY - HISTORY 08/2012 – DG-1206 , Proposed Revision 1 08/1996 – DG-1055 , Proposed Revision 0 (Rev. 1)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML1032/ML103200044.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.169
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on, and release of a change. The criteria for verification must meet the requirements of Criterion III, which requires that design changes be subject to design control measures commensurate with those applied to the original design. This encompasses the reexamination of any appropriate safety analysis related to the change. 11. Software Configuration Management Plan Clause 3.1(g) of IEEE Std. 828-2005 requires the SCM plan to address the assumptions upon which the plan is based, including assumptions that might have an impact on cost and schedule. Any use of cost and schedule criteria must be consistent with the requirement of 10 CFR 50.57(a)(3) that there be reasonable assurance that the activities authorized by the operating license can be conducted without endangering public health and safety. 12. Release Management and Delivery Clause 3.3.7 of IEEE Std. 828-2005 requires that the SCM plan describe how the building, release, delivery, change control, master copies of code, and documentation of software will be formally controlled “in accordance with the policies of the organizations involved.” This control should include the preservation of materials used to deliver the software and a change control mechanism sufficient to ensure the correction of faults identified in the software. 13. Backfit Clarification Clause 1.1 of IEEE Std. 828-2005 states: “It also applies to noncritical software and to software already developed.” Such statements in the standard should not be interpreted as requirements for backfit as defined in 10 CFR 50.109, “Backfitting.” Section D of this regulatory guide provides the NRC staff position on backfitting as it concerns this guidance. 14. Annexes IEEE Std. 828-2005 contains two informative annexes. These annexes are listed here as sources of information; they have not received regulatory endorsement unless otherwise noted: DG-1206, Page 10 Annex A, “Bibliography,” lists IEEE standards that are useful in implementing and