Document: NUREG-0800
Document ID: 965060de-8238-4868-a4c8-9a07c3e8cf13
Document Type: srp
Title: Diversity and
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1515/ML15159A199.pdf
Revision Date: 2023-06
Chapter: 7
Section ID: 7.9
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Content:
ersion. This will normally be accomplished by confirming the qualification of the mechanism and tools for performing this translation (e.g., a COTS compiler and linker) and reviewing integrated system testing, installation, and preoperational test reports. One approach to conducting product inspections that has proved successful is the use of string audits that follow selected functional requirements through the design outputs previously described. The scope and depth of the product inspections should be tailored to the extent, complexity, and safety significance of the digital system under review. SRP BTP 7-14, Subsection B.3.3, presents specific criteria from which the inspection activities for a specific product may be derived. For applications for an operating license amendment, the product inspections should also confirm that the reviewed systems are installed, operated, and maintained appropriately. NRC Inspection Manual Chapter 52001, “Digital Retrofits Receiving Prior Approval,” provides guidance for inspecting these activities. For new reactor applications, the licensee’s implementation of the lifecycle design outputs will be verified through the construction inspection program. For applications under 10 CFR Part 52, appropriate ITAAC should be in identified in the application to verify design outputs of the lifecycle activities. SRP Section 14.3.5 provides acceptance criteria for software lifecycle ITAAC. Appendix 7.0-A-15 Draft Revision 6 – August 2015 3.8 Review of the Acceptance of Commercial-Grade Digital Equipment All software, including operating systems, that is resident on safety system computers at run time must be qualified for the intended applications. Qualification may be established either by producing the PDS items under a 10 CFR Part 50, Appendix B, quality assurance program or by dedicating the item for use in the safety system as defined in 10 CFR Part 21, “Reporting of Defects and Noncompliance.” Review topics for the former