Document: NUREG-0800
Document ID: b9d43224-eb4e-4b19-a212-b3bb8c0ffbb5
Document Type: srp
Title: Diversity and
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0706/ML070660258.pdf
Revision Date: 2023-06
Chapter: 7
Section ID: 7.9
CFR Part: 
CFR Title: 

Content:
rements have been properly implemented at each phase of the software development process. Verification and validation analyses and test reports should also be examined to extract information about the design output's conformance with system functional requirements and to verify critical hardware and software characteristics. The inspections should also examine software development process characteristics to confirm that the products embody characteristics that are evidence of an effective and visible software development process. This step provides confidence that positive findings for the sample functional requirements to be inspected are representative of the software product as a whole. The combination of positive findings in the review of development plans, process implementation, and design outputs provides a high degree of confidence that all of the software conforms with the fundamental system requirements. This approach requires that the integrity of design outputs be maintained in the translation of code to machine language. Consequently, the staff's review should include confirmation of the integrity of this conversion. 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 pre-operational 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 operating license, operating license amendment, or combined license applications, the product inspections should