Guidance for Addressing Software Common cause Failure In High Safety-Significant Safety Related Digital I&c systems

Application Software Implementation Quality

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ML20245E561

10.6.2 Associated First Principles of Protection Against Software CCF

10.6
Application Software Implementation Quality
10.6.1
Goals
The goals for application software implementation quality areas follows
•
The method of expressing the application software implementation is readable, understandable, and testable.
•
The application software implementation is performed using the results of SDO 10.4.3.11.
•
The application software implementation satisfies the design resulting from the SDOs provided in Section 10.5
10.6.2
Associated First Principles of Protection Against Software CCF
•
First Principle 6.1 - Software quality depends on complete and correct requirements, design and implementation
10.6.3
Safe Design Objectives
Safe design objectives for achieving application software implementation quality are listed below
10.6.3.1
Each application software module is reviewed against the goals listed above.
10.6.3.2
When an application software module is produced by an automatic tool, the SDOs provided in Section 10.4 are demonstrated.

DRAFT B - August 2020
© NEI 2020. All rights reserved. nei.org 23 10.6.3.3
When an application software module consists of reused preexisting software, SDO
10.2.3.10 is demonstrated.

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