Chapter 6.7 of EN 50128 and EN 50657 support tools and languages defines requirements for software tools that are used in a safety-relevant development process. Project team members in safety projects discuss the content and meaning of this chapter again and again. The following article summarizes the essential requirements and derives a practical guide for use in the project. What EN 50128 and EN 50657 call Supporting Tools is often referred to as Tool Qualification.

Further blog posts on related topics are:

• Tool qualification – The phantom pain of functional safety (part 2)!
• Tool qualification – The phantom pain of functional safety (part 1)!
• IEC 61508 – Tool qualification – When? Why? How?
• Compiler for safety critical software – What needs to be done?

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