4d • General Discussion
Proof test coverage
Something that always makes me pause when reviewing designs…
Proof test coverage that somehow always ends up being 100% effective.
On paper it looks great.
The numbers work nicely.
The SIL calculation passes comfortably.
But in the real world I always find myself thinking:
Can we really detecting every dangerous failure with that test?
In my experience, this is a major cause of rework. If the design progresses to the point where commissioning documents are written and then a FSA or design review reveals overly optimistic proof test coverage it’s a lot of work to correct.
Anyone else experiencing this?
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Proof test coverage
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