- by Dr. Eric Scharpf, CFSE
- Tuesday, May 28, 2019
- Functional Safety
Duty of Care (Too Good to Be True Failure Rate Data)
I have received several calls lately to our Australia / New Zealand office about whether it is acceptable to use published failure rates that seem too good to be true.
The person calling is usually doing a SIL verification calculation for an operating plant or for an…
- by John Yozallinas, CFSE
- Tuesday, August 05, 2014
If There Was ONE THING You Need to Know About Using PIU
Have a formal process for tracking, recording, and classifying field shipments and failure returns.
If your product was designed well in the first place, even if strict adherence to IEC 61508 was not followed, your field failure rate should be pretty low.
Using Proven-In-Use (PIU) methodology will…