One of the fundamentals of the Probability of Failure on Demand (PFDavg) calculations in SIL verification analysis, is the concept of a constant failure-rate during useful life of the equipment. Probabilistic calculations assume that the failure rate of the devices used in a Safety Instrumented System (SIS)…
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Entries tagged with: Safety Instrumented Functions
- by Steve Gandy, CFSP
- Thursday, June 22, 2017
- Functional Safety
Why Run-to-Fail Is Not A Good Maintenance Strategy For SIS
- by Iwan van Beurden, CFSE
- Monday, June 16, 2014
- Certification
World Cup Fever & Failure Rates
Do you have World Cup Fever? Well I do. Especially after the Netherlands (Holland) beat Spain 5-1 on Friday. I wished that was the score last time they played. So what does this have to do with failure rates? Sometimes my mind works in odd ways. While driving home…