[Author’s Note: This series of articles predates my joining the AV industry. It may have some…
Category: SIS
Functional Safety for Autonomous Vehicles (Part1)
[Author’s Note: This series of articles predates my joining the AV industry. It may have some…
Uncertainty in SIL Calculations
Some time ago, I ran across a complex Safety Instrumented Function (SIF) that had a proof…
Getting Started in SIS Cybersecurity (Part 2)
In part 1 of this article, we covered the various standards and guidelines that are available…
Getting Started in SIS Cybersecurity (Part 1)
Unless you have been living in an underground bunker for the last decade, you are probably…
IEC 61511 is Wrong About Systematic Failures
The other day, a colleague stopped by my office to chat. We talked of the kids,…
Useful Life, Mission Time, and Proof Tests
I have seen several questions recently in online forums where engineers were unclear about the differences…
Hierarchical Bayesian Prior Use
I presented my paper “A Hierarchical Bayesian Approach to IEC 61511 Prior Use” [full paper] at the…
Global Congress on Process Safety – Highlights
The 14th Global Congress on Process Safety (GCPS) was held on April 22-26, 2018 in Orlando,…
When Safety Relays Attack!
It was a dark and stormy night. All was quiet at the operator console, when suddenly…