Typical Common Cause?

Background A few weeks ago, I commented on an interesting LinkedIn thread about independence and common…

SISEngineer.com is Dead

Long Live SISEngineer.com! In late 2016, I started a little blog called SISEngineer.com focused on functional…

Monte Carlo SIL Calculations

Monte Carlo simulation allows uncertainty to be incorporated in SIL calculations and can be done with…

Overpressure Protection Pitfalls

Admittedly, I have not been the best blogger this year. In my defense, I have been…

Uncertainty and Bayesian Inference Video

We are proud to introduce our first SISEngineer.com original video. This video gives a brief non-technical…

Fail Safe Regulators

The humble airset filter regulator does not get a lot of love.  Relegated to a lonely…

Functional Safety for Autonomous Vehicles (Part 3)

[Author’s Note: This series of articles predates my joining the AV industry. It may have some…

SIS Survivability and Fire Safety

In my experience, few subjects cause more confusion and misunderstanding in the instrumentation and SIS arena…

Human Error and Systematic Failures

Today I want to highlight an excellent paper “Improving Barrier Effectiveness Using Human Factors Methods” recently…

Bayesian Coin Flipping

The following is a quick example illustrating how the Bayesian updating process can be used to…