Our Stories

A collection of our Blogs, Articles, and Whitepapers

Taking credit for unplanned shutdowns as a Proof Test

Exploring the concept of taking proof test credit for an unplanned shutdown in order to delay a Safety Instrumented Function (SIF) proof tes

Using Small Data to Support Decision Making When LOPA Fails

Data is needed to confidently claim a parameter value, starting with an assumed or generic value, and periodically updating that value with

A Tale of Two BPCS Credits, A Bayesian Case Study

Have you ever had the problem of having a perfectly functional BPCS* interlock that you know is highly failure immune, yet when it comes...

Improving the Safety Instrumented System (SIS) Design Process with Graphic Diagrams

Examples of the different types of graphic diagrams, methods in which the diagrams were utilized, and the benefits that each provided in th

Reverend Bayes, Meet Process Safety-Use Bayes’ Theorem to Establish Site Specific Confidence in LOPA

Bayes’ Theorem is sorely missing from the toolbox of Process Safety practitioners. This paper will introduce Bayes’ Theorem to the reader an

How Taking Credit for Planned and Unplanned Shutdowns Can Help You Achieve Your SIL Targets

Achieving Safety Integrity Level (SIL) targets can be difficult when proof test intervals approach turnaround intervals of five years or mor

Can we achieve Safety Integrity Level 3 (SIL 3) without analyzing Human Factors?

Incorporate quantitative Human Factors into a SIL analysis. Representative operating units at various stages of maturity in human factors an

What is Truth? Do SIL Calculations Reflect Reality?

Are random hardware failures the only thing that cause a safety instrumented function (SIF) to fail? What if our assumptions are wrong? What