Good morning, visitors to the 2026 Spring Meeting and 22nd Global Congress on Process Safety! Be sure to visit PII’s Technical Director William Bridges’ presentation this morning at 11:00 AM Central in Room 361 – GRB (3, George R. Brown Convention Center) on Conditional Modifiers and Enabling Events, and then be sure to download the paper accompanying the presentation from our website’s Free Resources section:
CM and EC – Should you ever trust them – 2026 – FINAL.pdf
From the paper’s Abstract:
The originators of LOPA have always been reluctant to use conditional modifiers (CM), enabling events (EE), and conditional severities (CS) in LOPA. This is not from lack of experience in LOPA or CM/EE/CS. The hesitation to use these factors is because unlikely Independent Protection Layers (IPLs) and Initiating Events (IEs), these extra risk reduction factors cannot be periodically validated and because changes that effect these factors are usually not managed/recognized. The authors share their experience on when using such factors are appropriate and what limits of risk reduction as appropriate.
And while you’re at the conference, be sure to visit PII’s booth # 431 to talk about process safety with Bill and Matías, and learn more about our becoming part of the Trinity Consultants group!
