Diarmaid Ruth

Untangling the Timelines of Safety in Design

August 6, 2025

Why Safety in Design Matters The 2004 film Primer has a notoriously complex plotline. In one scene, our protagonists load the parts for a time..

What Qualifies as a Control in Process Safety?

August 6, 2025

What Is Considered a Control in HAZOP, Bowties, and Safety Assessments? Across many types of safety assessment activities, we are invited to..

How to Run an Efficient Procedural HAZOP Without Missing Real Risks

October 2, 2024

Why Cutting Corners in HAZOP Is a Concern For many of us who facilitate Hazop studies, procedural Hazops come our way only rarely. Despite a decade..

SFAIRP in Practice: How to Prevent Over‑the‑Top Safety Measures

April 20, 2024

What SFAIRP Means in Safety Management A few years ago – around the time the Health & Safety at Work Act was coming into effect here in New Zealand –..