Diarmaid Ruth

Untangling the Timelines of Safety in Design

August 6, 2025

(As for what scenarios do belong in the Design hazard register, an illustrative (but facetious) example is dropping the theodolite on your foot).The..

When is a control not a control?

August 6, 2025

Across many types of safety assessment activities, we are invited to consider how a hazard scenario would play out in the absence of controls. The..

Cutting Corners in Procedural HAZOP

October 2, 2024

For many of us who facilitate Hazop studies, procedural Hazops come our way only rarely. Despite a decade or so of facilitating continuous process..

SFAIRP Gone Mad?

April 20, 2024

A few years ago – around the time the Health & Safety at Work Act was coming into effect here in New Zealand – a friend and I met for a beer. He..