procedures for heater de-isolation and startup after maintenance.
No improvement actions were raised as a result of studying this scenario. This may imply that everyone was satisfied with existing arrangements. Also, there was an ongoing project to review and potentially upgrade the coil high temperature trip following a LOPA study (
see below). The PHR will be revisited on a regular basis (every five years) and future revisions will have the benefit of input from the LOPA.
The PHR achieved its objectives by identifying major accident hazard (MAH) scenarios and reviewing safeguards and included some prompts to consider whether risks for certain scenarios are ALARP. Although the study report demonstrated a thorough review of hazards and risks, it did not make any explicit claims regarding overall risks being ALARP.
Article by Adam Duckett
ICHEME has published a new book showcasing the works of process safety pioneer Trevor Kletz.
Kletz has had a huge impact on the way those in the process industries viewed accidents and safety. He was one of the first people to tackle the issues and became internationally renowned for sharing his ideas on process safety that he developed from almost 40 years in the chemical industry.
Trevor Kletz Compendium: His Process Safety Wisdom Updated for a New Generation has been compiled by members of IChemE’s process safety community.
Andy Brazier, who led the team of authors, said: “Trevor Kletz was ahead of his time and many of his ideas and the process safety lessons he shared remain relevant today. The aim of the compendium was to share his work with a new audience and to prompt people who may have read his books in the past to have another look. Trevor did not expect everyone to agree with everything he said, but he was willing to share his opinions based