Hazard & Operability Studies
Every HAZOP consultant,
one directory.
Finding a good facilitator still runs on word-of-mouth and luck. We index the firms and independent chairs, by region, industry, and service — free to browse, free to be listed.
Read by working consultants: weekly industry news, notable studies, and a clear view of who's active where.
*OSHA PSM (29 CFR 1910.119) requires process hazard analyses to be revalidated at least every five years.
Latest news
CSB final report on Givaudan Louisville explosion: runaway reaction, undersized relief, and a control room 40 feet away
The CSB's final report on the fatal November 2024 reactor rupture finds an unrecognized runaway decomposition reaction, an emergency relief system four times too small, and facility siting failures.
Read the story →Recently listed
All consultants →Quest Consultants
Long-running risk consultancy whose facilitators and scribes work across the major PHA software platforms — a safe pair of hands for full-scope HAZOP delivery.
exida
The functional-safety heavyweight — the natural choice when your HAZOP feeds directly into LOPA, SIL determination, and safety instrumented systems work.
Sigma-HSE
Combines HAZOP facilitation with in-house process safety testing labs — useful when the study raises reactive-hazard questions the team can't answer from the P&ID.
Saltegra Consulting
Boutique PHA specialist that will assemble the full study team — facilitator, scribe, and subject-matter experts — rather than just parachuting in a chair.
Risk Alive Analytics
The data-driven outlier: pairs PHA facilitation with analytics run over thousands of past studies, so your HAZOP gets benchmarked rather than filed.
Process Safety Consulting Ltd
IChemE-certified chairs with experience from half-day studies to six-month campaigns — the certification signal UK operators tend to ask for first.
The Chair — daily
The HAZOP field, in one email a day.
Industry news, contracts and projects, standards moves, and who's winning work — read by the people who run the room.
Free forever. Unsubscribe anytime. Powered by Buttondown.
News & guides
All articles →News
CSB final report on Givaudan Louisville explosion: runaway reaction, undersized relief, and a control room 40 feet away
The CSB's final report on the fatal November 2024 reactor rupture finds an unrecognized runaway decomposition reaction, an emergency relief system four times too small, and facility siting failures.
News
hazop.cc launches: the HAZOP consulting market, indexed
21 firms and independent facilitators across 7 regions at launch — plus a weekly brief on industry news and who's winning work. Here's what we're building and why.
News
EPA's RMP rollback proposal: what changes for PHA and compliance work as the final rule approaches
EPA's February 2026 proposal would scale back the 2024 RMP amendments — reduced STAA requirements and closer alignment with OSHA PSM. Comments closed in April; a final rule is expected late 2026.
Are you a HAZOP consultant?
Listings are free and compiled from public information. Claim yours to correct details, add certifications, or get removed.