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.

21listed consultants
7regions covered
18industries
5 yrsPHA revalidation cycle*

*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

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Firm

Quest Consultants

new HAZOP chairHAZOP scribe

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.

Norman, Oklahoma, USA North AmericaGlobal
Firm

exida

new HAZOP chairCHAZOP

The functional-safety heavyweight — the natural choice when your HAZOP feeds directly into LOPA, SIL determination, and safety instrumented systems work.

Sellersville, Pennsylvania, USA North AmericaEuropeGlobal
Firm

Sigma-HSE

new HAZOP chairHAZOP-LOPA

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.

Winchester, UK (offices in USA & India) UKEuropeNorth AmericaAsia
Firm

Saltegra Consulting

new HAZOP chairHAZOP scribe

Boutique PHA specialist that will assemble the full study team — facilitator, scribe, and subject-matter experts — rather than just parachuting in a chair.

Los Angeles, California, USA North America
Firm

Risk Alive Analytics

new HAZOP chairPHA revalidation

The data-driven outlier: pairs PHA facilitation with analytics run over thousands of past studies, so your HAZOP gets benchmarked rather than filed.

Calgary, Alberta, Canada North AmericaGlobal
Firm

Process Safety Consulting Ltd

new HAZOP chairHAZOP scribe

IChemE-certified chairs with experience from half-day studies to six-month campaigns — the certification signal UK operators tend to ask for first.

United Kingdom UKEurope

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