PHA in North America

An Alberta multi-discipline engineering consultancy listing PHA and HAZOP facilitation within its process-engineering practice, a fit for operators wanting hazard-study facilitation from a firm that also carries the process design work.

A Louisiana licensed engineering firm with a dedicated process hazards analysis facilitation practice, a fit for onshore and offshore oil & gas operators wanting facilitators, technical guides and scribes for full-facility HAZOPs, revalidations and what-ifs, including remote PHAs.

A California process-safety and regulatory-compliance engineering firm whose engineers facilitate and scribe HAZOP, What-If and HAZID studies, a fit for US operators managing EPA RMP, OSHA PSM and CalARP programs alongside their process hazard analyses.

A boutique process-safety consultancy focused on PSM compliance for oil and gas operating companies, a fit for small to mid-sized operators wanting remotely facilitated PHAs and HAZOP/LOPA reviews scheduled around operations.

A Houston fire, risk and process safety consultancy offering process hazard analysis facilitation alongside fire and explosion modelling, a fit for oil, gas, LNG and power operators wanting HAZOP/PHA facilitation combined with consequence modelling, LOPA and SIL work.

A Newfoundland engineering consultancy that supplies expert leadership, facilitation and software for HAZID, HAZOP, PHA, LOPA and scenario-based risk assessments, a fit for onshore and offshore energy, mining and utilities operators in Atlantic Canada wanting facilitation alongside technical and process-safety engineering.

A Calgary process-safety consultancy whose team states it has facilitated thousands of risk assessments for EPCs and operators, a fit for oil and gas, refining and chemical clients wanting HAZOP, HAZID, What-If, CHAZOP and LOPA facilitation alongside QRA, functional safety and PSM support.

A Calgary-based oil and gas engineering consultancy whose specialist services include facilitation of HAZOP, HAZID, What-If and LOPA studies by a Certified Functional Safety Expert, a fit for upstream, midstream and downstream operators running smaller tie-in, de-bottlenecking and optimisation projects.

A Houston-based oil and gas consultancy with a dedicated team of PHA facilitators offering on-site and remote HAZOP/HAZID facilitation, scribing and PHA revalidation, a fit for operators managing OSHA PSM, EPA RMP and BSEE SEMS compliance.

A California-based process safety and environmental boutique offering HAZOP/LOPA facilitation with strong US regulatory coverage (EPA RMP, OSHA PSM, CalARP) — a fit for domestic operators needing PHA delivered inside a compliance program.

A principal-led Colorado process-engineering practice offering HAZOP and PHA facilitation and documentation as part of senior, PE-stamped support for regulated industrial projects — a fit for owners and EPCs needing on-demand process-safety facilitation.

An engineer-owned US process-safety consultancy that facilitates PHA/HAZOP studies alongside PSM/RMP program development, compliance audits and facility siting — integrated with asset-integrity, reliability and process-engineering services under one roof — a fit for refining, petrochemical and chemical operators across North America.

A Calgary process-safety-management consultancy offering Process Hazard Analysis alongside overpressure/relief risk assessment, fire-protection and loss-prevention consulting — a fit for Alberta oil & gas, petrochemical and process operators.

A Sarnia (Ontario) process-safety, reliability and risk consultancy offering PHA facilitation — HAZID, HAZOP and What-If — alongside LOPA, SIL determination and verification, alarm-management and RAM studies, and IEC 61511 life-cycle support.

A Canadian health, safety and process-safety consultancy offering HAZOP/PHA facilitation — HAZOP, LOPA, What-If and FMEA — alongside PSM program development to CSA and OSHA requirements, working across Canada and the United States.

An ADNOC-approved inspection and engineering consultancy (established in Cairo in 2001, now headquartered in Abu Dhabi with offices in Egypt, Iraq, Oman and Canada) whose Risk Engineering practice facilitates HAZID/ENVID, HAZOP/PHA, LOPA and SIL assessment studies for oil, gas and petrochemical assets.

An India-based process-safety consultancy whose staff run the full PHA toolkit — HAZOP, LOPA, What-If and QRA — backed by an in-house reactive-chemistry lab for ARSST thermal-stability testing.

Small, independent US process-safety consultancy that facilitates HAZOPs, dust hazard analyses and LOPAs and shares its methods so client teams can carry the work forward — a fit for chemical, refining, oil-and-gas and grain-handling operators wanting lean, facilitator-led studies.

A US process-safety consultancy whose FidelisCore team provides experienced, independent PHA facilitators for HAZOP, What-If and LOPA studies across refining, petrochemical, hydrogen and LNG operations — a fit for OSHA PSM-covered operators needing initial PHAs, five-year revalidations or MOC-triggered studies led by an independent chair.

A Texas-based safety, risk and fire consultancy whose consultants facilitate and scribe the full range of PHA studies — HAZOP, HAZID, LOPA, What-If, FMEA, Bow-Tie and SIS reviews — a fit for Gulf Coast refining, petrochemical and chemical operators needing an independent facilitator, a scribe, or revalidation of existing studies under OSHA PSM and EPA RMP.

A process safety specialist that both leads PHA studies and joins them as a subject-matter participant — a fit for pharmaceutical, chemical, food and metals operators who want an experienced facilitator for a HAZOP, What-If or FMEA, a revalidation of an existing study, or dust- and reactive-hazard expertise brought into the review team.

Ontario engineering consultancy that facilitates Process Hazard Analyses — HAZOP and What-If — using PHA-Pro, a fit for Canadian and international operators implementing PSM, EPA RMP, Seveso/COMAH or IEC 61511 risk programs.

A large environmental and engineering consultancy whose process-safety team has facilitated hundreds of PHAs — HAZOP, LOPA, FMEA and What-If — with remote or co-located facilitation, scribing, revalidation and QA/QC review, a fit for US and international operators wanting facilitation backed by a full PSM/RMP compliance practice.

A specialist risk-management consultancy (part of TUV Rheinland) with a large pool of client-approved HAZOP/PHA and LOPA chairs and proficient scribes, working from offices in the UK, Netherlands, Middle East (Doha, Dubai), Southeast Asia (Kuala Lumpur, Singapore) and North America — a fit for operators wanting facilitation from an established international bench across high-hazard industries.

A Houston-area (Pearland, Texas) process-safety consultancy whose facilitators have led hundreds of PHAs — HAZOP, HAZID, LOPA, What-If and SIL — for oil & gas, petrochemical, refining and ammonia-refrigeration sites, a fit for OSHA PSM / EPA RMP-covered US operators wanting an experienced independent PHA chair.

A Calgary-based independent whose facilitator pairs process-safety method with deep process-engineering knowledge, stating more than 10 years in facilitation and over 35 years in the oil & gas industry — a fit for operators wanting a hands-on chair for HAZOP, What-If and LOPA studies.

A US process-safety consultancy focused on PHA/HAZOP facilitation and SIL/LOPA verification for petroleum and energy operators, offering either a combined lead-and-scribe facilitator or a separate scribe, and fluent in PHA-Pro and PHAWorks documentation.

A US EHS-compliance consultancy whose dedicated PHA team facilitates full-facility HAZOPs, PHA revalidations and project-specific hazard reviews — a fit for manufacturers wanting facilitation bundled with wider OSHA and EPA compliance support.

A Texas process-safety consulting and testing center whose PHA offering (HAZOP, LOPA, HIRA) sits alongside a strong combustible-dust and electrostatic-hazard specialty — useful for solids-handling and powder-processing plants needing both dust testing and hazard facilitation.

A Canadian process-safety boutique focused on chairing and facilitating PHA sessions — HAZOP, HAZAN, HAZID, What-If, LOPA and SIL — that travels to client sites worldwide, with a sideline in PHA methodology and PHA-Pro software training for oil & gas, chemical, petrochemical and mining operators.

Bogotá-based process-risk consultancy delivering HAZOP studies in Spanish across Latin America, with a US office in Florida and its own PHA and bow-tie software — a local-language option for Colombian and wider Latin American chemical, petrochemical and oil & gas operators, and the directory's first Colombian firm.

Mexican reliability- and process-risk engineering consultancy running HAZOP, HAZID and What-If studies in Spanish with PHA-Pro deliverables, within a wider practice spanning FMEA, explosion-risk assessment and risk-based inspection — the directory's first Mexican firm and a local-language option for operators across Mexico.

Calgary process- and functional-safety boutique whose named principals hold CFSE and TÜV Rheinland functional safety credentials — a fit for Canadian and US operators wanting PHA facilitation joined up with SIS/SIL lifecycle, alarm management and fire & gas work under CSA Z767 and IEC 61511.

Calgary-based facilitator that has run thousands of HAZOPs for Canadian and international oil & gas operators, documenting studies live in PHA-Pro — a fit for greenfield and revalidation studies across energy, power and process assets.

Combines HAZOP facilitation with in-house, ISO/IEC 17025-accredited dust flammability and chemical reaction hazard (DSC/ARC) testing labs — useful when a study raises reactive- or explosion-hazard questions the team can't answer from the P&ID.

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

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

The global giant: multinationals standardizing HAZOP delivery across dozens of sites in different countries usually end up talking to DEKRA.

One of the longest-standing PHA houses — decades of methodology work, and a strong option if you want your in-house team trained to run studies themselves.

Relief-systems specialists who also facilitate — efficient when overpressure protection is where most of your action items will land anyway.

Pairs classic PHA facilitation with security vulnerability analysis — one of the few benches covering both safety and security risk in one study cycle.