Process Hazard Analysis (PHA) is a systematic review of industrial processes to identify potential hazards, and is required by OSHA and EPA regulations. It involves methodologies like Hazard and Operability Study, What-If analysis, Failure Mode and Effect Analysis, and Hazard and Operability Study. Process Risk consultants have performed hundreds of PHAs globally in many industries using these methods.

1. Copyright © Process Risk, LLC.
Process Hazard Analysis (PHA)
The Process Hazard Analysis (PHA) is the core of a Process
Safety Management (PSM) program. It refers to a systematic
review of a process to identify potential hazards and operability
problems through the use of several different methodologies.
OSHA Process Safety Management (PSM) (29 C.F.R. §
1910.119(e)) and EPA Accidental Release Prevention
Requirements for Program 3 (40 C.F.R. § 68.67) require a hazard
analysis for all subject processes. PHA methodologies include:
 Hazard and Operability Study (HAZOP)
 What-If?/Checklist
 Layer of Protection Analysis (LOPA)
 Failure Modes and Events Analysis (FMEA)
 Bow-tie analysis
Over the past 30 years, Process Risk consultants have performed
hundreds of PHA studies in all industries using these and other
methodologies. Our world-wide experience ranges from project
PHAs, FEED phase studies through design stage PHAs, re-dos
and revalidation PHAs, Management of Change (MOC) PHAs as
well as procedural PHAs. We have expertise with all industries
and systems. We also perform advanced level studies such as
Layer of Protection Analysis (LOPA) and a full range of Safety
Instrumented Systems (SIS) services.
Our consultants have conducted training in the United States and internationally, presented papers on the subject at
industry conferences, and maintained a keen understanding of the latest techniques through constant exposure in the
field as PHA team leaders.
We are experienced in using all popular PHA study software platforms including PHA-Pro™, PHAWorks©
, LeaderTM
(Hazard Review Leader) and others. These advantages make Process Risk the right choice for PHA team leader / scribe
services. We also offer training on how to conduct these studies using various popular techniques.
Contact us at: info@process-risk.com
www.ProcessHazardAnalysis.com www.Process-Risk.com
 Process Hazard Analysis (PHA) Studies:
HAZOP, What-if/Checklist, FMEA, etc.
 Layers of Protection Analysis (LOPA)
 Quantitative Risk Analysis (QRA)
Fault Tree / Event Tree
 Management of Change (MOC) Reviews
 Bow-tie Analysis
 Safety Instrumented Systems (SIS)
ANSI/ISA 84.00.01,
IEC 61508/61511
 SIS Safety Life Cycles
 SIL Verification
 C-HAZOP, E-HAZOP
 Inherently Safer Technology (IST) Analysis
 Human Factors & Human Error Analysis
 Project Safety Reviews
 Project Constructability Reviews
 Training
HAZARD AND PROCESS RISK ANALYSIS SERVICES

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Specific Processes / Equipment Studied:
 Aromatics Extraction Units
 Air/Nitrogen/Natural Gas Supply Systems
 Alkylation
 Amine Treaters / Sulfur Recovery Units
 Ammonia Handling and Injection
 Ammonia Manufacturing
 Ammonia Refrigeration Systems
 Ammonium Nitrate Manufacturing (AN, LoDAN
& HiDAN)
 Biodiesel Blending
 Boiler/Steam Generating System
 Boric Acid Production
 Building Construction & Utility Systems
 Catalytic Reformer Units
 Chemical Vapor Deposition (CVD) Systems
 Chlorination/Water Treating Systems
 Coker Units
 Cooling Tower Systems
 Crude Oil Pipeline/Rail Transfer Operations
 Crude Units
 Dehydration Processes
 Delayed Coking Units
 Diesel Emissions Fluid (DEF) Production
 Diesel Hydrotreating Units
 Distributed Control Systems (DCS)
 Effluent Water Treatment Unit/
Water/Oil/Solids Separation
 Emulsion and Fuel Blending Operations
 Ethylene Units
 Ethylene Purification & Piping Feed Systems
 Firewater/Plant Water Systems
 Flare Systems
 Fluid Catalytic Cracking (FCC) Units
 Foam Rubber Manufacturing
 FPSO Topsides Systems
 FPSO Vessel Operations
 Gas Plants
 HF Acid Handling and Storage
 Hydrotreater & Hydrocracker
Units
 Jet Treater (Merox) Units
 Laboratory Systems and
Equipment
 LACT/Metering/Prover Skids
 Landfill Gas (LFG) Conversion
Processes
 Light Ends Recovery Units
 LNG / LPG Production
 Lube Plants
 Marine / Wharf Operations
 Nitric Acid Plants
 Nitrogen Removal Units
 NOx Abatement Systems
 Oil & Gas Production Facilities
(Offshore and Onshore)
 Personal Products
Manufacturing Processes
 Pharmaceutical Processes
 Pipeline Stations / Systems
 Polymer and Resin
Manufacturing
 Polypropylene Synthesis
 Polypropylene Extrusion and
Loadout Systems
 Power Generation Systems
 Process Water Treatment
Systems
 Railcar Operations
 Rare Earths Processing
 Reformer Units
 Saturated Gas Units
 Ship / Tanker / Docks / Wharf
Operations
 Silicon Rod Manufacturing
 Sour Water Strippers
 Sulfonation Process
 Tankage/Product
Pumps/Pipeline Operations
 Thermal Oxidizer Systems
 Urea Production
 Wastewater Treatment
 Well Drilling Operations
 Well Workover Operations
Process Risk, LLC
Corporate Headquarters
25 Andrew Drive
Lawrenceville, NJ 08648
Tel: (609) ) 610-7232
Fax: (609) 482-4830
Regional Offices
 Pleasant Hill, CA
 Boston, MA
 Dover, DE
 Orchard Park, NY
www.ProcessHazardAnalysis.com www.Process-Risk.com