Hazards Analysis, Code Compliance & Procedure Development

Services to identify process safety hazards and facilitate compliance with established standards and codes.

Combustible Dust Testing

Laboratory testing to quantify dust explosion and reactivity hazards

Flammable Gas & Vapor Testing

Laboratory testing to quantify explosion hazards for vapor and gas mixtures

Chemical Reactivity Testing

Laboratory testing to quantify reactive chemical hazards, including the possibility of material incompatibility, instability, and runaway chemical reactions

DIERS Methodology

Design emergency pressure relief systems to mitigate the consequences of unwanted chemical reactivity and account for two-phase flow using the right tools and methods

Deflagrations (Dust/Vapor/Gas)

Properly size pressure relief vents to protect your processes from dust, vapor, and gas explosions

Effluent Handling

Pressure relief sizing is just the first step and it is critical to safety handle the effluent discharge from an overpressure event

Thermal Stability

Safe storage or processing requires an understanding of the possible hazards associated with sensitivity to variations in temperature


Classification of hazardous materials subject to shipping and storage regulations

Safety Data Sheets

Develop critical safety data for inclusion in SDS documents


Model transport of airborne virus aerosols to guide safe operations and ventilation upgrades


Model transport of contamination for source term and leak path factor analysis

Fire Analysis

Model transport of heat and smoke for fire analysis

Flammable or Toxic Gas

transport of flammable or toxic gas during a process upset

OSS consulting, adiabatic & reaction calorimetry and consulting

Onsite safety studies can help identify explosibility and chemical reaction hazards so that appropriate testing, simulations, or calculations are identified to support safe scale up

Mechanical, Piping, and Electrical

Engineering and testing to support safe plant operations and develop solutions to problems in heat transfer, fluid flow, electric power systems

Battery Safety

Testing to support safe design of batteries and electrical power backup facilities particularly to satisfy UL9540a ed.4

Hydrogen Safety

Testing and consulting on the explosion risks associated with devices and processes which use or produce hydrogen

Spent Fuel

Safety analysis for packaging, transport, and storage of spent nuclear fuel

Decommissioning, Decontamination and Remediation (DD&R)

Safety analysis to underpin decommissioning process at facilities which have produced or used radioactive nuclear materials

Laboratory Testing & Software Capabilities

Bespoke testing and modeling services to validate analysis of DD&R processes

Nuclear Overview

Our Nuclear Services Group is recognized for comprehensive evaluations to help commercial nuclear power plants operate efficiently and stay compliant.

Severe Accident Analysis and Risk Assessment

Expert analysis of possible risk and consequences from nuclear plant accidents

Thermal Hydraulics

Testing and analysis to ensure that critical equipment will operate under adverse environmental conditions

Environmental Qualification (EQ) and Equipment Survivability (ES)

Testing and analysis to ensure that critical equipment will operate under adverse environmental conditions

Laboratory Testing & Software Capabilities

Testing and modeling services to support resolution of emergent safety issues at a power plant

Adiabatic Safety Calorimeters (ARSST and VSP2)

Low thermal inertial adiabatic calorimeters specially designed to provide directly scalable data that are critical to safe process design

Other Lab Equipment and Parts for the DSC/ARC/ARSST/VSP2 Calorimeters

Products and equipment for the process safety or process development laboratory


Software for emergency relief system design to ensure safe processing of reactive chemicals, including consideration of two-phase flow and runaway chemical reactions


Facility modeling software mechanistically tracks transport of heat, gasses, vapors, and aerosols for safety analysis of multi-room facilities


Our highly experienced team keeps you up-to-date on the latest process safety developments.

Process Safety Newsletter

Stay informed with our quarterly Process Safety Newsletters sharing topical articles and practical advice.


With over 40 years of industry expertise, we have a wealth of process safety knowledge to share.

Process Safety Innovation for 40+ years

Our Story

Our legacy of leadership in process safety goes back to 1980 when Fauske & Associates, Inc. (FAI) was founded by Dr. Hans Fauske, Dr. Michael Grolmes, and Dr. Robert Henry.  In 1986 FAI aka "Fauske" became a wholly owned subsidiary of Westinghouse Electric Company, LLC, and is now a Division of Stone & Webster, LLC, a wholly owned subsidiary of Westinghouse Electric Company LLC.

FAI immediately became an innovative leader in improving process safety. providing expert technical guidance to the AIChE DIERS program for the chemical industry and the IDCOR degraded core program for the nuclear power industry. Our efforts led to innovative methodologies and tools to characterize reactive chemical hazards, design emergency relief systems,  and simulate severe accidents in commercial nuclear power plants. FAI is recognized worldwide for phenomenological modeling, testing, and consulting services to prevent or mitigate accidents at chemical and nuclear facilities.

Our goal is to collaborate with our customers to ensure the safety and reliability of their chemical processes, industrial facilities, and power plants while maintaining regulatory compliance, extending plant life and reducing operation and maintenance costs.

Our Leaders


Our History & Milestones


FAI has mature and regularly audited Quality Programs that comply with 10CFR50 Appendix B and Part 21, ISO-17025, as well as ISO-9001 for all engineering services, testing services, and related software development. Quality is built into each project we perform.

Interested in talking to someone?


Worldwide Network of Partners & Representatives


We support clients around the world. Let us help you.


Dr. Jim Burelbach
Chief Commercial Officer &
Business Development Leader

16w070 83rd Street
Burr Ridge, IL 60527

Phone: 630-887-5221

Email: burelbach@fauske.com


Mark Yukich
Customer Service & Business Development Director

16w070 83rd Street
Burr Ridge, IL 60527

Phone: 630-321-4788

Email: yukich@fauske.com
Website: www.fauske.com


Zach Hachmeister

16w070 83rd Street
Burr Ridge, IL 60527

Phone: 630-887-5246

Email: hachmeister@fauske.com
Website: www.fauske.com