Combustible Dust Testing

Laboratory testing to quantify dust explosion and reactivity hazards

Safety Data Sheets

Develop critical safety data for inclusion in SDS documents

Gas and Vapor

Laboratory testing to quantify explosion hazards for vapor and gas mixtures

Classification of hazardous materials subject to shipping and storage regulations
Testing and consulting on the explosion risks associated with devices and processes which use or produce hydrogen
Safety Data Sheets

Develop critical safety data for inclusion in SDS documents

Thermal Stability

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

Adiabatic Calorimetry
Data demonstrate the consequences of process upsets, such as failed equipment or improper procedures, and guide mitigation strategies including Emergency Relief System (ERS) design
Reaction Calorimetry
Data yield heat and gas removal requirements to control the desired process chemistry
Battery Safety

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

Safety Data Sheets

Develop critical safety data for inclusion in SDS documents

Cable Testing
Evaluate electrical cables to demonstrate reliability and identify defects or degradation
Equipment Qualification (EQ)
Testing and analysis to ensure that critical equipment will operate under adverse environmental conditions
Water Hammer
Analysis and testing to identify and prevent unwanted hydraulic pressure transients in process piping
Acoustic Vibration
Identify and eliminate potential sources of unwanted vibration in piping and structural systems
Gas & Air Intrusion
Analysis and testing to identify and prevent intrusion of gas or air in piping systems
ISO/IEC 17025:2017

Fauske & Associates fulfills the requirements of ISO/IEC 17025:2017 in the field of Testing

ISO 9001:2015
Fauske & Associates fulfills the requirements of ISO 9001:2015
Dust Hazards Analysis
Evaluate your process to identify combustible dust hazards and perform dust explosion testing
On-Site Risk Management
On-site safety studies can help identify explosibility and chemical reaction hazards so that appropriate testing, simulations, or calculations are identified to support safe scale up
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 safely handle the effluent discharge from an overpressure event

FATE™ & Facility Modeling

FATE (Facility Flow, Aerosol, Thermal, and Explosion) is a flexible, fast-running code developed and maintained by Fauske and Associates under an ASME NQA-1 compliant QA program.

Mechanical, Piping, and Electrical
Engineering and testing to support safe plant operations and develop solutions to problems in heat transfer, fluid, flow, and electric power systems
Hydrogen Safety
Testing and consulting on the explosion risks associated with devices and processes which use or produce hydrogen
Thermal Hydraulics
Testing and analysis to ensure that critical equipment will operate under adverse environmental conditions
Nuclear Safety
Our Nuclear Services Group is recognized for comprehensive evaluations to help commercial nuclear power plants operate efficiently and stay compliant
Radioactive Waste
Safety analysis to underpin decomissioning process at facilities which have produced or used radioactive nuclear materials
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.

Recent Posts

Revisiting DIERS' Two-Phase Methodology for Reactive Systems

Posted by Fauske & Associates on 04.14.15

In connection with celebrating the 35th anniversary of the company, it seems appropriate to revisit the DIERS research project completed in 1985 under my leadership. As a follow-up in response to frequent suggestions by the industry that the DIERS methodology can be too complex and time-consuming, and overly conservative in many cases leading to impractical relief system designs, we have devoted time over the years to develop more "easy-to-use" adiabatic calorimetry and relief vent sizing equations demonstrating very good agreement with all available experimental data including vapor, gassy, and hybrid systems and plant experience (remember without data all you have is an opinion). At this time, I am very pleased to report that the frequent industry concerns have been properly addressed. 

As such, the "easy-to-use" methods provide alternatives to methods dependent upon sophisticated computer algorithms such as SAFIRE, and others, and can be properly viewed as the key practical component of the current DIERS vent sizing methods. It should also be noted, that the "easy-to-use" methods can serve well as an independent check on accuracy of the more complex algorithmic methods.

The "easy-to-use" methods provide:
  • Verified relief sizing equation(s) applicable to vapor, gassy and hybrid runaway reaction systems
  • Verified two-phase flow equations including flows through PSV
  • Accounting for flow regime variations such as churn turbulent, bubbly and viscous
  • No need for physical properties, which in many cases are not readily available
  • Illustrate the large advantages of setting the relief activation pressure as low as practical (less than MAWP), and
  • Elimination of oversizing which is essential in assuring stable PSV operation

To learn more about the "easy-to-use" DIERS adiabatic calorimetry vent sizing methods, join us at the forthcoming relief system design seminars.


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For more information, contact AnnMarie Fauske at 630-887-5213

Topics: Combustible Dust, Process Safety, Process Safety Newsletters


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