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.

Recent Posts

Fauske Introduces Emergency Relief System Tool (FERST) Software

Posted by The Fauske Team on 10.30.19

By Technical Lead Benjamin C. Doup, PhD and Chief Technology Officer Ken Kurko

FERST-logoFauske & Associates, LLC (FAI) has updated its emergency relief sizing tools with FERST software powered by CHEMCAD. FERST is the complete package combining the practical and easy-to-use interface and calculation methods from FAI’s PrEVentTM (Practical Emergency Vent Sizing) software, the direct use of temperature rise rates from low Φ-factor calorimetry data from FAI’s VSDS (Vent Sizing Dynamic Simulation) software and the material property, thermodynamic, and software development expertise from ChemstationsTM.



Interested in learning more?

Book a Demo

Benefits Provided by FERST Powered by CHEMCAD:

Benchmarking Vapor Vent Design
GUI functionality improvements

- File handling
- Report of results
- Customizable plotting capability
- Flow sheet schematic for dynamic simulations 
  + Allows the user to visualize connections between vessels and piping

Access to Chemstations technical support
- FAI will provide 2nd level support

Materials properties
- Maintain the ability to use user-specified material properties
- Each license comes with a license to the DIPPR database
- Access to pure component properties for 2557 components
- 40 different thermodynamic models
- Rigorous mixing models give bulk properties of mixtures


Typical-CHEMCAD flow sheet using vessels pipes and nodes

Design relief systems
- Leung-Omega and Fauske all-vapor/gas methods for:
  + Vapor (tempered) systems
  + Gassy (non-tempered) systems
  + Hybrid (tempered with gas generation) systems
  + Non-reactive fire exposure systems
- Built in sanity check using the Fauske screening method
  + Only need to input kinetic data correctly to perform an accurate check
- Leung-Omega method improvements
  + Omega definition options include:
    - Leung’s most recent definition
    - ISO 4126-10
    - CHEMCAD flash calculation
  + A single set of equations for vapor, hybrid, and gassy system mass flux calculations
  + Ability to calculate flow for all-liquid subcooled flow
- Fauske all-vapor/gas method improvements
  + Ability to modify the isentropic coefficient for mass flux calculations


Benchmarking Adai & Fisher

Rate relief systems using a static approach
- Input vent area and calculate the expected peak pressure
- Leung-Omega method for:
  + Vapor (tempered) systems
  + Gassy (non-tempered) systems
  + Hybrid (tempered with gas generation) systems
  + Non-reactive fire exposure systems
- Pipe pressure loss evaluations for:
  + Inlet and outlet piping of relief valve and a single relief line

Rate relief systems using a dynamic approach
- Build typical CHEMCAD flow sheet using vessels, pipes, and nodes
- Model change in material properties as function of venting time
- Source terms
 + Read in low Φ-factor adiabatic calorimetry
 + Zero-order kinetics
 + Non-reactive fire exposure
- Model multiple vessels venting simultaneously
- Pipe pressure loss evaluations for:
 + Inlet and outlet piping of relief valve, relief lines and headers

FERST Powered by CHEMCAD - A Staged Approach to ERS Design

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Topics: vent sizing, calorimetry, emergency relief vent, PREvent, adiabatic calorimeter


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