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

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

Fauske Emergency Relief System Tool - FERST Software

Fauske & Associates (FAI) has updated our DIERS emergency relief sizing tools with FERST software powered by CHEMCAD.  FERST is a complete package that merges practical and easy-to-use methods, from our PrEVentTM (Practical Emergency Vent Sizing) software, with the material property, thermodynamics, and software development expertise of ChemstationsTM.  FERST also enables the direct use of measured temperature rise rates from low Φ-factor adiabatic calorimetry (e.g., the VSP2 and ARSST) for dynamic simulation, similar to our legacy VSDS (Vent Sizing Dynamic Simulation) software.

Easy to use software which sets the standard for safety and relief calculations

FERST powered by CHEMCAD makes designing or evaluating relief systems simple and more rigorous while incorporating all the latest methodologies and applicable standards. Key FERST software features include:
Choose from the Comprehensive List of the Latest Methodologies
  • System Types: Vapor (tempered), Gassy (non‑tempered), Hybrid (tempered with gas generation), and Non-reactive fire exposure systems (API 520/521, API 2000, OSHA 1910.106, NFPA 30)
  • Design Methodologies: Leung-Omega (with the option for ISO 4126-10 omega parameter determination), Fauske Vapor/Gas, and General Screening Equations
  • Flow Regime Options: Bubbly, Churn Turbulent, Homogeneous, Vapor Only, Liquid Only
Design New Relief Systems
  • Enter information on the vessel, contents, and upset scenario
  • Calculates the required size of relief device (rupture disk or pressure relief valve), and provides the allowable pressure losses through the inlet and/or outlet relief piping to ensure proper operation
Evaluate Existing Relief Systems - Statically
  • Enter information on the installed relief device and relief piping and choose an upset scenario
  • Maximum pressure and temperature the vessel would experience will be calculated
  • Determine if the installed relief device will adequately protect the vessel for the upset scenario
Evaluate and Model Existing Relief Systems - Dynamically
  • Model the relief event dynamically, using vessels and pipes on a flowsheet
  • Simulate the change in vessel contents, physical properties, and system pressure over time
  • Multiple options for source terms: specified temperature and/or pressure rise rates, low Φ-factor adiabatic calorimetry, zero-order kinetics (Coming soon), non-reactive fire exposure
  • Model a single vessel, or multiple vessels venting simultaneously. Evaluate relief lines and headers shared by vessels to ensure they are sized adequately
Numerous Options for Material Property Evaluation
  • Calculate pure chemical properties using DIPPR database with over 2500 chemicals
  • Calculate liquid and vapor properties of mixtures
  • Rigorously calculate Vapor-Liquid equilibria of a mixture - 40 different thermodynamic models
  • Create new chemicals in a user database
  • Predict properties for new chemicals or regress experimental data
User-friendly GUI & Technical Support from Industry Experts
  • Customizable ribbon interface for easy operation
  • Drag and drop flowsheet graphics 
Technical Support from Industry Experts
FERST -Staged Approach-4-22-1

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FERST Resources