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

Thermal Hydraulics Testing and Analysis

Posted by The Fauske Team on 01.15.19
industrial Gas accumulator during a two-phase flow experiment.

Gas accumulator during a
two-phase flow experiment.

It is important to know how to  analytically model a system and related phenomena and then validate the analytical model with experimental data.  Fauske & Associates, LLC (FAI) has a long history of thermal hydraulic testing and analysis and state-of-the-art laboratories that can be used for full-scale industrial testing services of power plant components and systems. 

Many plant processes involve fluid flow combined with heat transfer. This can include phenomena such as phase change, condensation, two-phase fluid flow, critical flows, gas transport and more. Key large scale examples include nuclear plant integrated system transient and accident response, evaluation of containment and compartment conditions following pipe break events, waterhammer evaluation and severe accident analysis. Smaller scale examples include characterizing localized phenomena such as tank and sump vortex behavior, suction strainer performance, thermal mixing in piping and transient thermal response of cables to over-current conditions, to name a few.

FAI engineers regularly utilize RELAP5 (a code developed by Idaho National Labs) for thermal hydraulic safety analysis, including pre-test prediction and post-test evaluation. Major experience includes extensive piping dynamic loads evaluations for AP1000® systems as well as system evaluations on operating nuclear plants in the U.S. and overseas.

industrial testing services suppressing vortex formation
FAI’s VEXTORTM suppresses vortex formation, thereby improving the operation of fluid tanks and reservoirs under a wide range of conditions. By preventing swirl flows air intrusion and degraded pump operations will be minimized and even prevented.

FAI Thermal Hydraulics testing and analysis labs and engineers provide:

  • Experimental Investigative Operational Support
  • Acoustic Analysis
  • Air Intrusion
  • Containment Sump Performance
  • Two-Phase Critical Flow
  • Waterhammer and Related Hydrodynamics
  • High-Pressure Subcooled Jet Depressurization and Jet Impingement
  • One-Phase Plume and Jet Mixing Analysis
  • Fluid System-Specific Transient Analysis
  • Vortex Behavior
  • Emergency Response
Full scale industrial testing services of containment spray system conducted in one of FAI’s laboratories
Full scale testing of containment spray system conducted in one of FAI’s laboratories.


If you are interested in reading more about thermal hydraulics, check out our paper on waterhammer modeling in thermo-hydraulic systems below.

Waterhammer Modeling in Thermo-Hydraulic Systems

Topics: thermal hydraulics, waterhammer, testing


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