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 Accreditation and Scope

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

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


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

Model transport of flammable or toxic gas during a process upset

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

Containment Spray Nozzle Testing

Posted by The Fauske Team on 07.09.19

By John Lojek, PE, Principal Engineer, Analysis and Testing, Westinghouse Electric Company, LLC and Kevin Ramsden, Nuclear Services Chief Engineer, Fauske & Associates, LLC

HubSpot Video

At the top of the containment vessel of pressurized water reactors, hundreds of spray nozzles are positioned to provide a mechanism for cooling during a postulated event. Since operation of the containment spray system is not feasible during normal operations, confirmation of the flow path is typically performed using gas flow. At our test facility, we were able to replicate the flow rate of one of these spray nozzles.

This high-speed video shows a sudden inrush of water with debris to the nozzle and an eventual steady-state nozzle spray flow. The design of the nozzle allows for a droplet size and flow rate to adequately cool containment to prevent over pressurization. The flow rate is about equal to 14 gpm or 5 - 6x the flow rate of a standard shower head. In this experiment, upstream pressure transmitters and flow meters provided information relevant to match the design conditions. A custom developed National Instruments LabVIEW program was used to monitor and acquire data. After baselining the facility, sensitivity studies were conducted to determine adequate nozzle performance. Utilizing a significant foundation of debris transport design and testing experience, the performance of a single spray nozzle with different debris conditions of varying size distributions was investigated.

Fauske & Associates, LLC and Westinghouse have long histories 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. This is one example of a type of test that can be conducted.

Solving and testing complex fluid problems are part of unique full service lab and engineering service capability.

Contact Us


Topics: nuclear safety, pressurized water reactor, nuclear, industrial safety, Containment spray


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