Combustible Dust Testing

Laboratory testing to quantify dust explosion & 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

UN-DOT

Classification of hazardous materials subject to shipping and storage regulations

Safety Data Sheets

Develop critical safety data for inclusion in SDS documents

Biological

Model transport of airborne virus aerosols to guide safe operations and ventilation upgrades

Radioactive

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 (DSC/ARC supplies, CPA, C80, Super Stirrer)

Products and equipment for the process safety or process development laboratory

FERST

Software for emergency relief system design to ensure safe processing of reactive chemicals, including consideration of two-phase flow and runaway chemical reactions

FATE

Facility modeling software mechanistically tracks transport of heat, gasses, vapors, and aerosols for safety analysis of multi-room facilities

Blog

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Process Safety Newsletter

Stay informed with our quarterly Process Safety Newsletters sharing topical articles and practical advice.

Resources

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Recent Posts

FAQ’s of Hazardous Dust Testing (DHA)

Posted by Rachelle Andreasen on 03.08.18

By Rachelle Andreasen, Dust Project Manager, Fauske & Associates, LLC

A state of the art dust testing lab will frequently receive a number of questions from a variety of industries. Combustible or hazardous dusts exist in most industries including pharmaceuticals, food, cosmetics, metals, papers/pulp, petrochemical, agricultural, manufacturing, wood, plastics/polymers... 

Many plant managers or facility safety experts are not sure where to start when it comes to possible hazardous dusts.  Some aren't sure if there are enough dusts to warrant a collector? Some see dusts and don't know if that "tiny" bit is hazardous or combustible? Some know they need a dust collector, but what kind?  If there's an existing collector, is it efficient?  How often should it be checked?   

Here are a few other questions we frequently answer and a video below that shows you how to collect a combustible dust sample.   

Q: Where is the best place to collect material for testing?

A: Typically, the finest and driest material present within the facility presents the greatest hazard.  With this being said, it is recommended that the material be collected from the dust collector filter, elevated surfaces within the facility, or the dust collector bin.  If finer material cannot be collected, and you know that finer material may be generated in the process, it is recommended that you request particle size reduction prior to testing. 

Q: Can I use historical data to design my dust collector?

A: No, it is not recommended to use historical/literature values to design a dust collector or to size explosion protection.  Historical values are a good reference to identify if your material has a trend of being explosible and/or combustible, but there are so many other factors that play a role in ensuring your specific facility has data that truly represents the material within your process.  It is important to consider the characteristics such as particle size distribution, particle morphology, and moisture content.

Q: How much material do I need to submit for the Explosion Severity test?

A: Typically we recommend that at minimum of 500 g (1 lb) is submitted for the Kst test; however, depending on the density of your material more material may be needed.  It is also recommended that additional material be sent if particle size reduction is requested.

Q: How long does it take to get results?

A: Explosion Severity (Kst) testing is one of the most labor intensive dust testing services we offer.  Depending on how the sample behaves during testing, a typical Kst test can take anywhere from 4 to 6 hours.  However, depending on the nature of the material and the clean-up involved, testing may take longer.  For example, if the material being tested generates hazardous decomposition products, additional safety procedures are followed.  

Hazardous dust /or combustible dust hazard analysis (DHA) is a painless but important step in plant management and facility safety. There are no dumb questions.  Whether meeting new OSHA, NFPA or NEP standards or just taking precautionary steps, get your dust tested.  See our helpful videos on dust collection or specific tests such as MIE, MIT and LIT, Go/No Go Testing and more. 

Watch this video to learn how to collect a combustible dust sample. 

 

 

FAI

Topics: Combustible dust, dust hazard, DHA

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