Combustible Dust Testing

Laboratory testing to quantify dust explosion & reactivity hazards

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Laboratory testing to quantify explosion hazards for vapor and gas mixtures

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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

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Engineering and testing to support safe plant operations and develop solutions to problems in heat transfer, fluid flow, electric power systems

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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

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Safety analysis to underpin decommissioning process at facilities which have produced or used radioactive nuclear materials

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Testing and analysis to ensure that critical equipment will operate under adverse environmental conditions

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Testing and analysis to ensure that critical equipment will operate under adverse environmental conditions

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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

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Recent Posts

Dust Explosions: Test Methods - Published in 'Methods in Chemical Process Safety'

Posted by The Fauske Team on 09.19.19

Chemical Process Safety Methods Dust ExplosionsIn Paul Amyotte and Faisal Khan's newest, Vol. 3 Methods of Chemical Process Safety: Dust Explosions published by Elsevier Academic Press, Dr. Ashok Ghose Dastidar contributes "Dust Explosions: Test Methods".

Per the book's preface, "Dust explosions are an ever-present threat wherever bulk powders are handled in the chemical process and other industries. They can be prevented, and their consequences mitigated, only by adopting an approach based on the principles of process safety.

This book is the third volume of the Methods in Chemical Process Safety book series. The book series intends to be a one-stop resource for both academic researchers and professional practitioners. It aims to publish the fundamentals of process safety science and leading state-of-the-art advances occurring in the field, while maintaining a practical approach for their application to industry. An international editorial board and authorship ensures that the book series depicts the latest research developments from around the globe. Each volume covers fully commissioned methods across the fields of process safety, risk assessment and management, and loss prevention.

The third volume tackles the dust explosion problem in a sequential manner over nine chapters covering: (i) an overview of the general field and the book organization, (ii) scientific and engineering fundamentals, (iii) illustrative examples and case histories, (iv) testing methods for acquisition of explosibility data, (v) dust hazard analyses conducted to identify the hazards of combustible powders, (vi) assessment of the probabilistic and consequence impact aspects of dust explosion risk, (vii) typical safety measures for dust explosion risk reduction, (viii) global regulations, standards, and guidelines, and (ix) explosion risks presented by nontraditional fuels including hybrid mixtures of flammable gas and combustible dust, as well as dusts that are nonspherical in shape, nano-scale in size, or present in additive manufacturing processes."

m3 Chamber Test SetupDr. Ashok Ghose Dastidar, Vice President, Dust & Flammability Testing and Consulting Services, Fauske & Associates, LLC and Fellow Engineer, Westinghouse Electric Company provides Chapter Four - "Dust Explosions: Test Methods" for which he outlines:

  • Material identification
  • Sample identification and characterization
  • eactive as a cloud (deflagration)
  • Go/no go explosibility screening
  • Reactive as a pile or layer (combustion)
  • Burning behavior
  • Burn rate screening
  • Deflagration testing
  • Explosion severity (Pmax and KSt)
  • Minimum explosible concentration (MEC)
  • Minimum ignition energy (MIE)
  • Minimum autoignition temperature of a dust cloud (MIT)
  • Limiting oxygen concentration (LOC)
  • Combustion testing
  • Burn rate test
  • Layer ignition temperature (LIT)
  • Auto ignition screening (Grewer)
  • Hot storage screening
  • Exothermic decomposition screening
  • Smoldering gas evolution (L€utolf )
  • Concluding remarks

Illustrations and graphics depict the methodology and equipment used to determine deflagration characterization. How do you determine "Overdriving" vs. "Underdriving". What are the the "pot holes" of one test method over another? What differences do materials present in testing results? What combination of tests is best to mitigate design flaws?

These findings, together with other dust industry expert contributions such as dust explosions overview, fundamentals, serious concerns, hazard identification, risk assessment, safety measures, regulations, standards and guidelines and emerging or unique scenarios are all explored extensively in this important volume.

For more information and to purchase the book: https://www.elsevier.com/books/dust-explosions/amyotte/978-0-12-817550-7

If you are interested in learning whether or not your dust is combustible, use this flowchart to help you decide. 

Is My Dust Combustible?

 

 

 

Topics: Combustible dust, chemical

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Is My Dust Combustible?

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