How do I know if my dust is combustible?
The starting point for evaluating combustible dust hazards in your facility is understanding the risks of your specific dust. Variations in moisture content, particle size, particle shape, or composition can affect the explosiveness of a dust in significant ways. Therefore, both OSHA and NFPA have set forth guidance that all materials that may be considered combustible should be tested in order to clearly identify and assess the hazard.
Our experts can assist you in determining what samples to test and what tests should be conducted. Once testing is completed, a formal report is generated and our experts can help with analyzing the data.
The tests below are most commonly used to fully characterize the risks associated with your dust and can be grouped as shown below:
Will the dust cloud ignite?
Combustibility (Go / No-Go) Screening - Initial screening to determine whether a dust will ignite. Uses a dust cloud dispersed around a strong ignition source.
How strong is the dust explosion?
Dust Explosion Severity (Kst & Pmax) - Useful for determining parameters which are the basis of design for mitigation strategies such as deflagration venting and suppression
- ASTME 1226 – 2010 - Determines values necessary for designing protective measures, such as deflagration venting
- EN14034 - Part 1:2004 - Determination of the Maximum Explosion Pressure (Pmax) of Dust Clouds – Part 2:2006 - Determination of the Maximum Rate of Explosion Pressure Rise (dP/dtMax ) of Dust Clouds
- For more information about Kst and Pmax see our Dust Explosion section.