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Dust Explosions – Sources of Dispersion and Ignition Not Independent

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From Eur Ing Keith Plumb | Pulse | LinkedIn




Corn Silo Topping - Junkin Media
Dust Explosions – Sources of Dispersion and Ignition Not IndependentPublished on August 18, 2017
Process and Equipment Consultant
In the November 2015 issue of the Chemical Engineer I wrote an article (https://www.integpharma.com/white-papers) about the fatal flaws associated Hazardous Area Classification.

In this article I wrote the following with respect to equipment selection.

“Also, the logic behind this selection is that the event that  causes a dust cloud to form is independent of the event that leads to an ignition source becoming active. This is probably true for electrical
equipment, less so for non-electrical equipment and could be completely  wrong for an electrostatic spark where the creation of the dust cloud  could also create the spark.”


The video at the link below shows a corn silo at White Farms Inc in Indiana, USA,toppling over and rupturing. This causes a large dust cloud …

Grain Bin Collapse with flashfire

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From Bryan Haywood SAFTENG


July 31, 2017 at approximately 1:00 pm. Switz City, Indiana. White Farms
Inc. Overhead tank collapsed full of corn. It hit a power line on the
way down and sparked the grain dust igniting the dust and causing the
flash. There were no injuries!




Bryan Haywood SAFTENG

Published on Jul 31, 2017