Protection Against Dust Explosion using Flameless Venting

The dangers of industrial explosions have been known for hundreds of years. Many industries handle substances that pose a dust explosion risk and there are legal requirements for precautions and safeguards to protect personnel and plant. 

Explosion protection techniques seek to minimize or eliminate the occurrence of explosions, whereas explosion protection techniques control the effects of explosions in such a way that the damage that can be caused by explosions is minimized or eliminated. If you want to install explosion protection equipment, visit

Explosion protection techniques include containment, explosive ventilation, flameless ventilation, isolation, and suppression.

A new option – flameless ventilation – has recently been developed for dust explosions and is actively being marketed as an alternative to ventilation ducts. The fireless ventilation device combines explosion and fire suppression techniques. A fireless ventilation device usually consists of a vent panel, flanged housing, and a flame arrestor element.

The general principle is that at the initial stage of the explosion, the explosion vent cover opens, burning and unburned dust and fire enter the refractory element. The spread of fire outside the device is prevented by the dissipation of energy (heat) within the element, which lowers the burning fuel below its ignition temperature.

Advantages of flameless venting are flame extinguishment, dust retention, elimination of the need for explosion vent ducts, and minimization of the vent relief area requirements for indoor venting.