Factors that influence the explosiveness of wood dust, like particle size distribution, moisture content and microscopic structure, have been characterised. Sawdust flammability has tested in a Hartmann tube. The Minimum Explosive Concentration Ignition Temperature dust clouds layers also measured. Dust granulometry linked to regularity its structure are essential parameters generate or not an ...

Flameless venting is a sort of dual mitigation technique allowing, in principle, to vent process vessel inside building where people are working without transmitting flame outside the protected vessel. Existing devices an assembly panel and metal filter so that exploding cloud front forced go through filter. Within frame ATEX Directive, those systems need be certified. To do standard (NF EN 160...

For any type of combustible dust, several important explosive parameters must be taken into account when designing and using protection systems: namely the ease with which dust clouds ignite their burning rate, maximum explosion pressure, pressure rise speed. explosion. The accuracy results obtained necessary for design use systems depends on a number factors but also application test method (s...

Grain dust explosions at elevators are in reality a series of explosions. The first explosion referred to as the "primary explosion" is usually small with pressures less than 2 pounds per square inch, (psi). It propagates a pressure wave and fire front. The pressure wave moves away from the location of the primary explosion at a speed of about 1000 feet per second (fps) while the fire front fol...