Flameless venting of dust explosion: Testing and modeling

Dust Explosion Venting in Silos: a Comparison of Standards NFPA 68 and EN 14491

Venting devices are commonly used to try to reduce the damage caused by any dust explosion that may occur in silo systems. In North America and Europe the sizing of these vent areas is governed by standards NFPA 68 and EN 14491 respectively, both of which have recently come into force. The aim of the present work was to compare these standards in terms of the cost of protecting against dust exp...

Explosion dust particle size measurements.

In situ measurements of the sizes and concentrations of dust particles generated by the detonation of high explosives in clay soil near Leesville, La., sandy clay soil near Huntsville, Ala., and sandy soils near Orogrande, N.M. are reported. Measurements were generally made within 1 m of the surface (in one case 10 m) at distances ranging from 10 to approximately 50 m from the detonation point ...

Dust Explosion Propagation: Myths and Realities

Parallel Integrity Testing of Small Venting Filters

Introduction Sterilizing grade venting filters are used to avoid the potential risk of airborne germs contaminating containers like fermentors or cell-culture vessels. Sterilizing grade filtration can only be guaranteed when the filters used are tested for integrity. Therefore , such filters are routinely tested by the bubble point or similar tests. Depending on the program settings and the act...

Overall characterization of cork dust explosion.

Explosibility and ignitability studies of air/cork dust mixtures were conducted in a near-spherical 22.7 L explosibility test chamber using pyrotechnic ignitors and in a furnace of 1.23 L. The suspension dust burned as air-dispersed dust clouds and the uniformity of the dispersion inside the chamber was evaluated through optical dust probes. The range of tested particle sizes went from a mass m...