Many solids processing companies have a serious potential for a dust explosion and may not even recognize the risks. If the dusts in your dust control system are combustible, you may be risking injury or damage from a dust explosion if those systems are not designed or operated in accordance with NFPA recommendations.
Combustible dust incidents resulting in fatalities can be avoided if available guidance such as NFPA 654 and other standards are followed.
To see what your risk might be, answer the following two questions. If you answer "yes" to these questions, your dust control system may be an explosion hazard.
1. Do you have combustible dusts?
If you don't know, read the "Combustible Dusts" section below.
2. Do you lack adequate conveying velocity in some or all branches of your dust control system?
Low velocity causes dust accumulation in the duct and the risk of fueling a dust explosion if ignited — a significant factor in several recent incidents. Typical dust control conveying velocities are in the range of 3,500 to 4,000 ft/min (17.5 to 20 m/sec).
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