Common industrial processes have the potential for a dust explosion. Where combustible material is conveyed, filtered, heated, milled, or sprayed in a fine powdered form, the three elements of the ‘explosion triangle’ can combine dust + air + ignition. When these occur in a confined and unprotected process volume with the dust dispersed, a deflagration can trigger resulting in an immediate overpressure and flame ball.
An explosion risk assessment will typically recommend that a series of protection measures be implemented ranging from improvements in housekeeping to investment in protection equipment. Applying protection technology requires that the constraints of the process equipment, building facilities, environment, and budgets are taken into account in achieving the level of personnel safety required by codes and standards.
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