scope:

This European Technical Report applies to bucket elevators thatmay handle combustible products capable of producing potentiallyexplosive atmospheres of dust or powder inside the bucket elevatorduring its operation. The precautions to control ignition sourceswill also be relevant where the product in the bucket elevatorcreates a fire risk but not an explosion risk. For the purposes ofthis report, a bucket elevator is defined as an item of bulkmaterial handling equipment that carries material in powder form oras coarse products such as whole grain, wood chips or flakes, in avertical direction by means of a continuous movement of opencontainers. This Technical Report specifies the principles of andguidance for fire and explosion prevention and explosion protectionfor bucket elevators. Prevention is based on the avoidance ofeffective ignition sources, either by the elimination of ignitionsources or the detection of ignition sources. Explosion protectionis based on the application of explosion venting, explosionsuppression or explosion containment and explosion isolation rulesspecifically adapted for bucket elevators. These specific rules maybe based on agreed test methods. This European Technical Reportdoes not apply to products that do not require atmospheric oxygenfor combustion.