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NOTE: This is an unformatted excerpt from our online fire protection training library.

Identifying Materials & Equipment

Combustible Dusts

Group F

Definition of Group F:
Atmospheres containing combustible carbonaceous dusts that have more than 8 percent total entrapped volatiles (see ASTM D 3175-89, Standard Test Method for Volatile Material in the Analysis Sample for Coal and Coke, for coal and coke dusts) or that have been sensitized by other materials so that they present an explosion hazard. Coal, carbon black, charcoal, and coke dusts are examples of carbonaceous dusts Some dusts from petroleum products or raw materials such as oil shale and petroleum pitch are also Group F materials..
NOTE: This is an unformatted excerpt from our online fire protection training library.

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