Dusts
Dusts can be produced from many everyday and workplace
materials such as wood, coal, grain, sugar, synthetic
organic chemicals and certain metals. A cloud
of combustible dust in the air can explode violently
if ignited. Explosions and explosive materials are discussed
later in this chapter.
As with the fl ammable vapours given off by fl ammable
liquids not only do gases present a signifi cant risk of
fi re they also present an explosion risk.
Gases do not always come in containers and can be
produced by chemical reactions such as the degradation
of waste materials within a refuse dump which produces
methane.