The consequences of both gas and dust explosions
will depend upon the environment in which the mixture
(dust or gas cloud) is contained or, in the case of the
gas cloud, what it engulfs. A gas explosion will be classifi
ed in relation to the environment in which the explosion
takes place, for example confi ned gas explosions
which occur within vessels, pipes, tunnels or channels,
or unconfi ned gas explosions commonly referred to as
unconfi ned vapour cloud explosions, which occur in
process plants and other unconfi ned areas.