A large means of containment has a capacity greater than 450 litres. Placards
representing the various chemical hazards are placed on all four sides of large means of
containment or transport units. Placards can be used to represent both the primary and
the subsidiary class of the dangerous goods in transport.
Large means of containment can be:
tote tanks,
- intermodal tanks,
- portable tanks,
- intermediate bulk containers (IBC),
- freight containers,
- road and
- rail vehicles.