10.4.1 Where the
transport
or
handling
of solid
bulk dangerous cargoes
may
give rise to the emission of a toxic or flammable vapour, all necessary
practicable precautions should be taken to prevent and minimize the
emission of such vapours and to protect persons from toxic vapours.
10.4.2 Whenever solid
bulk dangerous
cargo
which may emit a toxic or flammable vapour is
stowed or carried, an appropriate instrument for measuring the concentration
of the toxic or flammable vapour should be provided. Enclosed spaces
used for such cargoes and adjacent spaces should be provided with
effective ventilation.
10.4.3 Except in an emergency, no person should
enter an enclosed space in which a solid
bulk dangerous
cargo
that may emit a toxic or flammable vapour is stowed
or is deficient in oxygen unless the atmosphere in the space has been
determined not to be hazardous to human health or safety. If entry
is necessary during an emergency, a person who enters the space should
wear appropriate self-contained air breathing apparatus in accordance
with confined space entry procedures (see 7.2.11.2).