6.1 This section deals with the mixtures defined
in 3.1.3, i.e. those presenting a
safety hazard and containing at least 97% by weight of chemicals assessed
by IMO, one or more of which presents a safety hazard.
Chemicals assessed by IMO include:
Safety hazard only chemicals are designated by an S in column
d of the summary of minimum requirements table. These mixtures contain
components with safety hazards (designated by S or S/P in column d
of the summary of minimum requirements table) to such an extent that
they impart a safety hazard to the final mixture.
6.2 The pollution category of these mixtures is
calculated, as shown in 5.2, 5.3 and 5.4.
6.3 A tentative ship type, for pollution prevention
purposes only, is then calculated, as shown in 5.5.
6.4 The Administration should then provisionally
assess the safety hazards of the mixture and assign carriage requirements,
following the guidelines referred to in 4.9 and
the interpretation for assigning the minimum carriage requirements
for mixtures involving products included in the IBC/BCH Codes for
safety reasons, reproduced in annex 10.
If necessary, the Administration should revise the tentative ship
type assigned in 6.3.
6.5 The mixtures representing safety hazards,
cannot be shipped under "Noxious liquid, n.o.s." generic entries in
the code. Therefore an appropriate shipping name will need to be assigned
to the mixture. This will identify the principal substances responsible
for the safety and pollution (if applicable) hazards of the mixture
and may include its trade name.
6.6 The Administration should now proceed to obtain
a tripartite agreement and to inform IMO, as indicated in 4.11 and 4.12.
6.7 IMO shall review the ship type and carriage
requirements provisionally assigned by tripartite agreement and finally
include the mixture in the MEPC circular mentioned in 2.8. There is no need for IMO to review
the mixture's pollution category, as this is the result of a purely
6.8 The inclusion of these mixtures in the MEPC
circular constitutes an assessment by IMO, and hence removes the three-year
limitation on the provisional assessment by tripartite agreement.