18.5.1 When carrying cargoes
at low temperatures:
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.1 if provided, the heating arrangements associated
with cargo containment systems should be operated in such a manner as to ensure
that the temperature does not fall below that for which the material of the hull
structure is designed;
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.2 loading should be carried out in such a manner as
to ensure that unsatisfactory temperature gradients do not occur in any cargo
tank, piping, or other ancillary equipment; and
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.3 when cooling down tanks from temperatures at or
near ambient, the cool-down procedure laid down for that particular tank, piping
and ancillary equipment should be followed closely.