4.2.1.1 Integral tanks form
a structural part of the ship's hull and are influenced in the same
manner and by the same loads which stress the adjacent hull structure.
4.2.1.2 The design vapour
pressure P
o as defined in 4.2.6 should not normally exceed 0.25 bar.
If, however, the hull scantlings are increased accordingly, P
o may be increased to a higher value but less than 0.7 bar.
4.2.1.3 Integral tanks may
be used for products provided the boiling point of the cargo is not
below -10°C. A lower temperature may be accepted by the Administration
subject to special consideration.