When the design temperature is -110°C or lower, a complete
stress analysis, taking into account all the stresses due to weight
of pipes, including acceleration loads if significant, internal pressure,
thermal contraction and loads induced by hog and sag of the ship for
each branch of the piping system should be submitted to the Administration.
For temperatures of above -110°C, a stress analysis may be required
by the Administration in relation to such matters as the design or
stiffness of the piping system and the choice of materials. In any
case, consideration should be given to thermal stresses, even though
calculations are not submitted. The analysis may be carried out according
to a code of practice acceptable to the Administration.