Membrane tank system design.

A membrane tank system must be designed for: (a) Any static and dynamic loads with respect to plastic deformation and fatigue; (b) Combined strains from static, dynamic, and thermal loads; (c) Preventing collapse of the membrane from: (1) Over-pressure in the interbarrier space; (2) Vacuum in the cargo tank; (3) Sloshing in a partially filled cargo tank; and (4) Hull vibrations; and (d) The deflections of the vessel's hull.