Flashing liquids escaping through holes and pipes require special consideration because
two-phase flow conditions may be present. Several special cases need consideration.17 If the
fluid path length of the release is short (through a hole in a thin-walled container), nonequilibrium
conditions exist, and the liquid does not have time to flash within the hole; the fluid
flashes external to the hole. The equations describing incompressible fluid flow through holes
apply (see section 4-2).