API TR 17TR12 pdf download Consideration of External Pressure in the Design and Pressure Rating of Subsea Equipment 1 Scope This technical report addresses issues related to the effects of external pressure acting on API Subcommittee 17(SC17, Subcommittee on Subsea Production Equipment) subsea equipment installed in deepwater for containing orcontrolling wellbore fluids.External pressure at deepwater can significantly reduce the differential...