Subsea pressure vessel verification with 1.5x hydrostatic test pressure calculations ($P_{hydro} = 1.5 \times P_{design}$).
Calculates minimum shell and head wall thicknesses under ASME Sec VIII Div 1 formulas. Hydrostatic test pressure is automatically specified as $1.5 \times$ design pressure (e.g. 40 bar design pressure yields 60 bar hydrotest).