Hi,
I have done pipe stress analysis on an offshore Flare line which is connected to an existing KO drum and we have got different scenarios such as Max Des/Min Design/wind/wave and Blast.
Nozzle is overloaded in Operating case and Blast.
we have decided to do a FEA analysis on the Nozzle with Abaqus.

the procedure which we have considered is that to model the Nozzle(connected to the equipment)and put the boundary conditions and calculate the von mises stresses on the nozzle.
then compare these stresses with the allowable stress of the Nozzle's Material in Operating Case and Yield Stress in Blast.
my question is if the procedure is good enough or shall we consider other methods based on ASME section VIII Div 2?