Load Cases For Evaluation Of Nozzle Loads

Hi,

I have a simple question concerning the evaluation of equipment nozzle loads. I want to start discussion here about which load cases should someone who does pipe stress analysis prepare/build and then check when evaluating nozzle loads for equipment.
I am specifically interested in which superposition's of load cases we have to take into account when conducting the nozzle load check (e.g. dead load + occasional loads(earthquake or wind), operation + occasional loads(earthquake or wind), etc.)

Is it ok, to check individual loads on pump nozzle in such a way that you take highest load calculated for X direction among all the calculated load cases, then you look for highest load in Y direction the same way you did for X and then finally for Z direction (e.g. Xmax in load case dead load X + earthquake X, Ymax in load case operation Y + wind Y, Zmax operation Z + earthquake Z)

Or is there another approach for this evaluation of nozzle loads. Maybe it's not to mix values for individual loads from different load cases??