Hi too stressguy,
In which part have mentioned it???
If you follow WRC107 rules in CAESAR II modelling the nozzle vector should pointed to vessel centerline axes, in this case (vertical nozzle on vessel head) should be modeled as horizontal modeled???? how can you do that?
For me its more safer to use FEA software to get the flexibility and SIF and input it back to CAESAR II.
COADE has write this in their mechanical Engineering News August 1992.
So Richard or Dave, what is your comment?