We are doing analysis for API 650 Tank.

We have followed the follwoing method:

1. Calculate the stiffness (for radial force, longitudinal & circumferential moment) per API 650
2. Calculate the nozzle deflection & rotation due to pressure, product head and temperature per API 650
3. Input these values in CAESAR II and compare the nozzle load in nomographs.

Please comment if this the right procedure or something else has to be done.

Thanks,