Dear Experts,
I am working with vessel i nter connection piping system, line design temperature is 121 0C and line size is 20 inch, we have done the detailed stress analysis and the nozzle junction is considered anchor with Cnode option, the piping load on the equipment nozzle is higher than the allowable. Here the pipe routing changes is not possible since it is process requirement, However we have performed the nozzle pro analysis (FEA) for excessive nozzle loads and found the stress are not with in the allowable limit.
Also we have attached the snap shot for the failure nozzle.

In FEA analysis we found the following stiffness data.

1. Axial Translational Stiffness = 631487. N /mm.
2. Inplane Rotational Stiffness = 4212978432. mm. N /deg
3. Outplane Rotational Stiffness = 1448742400. mm. N /deg
4. Torsional Rotational Stiffness = 236483166208. mm. N /deg

Kindly advise how we can correlate these stiffness in CAESAR II model to reduce the piping load on the equipment nozzle.