We are working on a brownfield job where we had to look into the Caesar II calculation done few years back. Calculation incolving flare line from the knockout drum. The caesar II Default ROT Restraint Stiffness in configuration set up has been used as 0.112980E+07 N.mm/deg. Caesar II 4.50 version has been used for the analysis. Please advice us on the default value. Also let us know if the above deviation from the default value is acceptable.

Vijay

Default stifness is 1E12. Yours is a very low value but could well be representative of the shell stiffness of a very thin wall, large diameter vessel such as a KO drum.

It is wierd to set up the configuration file this way, since it will then be used generally. If it's for a single nozzle then it should be on that restraint data point.

I suggest that you return to the default config file.

M/Z is correct. Your rotational stiffness is very low. No harm done if your rotations are also very low. Rotation will indicate the significance of this input value.