Dear all,

I am presently working on flare system analysis. In this system Cold flare line of 4" coming from the equipment is connected to the header of 10".

Here we have a transition temperature of -90 deg and the operating temperature is ambient. While the header is of 180 deg. in operating condition and there is no trasition temerature indicated in the line list for this header.

Now my question is do we need to consider the same transition parameters of the branch(4") to the header(10") when the system is in transient case.

Thanks & Regards
Nikhil