Dear All,

We have superheater module (header and coils) and from its outlet header end "Main Steam piping" starts. This pipe is connected at the end of the header. Meaning both header and pipe has same Diameter.

Pipe TP is considered at this interface and analysis carried out. This interface point is our first node.

1. My question is how can I ensure that forces and moments created by pipe will not cause problem to this header. We have no allowables.

2. Is there any means to calculate the allowable force and moments at the header end so that it could be checked against the forces and moments created by pipe..

I thought of including header in analysis however it cannot be as it consists of many coils connected to its nozzles which is connected at the header bottomside.

Could you please clarify with explanation.

My understanding about super heater is rolling of coil in pipe. Whether vendor has defined any allowable?

If you could send the super heater vendor drawings to my email: nvenkades@gmail.com, I can suggest some kind of analysis method from my end.

I hope this super heater will not come under API 560 & HEI standards.

Thanks
Venkadesh