Dear All

I am first time doing analysis on furnace.

If we analyze the nozzle moment and forces of a fired heater using API560, should we also model the tubing inside the fired heater?

In the API560 analysis window, we are required to input
(a) tube axial force,
(b) tube horizontal shear force,
(c) tube vertical shear force,
(d) tube torsional moment,
(e) tube horizontal moment,
(f) tube vertical moment

Is this mean we need to model the tubing so that we can get these values?

Anyone have examples to refer to?

Thank you
Loh