Dear friends,

I am performing stress analysis and pipe supporting for some Flare and steam lines. I have some doubts regarding support and piping arrangements for long vertical lines for instance 7-10meters. Please find the attached file and give your advice in this regard.

In item 1 weight and temperature cause piping deflection in the lower elevation, and this location is a source for the accumulation of condensation. Moreover one or two support me be lift-off due to downward expansion of the line.

In item 2 first support near the vertical run is close to the elbow and vertical expansion is in the upward direction. This causes the lift-off of some supports on the upper level.

Which arrangement is the best practice for flare or steam lines?