Ob-round or Oval Flange for ASME VIII vessel calcs.

[APItank]

Our shop is currently building 4 x 20 75# MAWP, non-code heater treaters from a design passed down to us w/out flange calcs. These vessels have a 20" x 42" firebox flange.
Our e-tank software will not calculate the oval flange.

Is there any calc. software available that can do the oval flange?

Thanks

 

[jte]

Pencil. Paper.

Why buy software for a one-off calc that you should be able to do the way the older generation did? How would you verify / validate the software? Or would you just accept its results at face value?

jt