Hi all,

for a extended tube-sheet gasketed at both channel and shell side, i should be able to skip UHX-9.5(a) formulae for UHX-9.5(c)? I am confused with the part in ASME when it says "no bolt loads applied to the extension" when its a flange extended tubesheet but i do need a lower thickness for my flange extension.

Also, i reckon that the check-box in PVelite tubesheet input is for this purpose? Do correct me if i am wrong and thank you!

Lemonlime