Manhole in ASME VIII Div.1 Pressure Vessels
Manhole in ASME VIII Div.1 Pressure Vessels
(OP)
Hi all.
I have to design some separators with ASME VIII Div. 1. One of these is 20" ID.
My Owner wants the possibility to have access to the internals (vane packs) for maintenance. So i need a manhole at least of 18-20 inches and of course it's impossible for a vessel with 20" ID.
The question is this: Does the ASME VIII Div.1 give a limitation to the diameter of manholes taking in consideration the diameter of the vessel?
If the Code doesn't give any limitation, is it possible to design a vessels like a tee with caps and flanges?
Thanks for your answers
I have to design some separators with ASME VIII Div. 1. One of these is 20" ID.
My Owner wants the possibility to have access to the internals (vane packs) for maintenance. So i need a manhole at least of 18-20 inches and of course it's impossible for a vessel with 20" ID.
The question is this: Does the ASME VIII Div.1 give a limitation to the diameter of manholes taking in consideration the diameter of the vessel?
If the Code doesn't give any limitation, is it possible to design a vessels like a tee with caps and flanges?
Thanks for your answers





RE: Manhole in ASME VIII Div.1 Pressure Vessels
Can you just flange one end (or both) of the separator and use that for a manway?
RE: Manhole in ASME VIII Div.1 Pressure Vessels
Technically I believe you could use a 20" x 20" x 20" B16.9 tee without having to calculate the opening reinforcement since it is a part certified by another standard. But the body flange is by far the superior option from the perspective of plot space and ease of accessibility to the internals.
jt
RE: Manhole in ASME VIII Div.1 Pressure Vessels
-jehan
RE: Manhole in ASME VIII Div.1 Pressure Vessels
I'll go in that way.
Thanks for your answers!