Hi all while designing a tall pres
Hi all while designing a tall pres
(OP)
Hi all
while designing a tall pressure column I came across a situation to use stiffener rings. As a cost optimization approach I was trying to use the internal rings provided for placing packing trays as my internal stiffener ring. Is there anything wrong with my approach?
Thanks in advance
while designing a tall pressure column I came across a situation to use stiffener rings. As a cost optimization approach I was trying to use the internal rings provided for placing packing trays as my internal stiffener ring. Is there anything wrong with my approach?
Thanks in advance





RE: Hi all while designing a tall pres
RE: Hi all while designing a tall pres
Can the inner stiffener rings corrode so you might lose shell stiffeners over time? Otherwise, as long as you design for whatever loads/stresses the multi function inner rings might see, it seems there might be some savings in not needing an out set of stiffener rings, not an insignificant cost. I don’t know what prohibitions the ASME codes might put on this arrangement.
RE: Hi all while designing a tall pres
Yes, you can use this design
Regards
r6155
RE: Hi all while designing a tall pres
Please refer para. UG-29(b), UG-29(C). This talks about stiffening rings welded on inside surface of vessel.
RE: Hi all while designing a tall pres
RE: Hi all while designing a tall pres
Matt
RE: Hi all while designing a tall pres
With rings located on the outside, the main pressure boundary can be thickness examined from the outside using UT.
With rings located inside, now access must be made available on a regular schedule to perform thickness examinations of the internal rings.
This should be discussed with the customer.
Cheers,
RE: Hi all while designing a tall pres
Inner ring are mostly used for internal equipment connections. and they introduce the wall additional local stresses under the loads. The loads can be sourced by the weight of the equipment and/or differential pressure between the chambers and/or weigh of process liquid.
If you use them combined you will not be able to design the vessel by hand any more. You need a FEA software to go through all the load cases accurately and find stresses and strains in the localised areas to evaluate. For this application you need to know what you are doing.
I understand from your question you are not a competent engineer for the purpose. Therefore I would not suggest you to use the same ring for different purposes at the same time, and even if you use both inner and external stiffeners on the vessel wall I would pay attention that they are not in line and separated with their effective distances not to involve in the stress combinations which may become very complex.
RE: Hi all while designing a tall pres
Regards
r6155
RE: Hi all while designing a tall pres
Regards
r6155