Half skirt design for vertical vessel
Half skirt design for vertical vessel
(OP)
Hi guys,
I'm working on a vessel design which my client requires two half skirts welded on opposite sides of the dished head for its support. The vessel is a relatively small vessel (508mm OD) with two curved plates welded at opposite ends leaving the mid section open for access to the nozzles on the head. I've gone through some handbooks but didnt get much luck. I've also gone through previous threads to see if i could get the help i needed but the closest i saw was a large opening on the skirt which i assumed to be different. I guess someone might have had a similar experience and would appreciate if anyone could refer me to a book or an idea to go about this.
Thanks in advance.
Fizzy.
I'm working on a vessel design which my client requires two half skirts welded on opposite sides of the dished head for its support. The vessel is a relatively small vessel (508mm OD) with two curved plates welded at opposite ends leaving the mid section open for access to the nozzles on the head. I've gone through some handbooks but didnt get much luck. I've also gone through previous threads to see if i could get the help i needed but the closest i saw was a large opening on the skirt which i assumed to be different. I guess someone might have had a similar experience and would appreciate if anyone could refer me to a book or an idea to go about this.
Thanks in advance.
Fizzy.





RE: Half skirt design for vertical vessel
RE: Half skirt design for vertical vessel
RE: Half skirt design for vertical vessel
Did you ask your client for the reason why he requires two half skirts ?
Time after time, I find that clients just seem to express bizzare "preferences" without any sort of reason or clear process need..
Again, I strongly advocate extensive drug testing of all clients at the earliest stages of a project.
Go with a multiple leg scheme.....like the rest of the world does.
-MJC
RE: Half skirt design for vertical vessel
I'll have a chat with my client on your comments and see how things go from there.
Thanks once again.
fizzy.
RE: Half skirt design for vertical vessel
RE: Half skirt design for vertical vessel
Regards,
Mike
RE: Half skirt design for vertical vessel
These are used on small vessels to allow you more access to the bottom head nozzle.
However these should not be used on vessels subject to fatigue or vibration (e.g. connected to a compressor system)and on vessels that need the skirt to be fireproofed.
I even have a calculation for a half skirt somewhere at home - if I knew I could find it easily I would offer you a copy
RE: Half skirt design for vertical vessel
I'll appreciate your calculation if you don't mind and maybe your referenced text. My problem is i can't find materials on half skirt design and i'm of the opinion that it's calculation is different from the calculation of an opening in a skirt which is explained in Bednar's handbook.
Regards,
fizzy