LPG sphere - plate support
LPG sphere - plate support
(OP)
Hi,
I would like to know if it's possible weld a pipe support over a plate that is welded/attached an sphere, without lose the ASME stamp?
Attached, you will find a sketch about the question previous.
Thanks in advance
I would like to know if it's possible weld a pipe support over a plate that is welded/attached an sphere, without lose the ASME stamp?
Attached, you will find a sketch about the question previous.
Thanks in advance





RE: LPG sphere - plate support
RE: LPG sphere - plate support
Your post and drawing are contradicting each other, but the end is that you may not weld the pipe support to the plate without properly re-engineering the sphere design.
On the drawing you point to the plate you intend to attach to the vessel, in the post you mention the pipe support you intend to attach to the plate. Either way, if you weld the plate to the vessel, you violate the code. If you add a pipe support to the plate, you also increase the external loads on the shell, so you must re-engineer the design.
Otherwise, you loose the U-stamp.
Cheers,
gr2vessels
RE: LPG sphere - plate support
Aditionally, we will send the loads in these points for the sphere manufacturer, in order to be considered in the design of the shell.
Under these circumstances we will lose the U-stamp?
RE: LPG sphere - plate support
Regards,
Mike
RE: LPG sphere - plate support
Regards,
Israel
RE: LPG sphere - plate support
Regards,
Mike
RE: LPG sphere - plate support
RE: LPG sphere - plate support
If this is an addition to an existing U-Stamped vessel, it still may be done and can be considered a Repair or Alteration dependent on whether it satisfies either 3.3.3 b) 4) or 3.4.3 of Part 3 of the NBIC. In either event, calculations will no doubt be required for AI review. If an Alteration, calculations must be done by a Holder of an R-Certificate.