Fillet Welding on shell of Propane/ Butane Spheres for Pipe supports
Fillet Welding on shell of Propane/ Butane Spheres for Pipe supports
(OP)
I am struggling on an unique situation.
There are spheres which are U stamped almost 30 years old, on which fillet welding needs to be performed to put reinforcement pads to take out some pipe supports later. My question is, has it been done anywhere in the world? I know as per ASME, it is allowed. However does anyone has prior experience on this?
Experts opinion please!!
There are spheres which are U stamped almost 30 years old, on which fillet welding needs to be performed to put reinforcement pads to take out some pipe supports later. My question is, has it been done anywhere in the world? I know as per ASME, it is allowed. However does anyone has prior experience on this?
Experts opinion please!!





RE: Fillet Welding on shell of Propane/ Butane Spheres for Pipe supports
RE: Fillet Welding on shell of Propane/ Butane Spheres for Pipe supports
RE: Fillet Welding on shell of Propane/ Butane Spheres for Pipe supports
Thanks @metengr - design review has been performed by doing FEA. On query to second, do you recommend to engage same organization who did the U-Stamp? Note that the storage spheres are 30 years old. However every 10 years inspections are performed and didnt reveal anything surprising. Everything is well within corrosion allowance.
Has it been performed this kind of activity anywhere in the world? I know there are plenty of columns, pressure vessels where such kind of revamp works are done. But I personally haven't heard of anything done on storage spheres. Therefore needed help from experts.
RE: Fillet Welding on shell of Propane/ Butane Spheres for Pipe supports
RE: Fillet Welding on shell of Propane/ Butane Spheres for Pipe supports
RE: Fillet Welding on shell of Propane/ Butane Spheres for Pipe supports
@chicopee - Thanks. As per my R-stamp inspectors, it would be called as alteration since its addition of Reinforcement Pads (and not any repair).
RE: Fillet Welding on shell of Propane/ Butane Spheres for Pipe supports
RE: Fillet Welding on shell of Propane/ Butane Spheres for Pipe supports
Do you plan on rounding the corners of the reinforcing pads that you plan to attach ?
MJCronin
Sr. Process Engineer
RE: Fillet Welding on shell of Propane/ Butane Spheres for Pipe supports
@MJCronin - I have attached 3D model of some of the vessels. I think these kind of welding won't call for PWHT. https://res.cloudinary.com/engineering-com/image/upload/v1458461257/tips/Light_Naphtha_qhbdvc.pdf
&
http://files.engineering.com/getfile.aspx?folder=6...