U stamp on pressure vessels
U stamp on pressure vessels
(OP)
We make small pressure vessels in stainless steel. We think we are excluded from U-stamps according to U-1(c)(2)(i), because all our vessels are smaller than the dimensions called here.
ABSA Canada disagree on this and said they we do need U- stamps on out vessels.
Has anyone experience with this problem?
ABSA Canada disagree on this and said they we do need U- stamps on out vessels.
Has anyone experience with this problem?





RE: U stamp on pressure vessels
RE: U stamp on pressure vessels
What type of pressure vessels do you make? What fluid will be contained in them and what are the dimensions of the vessel?
Have a look at this ABSA PESR User Guide and see if your vessel is really exempted... h
Also take note of U-1(c)(1).
RE: U stamp on pressure vessels
my 2 cents
EJL
RE: U stamp on pressure vessels
What do you call a "small pressure vessel"?
If diameter of you shell is more than 6", in Canada you need "U" stamp. Moreover, you have to register your design with authorities, in case of Alberta with ABSA. In order to do that you need to mail out two copies of drawings with bill of material, and one copy of code calcs with your application to the attn. of design survey.
You might be able to register your small vessel as a "H" fitting according CSA B51, which is easier than "U" stamp.
Regards,
Curtis