Is it mandatory to stamp all pressure vessels?
Is it mandatory to stamp all pressure vessels?
(OP)
I am designing a Div I vessel to be installed in California. Design Pressure: 50 psig.
Our Customer don't want to get it Code Stamped or National Board Registered... Can we do that?
Thanks
Our Customer don't want to get it Code Stamped or National Board Registered... Can we do that?
Thanks





RE: Is it mandatory to stamp all pressure vessels?
Get in touch with the Boiler Safety Division for the State of California to determine if they regulate pressure vessels. If they do regulate pressure vessels, you need to follow their requirements for registration and Code stamping not the customer's.
RE: Is it mandatory to stamp all pressure vessels?
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Regards,
Mike
RE: Is it mandatory to stamp all pressure vessels?
In non-code states, the state is not going to enforce registering vessels with the National Board, but it also doesn't prevent it. If I was building vessels destined for use in California I'd make damned sure that I had every calc, NDT inspection, and material pedigree required by the code in a "DO NOT DESTROY" file forever. I'd also register the vessel with the Board even if I had to eat that cost myself.
David
RE: Is it mandatory to stamp all pressure vessels?
There is obviously more to this than above and it is called lobbyists and special interest groups that protect industries. Boiler rules were established well before pressure vessel rules because boiler explosions were commonplace in the late 1800's.
Normally, owners of pressure vessels typically insure their equipment against loss. The insurers of this equipment usually require the owner to register the vessel and assure code stamping, among other things.
RE: Is it mandatory to stamp all pressure vessels?
We had one Client over the years that fussed about it and we told him it was for our protection as well as his.
When you have fabricator prepare his data book, tell him to put everything required in there. electronic copy for you and your client.
RE: Is it mandatory to stamp all pressure vessels?
jt
RE: Is it mandatory to stamp all pressure vessels?
§460. Design and Construction of Pressure Vessels for other than Compressed Air, LPG, NH(3) and Natural Gas.
(a) All new pressure vessels for pressures exceeding 15 psig used for the transportation, storage, or use of any poisonous, corrosive, or flammable substance, or other products at temperatures above their boiling points at atmospheric pressures, or in which the pressure is generated by means of a compressor, shall be constructed, inspected, and stamped in compliance with the ASME Code, unless the design, material and construction of the vessel are accepted by the Division as equivalent to the ASME Code. Except for "UM" vessels, all such vessels shall be registered with the National Board of Boiler and Pressure Vessel Inspectors.
RE: Is it mandatory to stamp all pressure vessels?