Vessel Code Exceptions

[Gern001]

Is there an exception to the codes for 6" or greater diameter that take into consideration internal volume of the vessel? If you have a 6" diameter vessel that is full of material how is that different from a smaller empty one? Wouldn't a 6" diameter x 24" long vessel, 75% full of a solid granular material = a 3" diameter x 24" long vessel empty?

 

[TGS4]

As with so many replies to questions of this nature, I will again ask the usual questions:
1) Where is the vessel going to be located?
2) Does this location have legal requirements for following the ASME Standard?
3) Are there any additional local requirements above and beyond ASME requirements?
4) Have you contacted your juristiction? What have they said?
5) Have you contacted your insurance underwriters? What have they said?
6) What is the fluid in the vessel? Is it expandable, inert, reactive, toxic, etc? What is the solid in the vessel?
7) What is the design pressure and temperature?

 

[metengr]

Ok. I will summarize the applicable ASME B&PV Code, Introduction to Section VIII, Div 1 Unfired Pressure Vessels. This applies to vessels that are EXEMPT;

...U-1 (h). vessels having internal or external operating pressure at or below 15 psi

U-1 (i). vessels having an inner diameter, height, width or cross section diagonal less than or equal to 6" with no limit on length or pressure.

Obviously, volume is not under consideration.

As stated above, Jurisdictions may impose additional requirements above and beyond the exemptions listed above.

 

[GenB]

YOUR POSTING:
that is full of material how is that different from a smaller empty one? Wouldn't a 6" diameter x 24" long vessel, 75% full of a solid granular material = a 3" diameter x 24" long vessel empty?

THE DIFFERENCE IS THAT THE VESSEL FULL OF GRANULAR MATERIAL
WILL BE CALLED: A BOMB
GB