Code requirements for pipe by size

[scarg]

Greetings,

Is it true that if a pressure vessel is smaller than 6" IPS that it is not required to be code stamped? This would be for water at less than 200 F and under 700 psig -the pipe is welded seam schedule 10- 316L stainless steel.
Best Regards,

Steve

 

[bvi]

The rule is, for Section VIII, Div 1, that vessels with an inside diameter of 6 inches or less are not within the scope of the Code. That is why you see the small diameter air cylinders in some air compressors.

 

[jte]

scarg-

To quote chapter and verse for cb4's information see Section VIII Div. 1 U-1(c)(2)(i).

jt