minimum thickness of shell of presure vessel

[212197]

In my case as per Sec. VIII div 1 formula, shell thickness including corrosion allowance is 1 mm.
1)Considering structural integrity, is to mandatory that plate thickness of shell should not be below 6 mm?
2) what is the reference code clause for it? UG-16 b sets limit of 1.6 mm.

 

[JStephen]

Your available welding equipment and procedures; local loads due to saddles, clips, lifting lugs, etc.; handling considerations, customer specifications, material availability and formed head availability may all limit the minimum thickness used.

 

[david339933]

1.6mm minimum does not include CA......