SA193-B7M > 2 1/2"
SA193-B7M > 2 1/2"
(OP)
We have an application where we would like to use 2 3/4" studs. Is anyone aware of any relaxation for use on a Div 1 vessel. Thanks in advance.
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RE: SA193-B7M > 2 1/2"
RE: SA193-B7M > 2 1/2"
RE: SA193-B7M > 2 1/2"
I figured you would probably respond rather quickly with the answer I provided. Before elaborating, I should have probably prefaced my answer with a question - where exactly are the studs going to be used in the pressure vessel? If the studs are to be used in a horizontal or vertical flange that is a direct part of the pressure vessel (it is designed for exposure to direct pressure), the answer is Section VIII, Div 1 for bolting follows the specific requirements in Section II, Part D (which limits your use at 2.5" and under).
If the studs are used external to the pressure vessel - like a nozzle flange or appurtance flange, you can refer to one of the B31 Piping Codes for guidance.
RE: SA193-B7M > 2 1/2"