Control Valve Repair: The pressure test

[Lmarcano]

What is the applicable code to support a pressure test after welding repair in a control valve body. We review ASME B16.34a but this code refers to New valves, Can we use this procedure? Do you know another code or practice more specific? I think that is not convenience use it (B16.34b) because the body has less thickness due the use.

Thanks in advance

 

[kstaylor]

We use API-598 for testing of all our valves. API-598 addresses hydrostatic tests of the shell (i.e. valve body)as well as testing of the valve in the closed position for leakage.

 

[vpl]

What about ASME Section XI? Doesn't that apply to repair of valves? Or does it depend on the application. Patricia Lougheed