qualitypro
Mechanical
- Sep 30, 2003
- 91
I would like to know if a ASME VIII Div.2 vessel shop hydrotested at about 5000 psig and approved by the AI outside the US can be subjected to a rehydrotest in the field as part of the associated piping system circuit. The field piping joints are directly buttwelded onto the vessel nozzles and the customer is not inclined to have flanged joints or golden welds as we are dealing with high pressure critical toxic systems. Are there specific code requirements to be followed and are Code cases available that support this case? If so, what are the precautions to be taken per design code.