I want to take tapping of 4 " from 10 " size. But after welding of 4" branch i am not in position to perform Hydrotest or Rediography. So what NDT i have to perform and which standard allow it to do so.
In addition to the specified B31.3 piping code, there may be local requirements and contract specifications involved. None of this other information has been given. Nor do we know what type of services this is; nor do we know what pressures and pipe schedules are being used.
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In vino veritas; in cervisia carmen; in aqua E. coli.