I recently received a question from a client about “piping inspection methods for newly installed piping”. It seems that a general contractor was advising the facility that they were “required” to do some “thickness testing” on newly installed piping as part of the installation QA/QC. The PSE asked me “So are we required to take TML’s on newly installed piping?”
The short simple answer is NO, but as I have written about many times, we do have QA/QC requirements for newly installed (and repaired) piping. So here is what API 570 (the code referenced by the GC) says about piping inspections during installation and service changes…
(emphasis by me)