This redneck from western KY can understand one of the most fundamental requirements from ASME B31 standards…
ONLY certified welders can make the welds AND each weld MUST be IDENTIFIED as to who made the weld(s)!
Now ASME gives us options for meeting the “identification” requirements (e.g., stamping or Isometric Drawings). Still, these two requirements are a MUST-have for our PSM/RMP piping when the RAGAGEP references the ASME B31 standards. Here is how it is stated…
NOTE: ASME offers an online, self-study course to help anyone understand these requirements. You have 90 days to complete the course, and I highly recommend safety professionals dealing with PSM/RMP at least take this online course. This course is designed for anyone who wants an introduction to and a better understanding of the B31.3 Process Piping Code.
(emphasis by me)