We need to perform calcs based on the original allowable stress values to determine the current required thickness. I have the data report, which tells the original thickness and the current UT report that gives a more up-to-date reading of what is left.
I am re-rating a vessel built in 1967, that used some form of the 1965 stress values for the material (not sure the edition, assuming latest in that code year). Per NBIC, since the vessel is pre-1968, I'll need to use the original code of construction stress values. The materials I'm looking...
