Thank you sir, pardon my ignorance to this media and providing so little info.
We are repairing pitting, primarily in the weld and HAZ area of a 650 tank, the pitting per the metallurgical folk is not preferential to the welds, but build up has been attracted to the welds and the mechanism is being considered under deposit.
We have ( pre- coating application) pt inspected the excavated areas and re-welded with a final PT, prior to flat topping the welding for a lap patches (engineering exempt from 653).
This corrosion has been repaired on approximately 600 linear feet of weld, in a tank with 3000 linear feet of shell welds.
We have one faction interpreting, 653 latest edition, section 9.6, that weld corrosion / repair, is a weld defect and the requirements of 12.1.3, leading to 100% radiography apply.
The other are arguing that only, weld induced flaws , per 9.6.1 require 100 % RT inspection per 12.1.3.
We are currently inspecting the final welds per section 12.2 ( C- repaired weld joints.) RT inspecting a representative sample of each welder.
100% RT seems excessive, what do you guys think.
Thanks in advance!!!! FKOK