Welding Inspection & Metallurgy API ICP Self Study Notes

4.2.8 Weld Preparation
Confirm weld preparation, joint fit-up, and dimensions are acceptable and
correct.
4.2.8.1 Quality control items to assess:
a. Weld preparation surfaces are free of contaminants and base metal
defects such as laminations and cracks.
b. Preheat, if required, applied for thermal cutting
c. Hydrogen bake-out heat treatment, if required, performed to procedure.
d. Weld joint is free from oxide and sulfide scales, hydrocarbon residue, and
any excessive build-up of weld-through primers.
e. Weld joint type, bevel angle, root face and root opening are correct.
f. Alignment and mismatch is correct and acceptable.
g. Dimensions of base materials, filler metal, and weld joint are correct.
h. Piping socket welds have proper gap.
4.2.8.2 Potential inspector action:
Reject material or correct deficiencies.