Hi all,
During some round inspection on gasoline tank: few scabs (built-up) product with weeping mark were observed on lap-weld shell seam. The tank is empty now. We conducted close-up visual inspection conjunction with NDT MPI, there was evident of weep hole on corrosion weld with product existing and weep out (really slow) between the gap of shell lap-welds.
Based on API 653, repair plate lap-weld not allowed to install lapped onto lap-welded shell seams (section 9.3.1.10). We either could not pad weld to seal the weep hole on the lap-weld due to flammable and explosion hazards from leakage product.
With your high experience from all of you, what is your recommendation to repair on this case?
Appreciate for all advices.
Thanks
During some round inspection on gasoline tank: few scabs (built-up) product with weeping mark were observed on lap-weld shell seam. The tank is empty now. We conducted close-up visual inspection conjunction with NDT MPI, there was evident of weep hole on corrosion weld with product existing and weep out (really slow) between the gap of shell lap-welds.
Based on API 653, repair plate lap-weld not allowed to install lapped onto lap-welded shell seams (section 9.3.1.10). We either could not pad weld to seal the weep hole on the lap-weld due to flammable and explosion hazards from leakage product.
With your high experience from all of you, what is your recommendation to repair on this case?
Appreciate for all advices.
Thanks