I read through API 653 section 4.4 (Tank bottom evaluation)
Just need a confirmation from the expert:
With tank contain water which SG=1.0, (assuming Stress<27,000PSI, and thickness 1st shell course<0.75)for minimum thickness require for annular plates ring will be 0.236in (~6mm)
and we do not...
Hi,
I have a question regarding replacement annular plate with API 653
My understanding: when replace and remove an entire existing tank bottom, the tank shell shall be separated form tank bottom minimum 1/2in above the bottom-to-shell weld (line B-B in Fig.10.1)
How about when replace only 1...
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...
