PetroStreet

How helpful can performing AET be in delaying internal inspection of storage tanks as per API?
It has been recognized as a screening tool but what gain would it be having in the inspection confidence once performed.
Refer to API 653 along with API RBI.

See as you may know API 653 limits dependability on AET while considering that as an inspection tool providing quantitative inputs.
You may still use the technique to reconsider performing internal inspection at a later date as some confidence can be gained within RBI.
However, a lot depends upon how AET is applied. Usually, your RBI Engineer would question that before he factors that.