shehzad305
Materials
Greetings!
This is to seek your advice on below issue in Atmospheric Storagge Tank Bottom Plate.
It is very common in the indusrty that underside/soil side corrosion happens due to poor sealant management. This causes corrosion of bottom/annular plate outer projection ring at first and penetrates inwards in the critical zone of tank bottom and so on.
Once corrosion is revelaed on outer projection ring by Ultrasonic thickness survery, we do Short Range UT to check the thickness of bottom/annular plate in the critical zone (1meter inwards from shell).
Kindly help me to understand what will happen if some length (2 to 3 meters) of outer projection ring is very low thickness i.e. less than 2.54mm. OR incase the shell to outer projection ring weld gets deteriorated.
This is to seek your advice on below issue in Atmospheric Storagge Tank Bottom Plate.
It is very common in the indusrty that underside/soil side corrosion happens due to poor sealant management. This causes corrosion of bottom/annular plate outer projection ring at first and penetrates inwards in the critical zone of tank bottom and so on.
Once corrosion is revelaed on outer projection ring by Ultrasonic thickness survery, we do Short Range UT to check the thickness of bottom/annular plate in the critical zone (1meter inwards from shell).
Kindly help me to understand what will happen if some length (2 to 3 meters) of outer projection ring is very low thickness i.e. less than 2.54mm. OR incase the shell to outer projection ring weld gets deteriorated.
