The shell bends down then rises up at concrete ring around center sump. The API653 B.3.3 equation, only allows 2.36in deformation for distance between ring wall and sump concrete, so I think we have an issue. I'm fairly sure it is loss of pad sand. There are unconfirmed reports of one of the 10...
Hello Everyone,
I've run into a failure I'm unfamiliar with on API650 tanks and could use some advice. The tank was built in 2018 to API650 App.M, 30'dia x 40'h operating at 350F. The bottom is made of 1/4" A36 and tank sits on concrete ring wall with engineered fill and pad sand inside. We...
