kalluna
Mechanical
- Jun 25, 2009
- 7
Hi,
We have a situation where a 20 yr old tank was moved in order to replace liner. We had an API 653 on tank in old location in 2003 and it showed several locations (3 stations) with higher than acceptable edge settlement. This summer the tank was moved. We did hydrotest, and an API inspection. The tank has edge settlement now in only one location and not too much of it(2.4 inches versus 2 inch allowable. API report says to replace that one floor plate as it was under strain. We are wondering if this strain and continued deflection/settlement was caused by the move but we really have no way to find out, do we? We did not have an API done just before moving the tank in spring-perhaps we should have?
We have a situation where a 20 yr old tank was moved in order to replace liner. We had an API 653 on tank in old location in 2003 and it showed several locations (3 stations) with higher than acceptable edge settlement. This summer the tank was moved. We did hydrotest, and an API inspection. The tank has edge settlement now in only one location and not too much of it(2.4 inches versus 2 inch allowable. API report says to replace that one floor plate as it was under strain. We are wondering if this strain and continued deflection/settlement was caused by the move but we really have no way to find out, do we? We did not have an API done just before moving the tank in spring-perhaps we should have?