![]() This is because the annular plates are the linking members between the tank vertical shell and horizontal floor. Unlike floor rectangular and sketch plates, the replacement of the floor annular plates requires a special technique. A few methods have been implemented recently to replace the floor annular plates by lifting or cutting the tank shell to provide the necessary access to perform the work. This normally entails replacement of the corroded floor annulus ring. Many of the bulk liquid storage tanks that were built in the early sixties now need major overhaul. It provides a practical, economical approach to lifting storage tanks of different types and sizes. The sequential lifting method has been successfully used to repair storage tanks when other methods were not recommended, or considered impossible.
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