What are the Three T’s for Tank Lining?
So many lining projects end up with defective conditions associated with the three T’s.
To me the three T’s are Technique, Time and Temperature.
Following are examples of what conditions can exist and they are not difficult to prevent with proper project planning.
Fundamentals in application consist of good metal preparation and cement practices, allowing the proper times for drying before proceeding to the next operation. One should use a 30° skive on rubber and it is best to work most synthetics from a hot table for stability of the sheet. Also, it’s always recommended to have a fillet strip in 90° corners. This aids in application and prevents the lining from pulling out of the corner during vulcanization. The application skills all represent proper technique and we trust you have proven procedures.
In lining application repairing and curing time to do the job is an essential component. One can reflect on the old adage we wish we had taken the time to do it correctly, for to redo it takes a lot longer.
In curing, one can make preparation to save time by planning for proper boiler size, insulating the tank, curing temperatures to be used, cured gaskets on flanges and equipment to monitor curing the lining.
Having the proper application techniques and allotted time to do the project provides self esteem for the three T’s;
Technique, Time & Temperature
For a successful project it’s best to be correct and it never hurts for the bottom line to be enhanced.
Possibly it should be the 4 P’s: Planning, Preparation, Procedure & Profit
The above Blair Rubber technical bulletin was written by Richard K. Lewis, Retired Executive Vice President, Blair Rubber Company. Blair Rubber’s technical staff can provide further assistance with Blair’s products and questions/answers that are not addressed in this bulletin.