Submerged coating repair of potable water systems
AssigneeAdvantage Technical Services, Inc.
InventorWilliam D. Bellis
Life of this patent
Estimating the term…
Abstract
Systems and methods for safely repairing potable water tanks when submerged within a tank. Several barriers are used to separate the coating material after application to the area of the tank needing repair from the potable water. The barrier may be shield structure defining a cavity and having an aperture and valve for injecting the coating material into the cavity, or the barrier may be a sheet preloaded with coating material and stored within and delivered via a transfer shield, or the barrier may be a continuous sheet delivered over the top of the coating material at the same time it is applied. The barrier layer, be it a shield structure sheet or continuous sheet, becomes adhered to the substrate being repaired so post cure removal is not required.
Claims19
A method of underwater repair of an area of a potable water tank needing repair for in situ repairs with none or de minimus contact between a coating material and potable water in the tank, including:
- providing a barrier shield having a sealing edge and defining a cavity and an aperture into the cavity;
- pressing the sealing edge against the potable water tank with the cavity over the area needing repair;
- connecting a source of coating material to the aperture;
- injecting coating material into the cavity through the aperture;
- removing the source of coating material from the aperture;
- and
- permitting the coating material in the cavity to cure.
7-20. (canceled)
A method of underwater repair of an area of a potable water tank needing repair for in situ repairs with none or de minimus contact between a coating material and potable water in the tank, including:
- providing a barrier shield having a sealing edge;
- pressing the sealing edge against the potable water tank with the barrier shield over the area needing repair;
- providing a source of coating material;
- injecting coating material into a space between the barrier shield and area needing repair;
- removing the source of coating material from the aperture;
- and
- permitting the coating material to cure.
Dependencies are inferred from the claim text.