US 10,016,782 B2 · Submerged coating repair of potable water systems

Abstract

Systems and methods for safely repairing potable water tanks when submerged within a tank. 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. Methods of repair include pressing the sealing edge of a barrier shield over an area, injecting coating material between the barrier shield and area, removing the source of coating material, and permitting the coating material to cure.

Claims20

Dependent claims

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, comprising:

providing a barrier shield having a sealing edge and defining a cavity and an aperture into the cavity, and a valve at the aperture;
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 valve at the aperture;
injecting coating material into the cavity through the aperture;
removing the source of coating material from the aperture, wherein the valve prevents egress of coating material from the cavity when the source of coating material is removed from the aperture;
and
permitting the coating material in the cavity to cure.

4 more elements

Dependencies are inferred from the claim text.

Submerged coating repair of potable water systems

Life of this patent

Submerged coating repair of potable water systems

Life of this patent

Abstract

Claims20