Secondary containment panels and process for making and installing same

摘要

A method of manufacturing a plurality of secondary containment panels and assembling and installing the panels in a secondary containment system of an above-ground liquid storage tank or other retention facility includes forming a plurality of flexible substrate pieces. A liquid impermeable coating is applied to the upper surface of each piece such that an edge segment of the piece remains uncoated. The coating is applied to the substrate piece in an indoor enclosure using a computer controlled robotic sprayer that applies a uniform coating. Metal plates are embedded in the floor used for quality control testing of the coating thickness using magnetic gauges. At least a pair of the pieces are juxtaposed relative to one another such that a first one of the pieces overlaps the uncoated segment of the second piece to form a seam.

主权项

1. A method comprising:
a) laying out and positioning a substrate having a length and a width wherein the substrate is in a flat stationary position on a flat stationary surface or floor; b) positioning a self propelled robotically longitudinally moveable computer controlled carriage and only one sprayer laterally movable across the carriage wherein the carriage is moveable upon the flat surface proximate to or straddling over the substrate; c) connecting the sprayer to a coating supply source; e) activating the computer controlled sprayer and carriage to move and spray; f) spraying an impenetrable coating in a lateral direction by traversing the sprayer across the carriage wherein the sprayer is in a fixed orientation relative to the underlying stationary substrate; g) continuing to spray an impenetrable coating by moving the carriage longitudinally over the stationary substrate, wherein the carriage may move on the flat surface to straddle over the entire length of substrate; and h) allowing the coated substrate to cure on the flat surface without stretching or distorting the substrate.