Protection method
AssigneeThe British Petroleum Company p.l.c.
InventorJoseph Edward Barrett
Life of this patent
Estimating the term…
Abstract
A method for protecting ground surfaces from spilled petroleum products, i.e. in bund areas, which comprises covering the surface with a layer of fibre reinforced unsaturated polyester resin applied on top of a membrane which is impervious to the resin and sufficiently flexible to accommodate the ground contours.
Claims13
A system for rendering the earth ground surfaces of a hydrocarbon storage tank bund impervious to hydrocarbon liquid and for detection of hydrocarbon seepage from said tank comprising
- a. a laminate of
- i. a polymeric membrane on the ground surface of said bund, and
- ii. a continuous, glass-fibre reinforced, sheet of a cured unsaturated polyester resin on said membrane,
- said membrane being capable of preventing loss of unsaturated polyester resin prior to its cure and sufficiently flexible to conform to the contours of the ground surface under the weight of the uncured resin, said laminate extending to at least the perimeter of the walls of said bund;
- b. drain means in said laminate within the area to be occupied by said tank;
- c. at least one inspection chamber disposed outside the periphery of said tank and below the bottom of said tank;
- and
- d. conduit means for conveying by gravity hydrocarbon liquid collecting in said drain means from said laminate to said inspection chamber.
A system for rendering the earth ground surfaces of a hydrocarbon storage tank bund impervious to hydrocarbon liquid and for detection of hydrocarbon seepage from said tank comprising
- a. a laminate of
- i. a polymeric membrane on the ground surface of said bund, and
- ii. a continuous, glass-fibre reinforced, sheet of a cured unsaturated polyester resin on said membrane,
- said membrane being capable of preventing loss of unsaturated polyester resin prior to its cure and sufficiently flexible to conform to the contours of the ground surface under the weight of the uncured resin, said laminate extending to at least the perimeter of the walls of said bund;
- b. a compacted mineral foundation for said tank disposed on said laminate within said bund;
- and
- c. at least one inspection chamber disposed outside of and below the area of said laminate occupied by said foundation for collecting by gravity any hydrocarbon seepage from said tank passing through said foundation.
Dependencies are inferred from the claim text.