FLUID STORAGE TANK WITH SPILL CONTAINMENT
First Claim
1. A fluid storage tank having an interior volume and a floor and having an internal spill containment chamber, said chamber comprising:
- (a) a containment wall which completely separates the chamber from the tank interior volume;
(b) an attachment flange disposed about a periphery of the chamber for attachment to the tank;
(c) at least one fluid outlet for fluid communication with the tank interior volume;
(d) valve means associated with the fluid outlet for controlling fluid flow through the fluid outlet; and
(e) low-friction support means disposed between the tank floor and the containment chamber.
8 Assignments
0 Petitions
Accused Products
Abstract
The present invention provides for above-ground fluid storage tanks having an internal spill containment system. In particular, the present invention is directed to an oil storage tank with a valve and spill containment system, where the valves are kept in a warm and dry environment, protected from the elements, but which still readily accessible, and, further, where spillage from the valves is contained. Further, the containment system disclosed allows for convenient retrofit into existing tanks as well as new tank manufacture. The invention discloses a containment chamber that will fit into existing manways and which is bolted to the tank using the existing bolt pattern that held the manway door on.
13 Citations
12 Claims
-
1. A fluid storage tank having an interior volume and a floor and having an internal spill containment chamber, said chamber comprising:
-
(a) a containment wall which completely separates the chamber from the tank interior volume;
(b) an attachment flange disposed about a periphery of the chamber for attachment to the tank;
(c) at least one fluid outlet for fluid communication with the tank interior volume;
(d) valve means associated with the fluid outlet for controlling fluid flow through the fluid outlet; and
(e) low-friction support means disposed between the tank floor and the containment chamber. - View Dependent Claims (2, 3, 5, 6, 7, 8, 9, 10, 11)
-
-
4. The tank of claim 4 wherein the low-friction support means comprises a high-density polyethylene plastic.
-
12. A method of fitting a fluid storage tank with a spill containment chamber, wherein said tank defines a pre-existing or newly created manway opening, said method comprising the steps of:
-
(a) providing a containment chamber having an attachment flange which is larger than the manway opening;
(b) sliding the chamber into the tank through the manway opening using a low-friction support device disposed between the tank floor and the containment chamber;
(c) bolting the attachment flange to the tank using pre-existing or newly created bolt holes.
-
Specification