Contaminant containment system in a fueling environment
First Claim
Patent Images
1. An underground storage tank, comprising:
- a fuel containment section; and
a contaminant chamber fluidly isolated from said fuel containment section and adapted to receive contaminants from fuel dispensers in a fueling environment.
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Abstract
A fueling environment includes a contaminant collection chamber positioned in an underground fuel storage tank. Sumps in the fuel dispensers and low point sumps in the piping network drain captured fuel and contaminants to the contaminant chamber by methods such as gravity. A float sensor monitors levels within the contaminant chamber for detecting leaks and/or scheduling service calls. An oil-water separator may be used to economize the use of the contaminant chamber. Further, the underground storage tank may be positioned in various locations in the fueling environment and accommodate a plurality of different types of fuels.
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Citations
33 Claims
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1. An underground storage tank, comprising:
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a fuel containment section; and
a contaminant chamber fluidly isolated from said fuel containment section and adapted to receive contaminants from fuel dispensers in a fueling environment. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A fuel dispenser, comprising:
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a sump; and
a drainage pipe draining said sump to an underground storage tank for containment of contaminants captured within the sump.
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14. A fueling environment, comprising:
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at least one fuel dispenser comprising a sump for capturing leaking fuel and contaminants therein;
a drainage system adapted to drain the sumps in the at least one fuel dispenser; and
an underground storage tank, comprising;
a fuel containment section; and
a contaminant chamber fluidly isolated from said fuel containment section and adapted to receive contaminants from the drainage system. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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21. A method of handling contaminants in a fueling environment, comprising:
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collecting contaminants in a fuel dispenser sump; and
draining the fuel dispenser sump to a contaminant chamber within an underground storage tank. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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Specification