[특허]System and method for detecting leaks in underground storage tank

[미국특허] System and method for detecting leaks in underground storage tank 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B65G-005/00 G01M-003/04
출원번호	US-0657225 (2000-09-07)
발명자 / 주소	Berg, Sr., Robin L. Burwell, John Kelber, Richard J.
출원인 / 주소	Xerxes Corporation
대리인 / 주소	Piper Rudnick, LLP
인용정보	피인용 횟수 : 12 인용 특허 : 21

초록 ▼

A double walled storage tank includes an outer wall, an inner wall, a plurality of ribs disposed between the inner and outer walls, and a plurality of annular spaces between the ribs. The annular space between each pair of ribs is connected to other annular spaces only at the top of the tank. When a leak occurs in either the outer or inner wall, the annular space corresponding to the leak will at least partially drain while the other annular spaces will remain full. Thus, the leak location can be determined by simply examining the annular spaces between pairs of ribs.

대표청구항 ▼

1. A double walled storage tank comprising: an inner wall; an outer wall in a closely spaced adjacent relationship thereto; and a plurality of ribs adjacent to the inner wall and the outer wall such that the ribs, the inner wall and the outer wall form a plurality of annular spaces, each of the ribs having at least one passage formed therethrough; wherein all of the passages are located at approximately a top of the tank and the annular spaces are filled with leak detection fluid and are in fluid communication only through the passages, so as to determine the approximate location of the leak in the annular spaces. 2. The tank according to claim 1, wherein each of the ribs has a plurality of passages therethrough. 3. The tank according to claim 1, wherein each of the ribs has a single passage therethrough. 4. The tank of claim 1, further comprising a monitoring tube in fluid communication with on of the annular spaces at an end of the tank. 5. The tank of claim 4, further comprising an alarm system for monitoring the level of fluid in the monitoring tube and sounding an alarm when the level changes by more than a preselected amount. 6. The tank of claim 1, wherein the ribs are attached to the inner wall and the outer wall. 7. The tank of claim 1, further comprising at least one sensor disposed within each of the annular spaces, the sensor being able to determine the presence of liquid in the annular space. 8. A method for determining the approximate location of a leak in an underground storage tank, the method comprising the steps of: providing an underground storage tank having an inner wall, an outer wall in a closely spaced adjacent relationship to the inner wall, and a plurality of ribs disposed between and adjacent to the inner and the outer wall such that a plurality of annular spaces are formed, each of the ribs having at least one passage therethrough, all of the passages being located at approximately a top of the tank, the tank having a monitoring tube in direct fluid communication with one of the annular spaces at an end of the tank; introducing an amount of leak detection fluid into the monitoring tube to fill all of the annular spaces; detecting a leak; and determining whether and which of at least one of the annular spaces is approximately filled with the leak detection fluid. 9. The method of claim 8, wherein the leak detection fluid is introduced before the leak is detected. 10. The method of claim 9, wherein the leak detection fluid is introduced before the tank is installed. 11. The method of claim 9, wherein the leak detection fluid is introduced after the tank is installed. 12. The method of claim 8, wherein the leak detection fluid is introduced after the leak is detected. 13. The method of claim 8, wherein the determining step is performed by exposing and tapping on successive portions of the top of the tank corresponding to the successive annular spaces, starting with the annular space in direct fluid communication with the monitoring tube. 14. The method of claim 8, wherein the top of the tank is examined by looking through non-opaque portions of the top of the tank to determine the leak detection fluid level. 15. The method of claim 8, wherein the determining step is performed by examining sensors associated with each of the annular spaces that indicate the presence of leak detection fluids.

이 특허에 인용된 특허 (21) 인용/피인용 타임라인 분석

Brown Arthur R. (Warrenville IL) Miller David C. (Downers Grove IL), Apparatus for establishing a clean interface in a leak detector.
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Hendershot John A. (Shawnee OK), Double bladder fluid containment system.
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Sharp Bruce R. (4090 Rosehill Ave. Cincinnati OH 45229), Double wall ribbed storage tanks.
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Sharp Bruce R. (22375 Edgewater Dr. ; Unit 241 Charlotte Harbor FL 33980), Double walled fibrous reinforced resinous storage tanks with common rib supports.
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Sharp Bruce R. (22375 Edgewater Dr. Unit 241 Charlotte Harbor FL 33980), Double walled ribbed storage tank systems.
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Sharp Bruce R. (4090 Rose Hill Ave. Cincinnati OH 45229), Double walled storage tanks with common rib supports.
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Berg Robin (Hudson WI) Burwell John (Eagan MN) Correll Dave (Northridgeville OH), Double walled underground storage tank.
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Pugnale, Peter J.; Clark, John M.; Penland, William R., Double-wall underground container for storing liquids and leak detecting means therefor.
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Pugnale Peter J. (The Woodlands TX) Mance Andrew A. (Toledo OH), Double-wall underground tank and method of making.
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Berg Robin ; Burwell John ; Olson Neil ; Smith John, Female-molded underground storage tank and method of making.
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Sharp Bruce R. (4090 Rose Hill Ave. Cincinnati OH 45229), Fibrous reinforced resinous storage tanks with strengthened walls.
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Spring G. Everett (Makawao HI) Keller ; Jr. Douglas V. (Lafayette NY), Leak detection with non-toxic liquids.
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Reese R. Allan (Seattle WA) Grainawi Lorri J. (Palatine IL), Lightweight double wall storage tank.
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Gelin Robert J. (Newark OH), Liquid confinement leak detection system.
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Kauffman Donn K. (Daphney AL), Multi-walled panels.
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Gelin Robert J. (Newark OH), Storage tank and method of making a storage tank.
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Sharp Bruce R. (126 Leland Way Marco Island FL 33937), Storage tank system with independent monitoring of ribs and tank wall.
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Berg Robin (Hudson WI) Mohns Lawrence (Media PA) Oswald Richard (Elverson PA), System for underground storage and delivery of liquid product, and recovery of leakage.
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Berg Robin, Underground storage tank.
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Berg Robin (Hudson WI) Burwell John (Eagan MN), Underground storage tank of corrosion-resistant materials with internal steel rib.
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Berg Robin (Hudson WI) Baumgartner Mark (Farmington MN), Water-tight riser for underground storage tank manway.
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이 특허를 인용한 특허 (12) 인용/피인용 타임라인 분석

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Burwell,John; Zais,Michael G.; Sanchez,Roberto, Double walled containment sumps.
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Burwell,John, Form for street box in underground storage tank installation.
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Yang, Young Myung; Yoon, Ihn Soo; Yang, Young Chul; Kim, Young Kyun, Liquid natural gas tank with wrinkled portion and spaced layers and vehicle with the same.
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Golding, Randy D.; Rabb, David; Huey, Ken, Method and apparatus for leak detection.
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Geurtz, Heinz-Jürgen; Essig, Ulrich, Process for producing a fuel tank with underride protector.
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Huang, Xiaodong, Safety environmental protection buried oil tank.
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Kram,Mark; Laverman,Leroy, System and method for optical detection of petroleum and other products in an environment.
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Wokas, Albert L., Tank for service stations.
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Manger, Peter E.; Kesterman, James E.; McCann, Michael T.; Miller, Tod W., Testable sump apparatus.
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[미국특허] System and method for detecting leaks in underground storage tank 원문보기

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[미국특허] System and method for detecting leaks in underground storage tank 원문보기

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