WO1996039561A1 - Procede et appareil pour prevenir et pour remedier aux fuites dans les systemes de reservoirs de stockage - Google Patents

Procede et appareil pour prevenir et pour remedier aux fuites dans les systemes de reservoirs de stockage Download PDF

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Publication number
WO1996039561A1
WO1996039561A1 PCT/US1995/006877 US9506877W WO9639561A1 WO 1996039561 A1 WO1996039561 A1 WO 1996039561A1 US 9506877 W US9506877 W US 9506877W WO 9639561 A1 WO9639561 A1 WO 9639561A1
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WO
WIPO (PCT)
Prior art keywords
flushing
tank
fluids
fluid
remediating
Prior art date
Application number
PCT/US1995/006877
Other languages
English (en)
Inventor
Morris E. Lewis
Original Assignee
Lewis Morris E
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lewis Morris E filed Critical Lewis Morris E
Priority to AU27637/95A priority Critical patent/AU2763795A/en
Priority to PCT/US1995/006877 priority patent/WO1996039561A1/fr
Publication of WO1996039561A1 publication Critical patent/WO1996039561A1/fr

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D90/00—Component parts, details or accessories for large containers
    • B65D90/22—Safety features
    • B65D90/24—Spillage-retaining means, e.g. recovery ponds

Definitions

  • the present invention relates generally to a storage tank leak prevention, remediation and repair system, consisting of a leak prevention module, a remediation module and a service/repair module for in situ remediation and repair, and more specifically, to a tank secondary containment system having a novel modular remediation and flushing fluid dispensing system with an above ground or below ground leak proof environmental enclosure.
  • Underground storage tanks are widely used commercially and in industry for bulk storage of liquids. These tanks are generally shipped from the manufacturer to the installation site fully assembled. As such, shipping of these assembled underground storage tanks is costly and cumbersome and requires special handling and heavy equipment. These tanks are often mistreated during shipping and handling, thus causing damage to the tank, which could progress to a serious leak. In addition, the stresses caused by settling of the medium in which the tank is installed or buried can cause leaks.
  • Prior secondary containment systems are widely used commercially and in industry for emergency containment of spilled or leaked hazardous liquids. Various methods are used for building these systems. The prior art shown by Patent No. 4,818,151 discloses a method which is used for building secondary containment systems.
  • An important feature of the present invention is the novel addition to state of the art systems, that will prevent leaks and will allow in place clean up of leaked or spilled product from above ground or underground storage tanks ("USTs”) and repair of these tanks without excavating the UST's from the ground.
  • USTs underground storage tanks
  • the present invention represents an improvement over the prior art by providing an efficient, economically built, and easily installed means to stop leaks, repair the tank and for remediation of the remaining leaked or spilled hazardous liquids for above ground or underground environments.
  • An underground storage tank system within a pit enclosure includes underground storage tanks, a flushing system for cleaning leaked product from within the pit enclosure, a monitoring well system positioned adjacent to the underground storage tank for detecting liquid leaks, and cable-mounted anchors to secure the underground storage tank body in place.
  • a related system is disclosed in U.S. Patent Application No. 07/919,732, filed July 31, 1992, and to issue June 6, 1995, as U.S. Patent No. 5,421,671. The disclosures of U.S. Patent Application Serial No. 07/919,732 are incorporated by reference herein.
  • Tanks were originally placed underground to provide safe storage for volatile liquid materials. For many years, when storage vessels failed and the liquids leaked into the ground, not much thought was given to environmental damage; however, this is not the case today.
  • Leak prevention components are located on the vent piping of the tank and when the flow of air pressure to the tank is obstructed, the tank will cease to leak. These components are locally or remotely operated. When the leak detection system detects a leak, they are activated, thus shutting off the leak. Additionally, when a vacuum pressure is introduced to the vent line, it will further serve to shut off the flow of the leak.
  • a modular remediation containment vessel is provided within the hole enclosure and includes remediation apparatus located adjacent to the tank for cleaning leaked product from the tank and from within the hole enclosure, a fluid recovery system positioned at the base and adjacent of the containment vessel and cable-mounted anchors to secure the above ground or underground storage tanks securely in place.
  • the remediation containment vessel is used to collect and contain those liquids which might leak from underground storage tanks and associated piping. This vessel is situated in a hole which is lined with a membrane and a system of drainage, monitoring and/observation wells and after the tank is installed, it is backfilled with a highly permeable material.
  • the hole liner must be extremely strong to properly function.
  • the remediation containment vessel membrane liner is made up of sheets of synthetic material, such as plastic, spread over the tank excavation walls and floor and in the pipe trench to provide containment if the primary container leaks.
  • a number of synthetic rubber and polymeric membrane liners can be used.
  • the most commonly used membranes for chemical or petroleum liquid storage are polyvinyl chloride, polyethylene, chlorinated polyethylene, chlorosulfinated polyethylene, butyl rubber or neoprene.
  • the liner In installing the liner, it is first cut to fit the tank hole. Next, it is spread over the tank hole and pipe runs. Joints are joined and sealed as by heat sealing using a hot wedge welder, extrusion fillet welding or an appropriate adhesive and special boots are installed around pipe risers and tank fittings. Lining the tank hole in this manner provides an effective long-term method of secondary containment of product, in the event that a leak should occur. Other materials such as concrete can be used to line the containment hole for an above ground tank.
  • a system for monitoring/observation wells and piping is next installed to detect and monitor leaks within the flushing containment vessel.
  • Most of the piping is 4-inch diameter PVC pipes.
  • the horizontal segment of the pipe is half slotted, wrapped with a mesh cloth to prevent backfill infiltration, and sloped towards the sump with a slope of approximately of 1/4 inch per foot.
  • At the corners of the secondary containment hole there are vertical pipes which are joined to the horizontal pipes by tee connectors. These pipes are also slotted and extend up to grade. They house the sensors and some of the wiring for the remote monitoring system.
  • One, and in some cases, two of the pipes are larger than 4-inches in diameter. These pipes extend to the base of the sump, and serve as wells that are used to pump or vacuum leaked product or excess water from the secondary containment hole if the need arises.
  • a bed of at least 12-inches of backfill is placed in the bottom of the hole and over the horizontal piping.
  • a single wall tank is installed.
  • a highly permeable backfill of pea gravel or crushed rock is used in the hole to allow leaking product or vapor to flow.
  • the remediation secondary containment is carefully placed on the bed of backfill and additional backfill is carefully placed around the tank as the hole is filled with this highly permeable backfill.
  • Sensors as known in the art, such as intermittent gas-phase, intermittent liquid- phase, continuous gas-phase or continuous liquid-phase, are used to detect leaks by detecting the liquid product or the vapors from the leaked product.
  • the sensors sense the leak and emit a detection signal which is then carried over the wires to the transmitter at the top of the well, or by way of other wires to a receiver/microprocessor system located in an adjacent building or structure. There the signal is further transmitted by radio wave, by satellite communications, by cellular telephone, or by regular telephone lines or by other means of communication to a remote monitoring station. There, it is received and processed by a monitoring computer system, and appropriate response measures are taken.
  • the remediation system includes an upper remediation system and/or a lower remediation system, which provide remediating fluid directed from above the tank, around the tank and below the tank.
  • the upper remediation system is suspended by straps or cables above the tank. Additionally, the lower remediation system is supported by straps or cables suspended from the tank.
  • Fluid flowing through dispensers in the upper remediation system remove or neutralize contaminants from the permeable material above and surrounding the tank.
  • Fluid flowing through dispensers in the lower remediation system remove or neutralize contaminants from the permeable material around the lower portions of the tank and below the tank.
  • Remediating fluid flows to the lowest portions of the enclosure hole or pit and is prevented from entering the ground by the liner in the pit.
  • the sump located at this lowest point is connected by piping which runs from and under the tank to one or more access wells which are accessible from above ground. Contaminants can be removed from the pit enclosure through these wells.
  • a cleaning or flushing agent can also be dispensed through the remediation system and removed from the sump.
  • Remediation has several additional aspects.
  • Third, the leaked liquid is removed from the permeable material or medium beneath the tank by inserting a spray nozzle in the hole in the tank and remediating fluid is sprayed into the permeable medium. This fluid and the leaked liquid carried by it flow to the sump for removal.
  • a flushing agent can also be sprayed into the tank and into the permeable medium.
  • the remediating fluid can be water, preferably hot, (hydroremediation), water borne microbes (bioremediation), chemicals (chemical remediation) or air (air sparging).
  • the threat of leaked product to the surrounding environment is substantially reduced or eliminated due to the fact that the product is contained within the leak proof secondary containment hole, thus allowing a response team to vacuum and store the remaining product from the tank.
  • the leaked product, which flows through the pea gravel, is vacuumed or pumped from the secondary containment hole by inserting a pipe or hose which is connected to a suitable pump and tank, into the large fluid recovery tube, down to the sump.
  • the tank When all leaked product is removed from the hole, the tank is repaired by a person entering and patching the cleaned tank or by remotely controlled means inserted into the cleaned tank and activated to patch the leak.
  • the remediation system is activated by connecting a hose to the connector of the tank flushing system, whereupon, a fluid is sprayed over and through the pea gravel, where it drains to the bottom of the hole, on to the sump, and is pumped out.
  • the system may be flushed with a suitable detergent in the tank flushing system, if needed.
  • the service unit contains various pumps, vacuum sources, power generation components, compressors, tanks, reservoirs, hoses, connectors, sensors, cameras, recorders and necessary data processing and control components.
  • the unit is designed to provide power, vacuum pressure, fluidic pressure, bioremediation means, air pressure and other remediation means as desired for servicing, remediating and repairing the tank systems.
  • the unit can be operated locally or remotely, as the situation dictates.
  • the service unit interfaces with the remediating unit by cabling, pipes, hoses, couplings and connectors.
  • Fig. 1 illustrates a side view of an installed underground storage tank situated in a remotely monitored and controlled self-flushing secondary containment system in accordance with the present invention
  • Fig. 2 illustrates a perspective overhead frontal/side view of installed underground storage tanks situated in a remotely monitored and controlled self-flushing secondary containment system with a leak signal from a recovery/monitoring well being transmitted by radio wave to the remediation monitoring receiver and micro controller in the service station;
  • Fig. 3 illustrates a frontal view of tanks showing a remediation system in place
  • Fig. 4 illustrates a partially fragmented view of the lower remediation unit of Fig. 3;
  • Fig. 5 illustrates a partially fragmented view of a tank with the cavity remediation unit dispensing remediation fluids through the leak cavity into permeable medium into which the product leaked;
  • Fig. 6 illustrates a partially fragmented view of a tank showing the tank inspection and cleaning unit
  • Fig. 7 is an elevation view of an above ground storage tank having a remediation system installed in a pit enclosure beneath the tank;
  • Fig. 8 is a top view of the remediation system of Fig. 7.
  • FIG. 1 there is shown an underground storage tank, and modular self flushing and self decontaminating flushing containment vessel mounted in a secondary containment hole enclosure 24 holding pea gravel or the like 6.
  • the tank 2 may store liquids such as fuel oil or gasoline and is filled through fill tube 2a.
  • Adjacent to the tank 2 in the secondary containment enclosure 24 is an upper remediation system 8 with a cap 10 thereon.
  • Upper remediation system 8 extends across enclosure 24 and is above and/or adjacent to tank 2.
  • a fluid recovery system 12 is connected at the bottom of the hole to the monitoring wells 4, having well caps 4a.
  • a manway or utility access receptacle 14 is supported on the tank 2 and operatively connected thereto.
  • the utility access receptacle 14 has a cap 17.
  • the manway or utility access receptacle 14 serves as an auxiliary tank for spills and constitutes an added safety factor for handling excess liquid overflow.
  • Deadman anchor weights 20 are positioned in the bottom area of the gravel-filled hole enclosure 24.
  • Suitable cables 22 are attached and swing upwardly and over the tank 2 and firmly grasping it in a secure manner.
  • the anchor arrangement 20, 22 with suitable weights add to the shock resistant environment of the gravel-filled hole enclosure 24.
  • a hard surface pavement 25 such as concrete with the respective cap openings, furnishes a cover for the hole enclosure 24.
  • a plastic liner 26 consisting of a resin resistant to corrosion by gasoline, other hydrocarbons, and chemicals, such as butyl rubber, vinyl ester or unsaturated polyester is inserted into the hole enclosure 24 during its construction.
  • Tanks were originally placed underground to provide safe storage for volatile liquid materials. For many years, when storage vessels failed and the liquids leaked into the ground, not much thought was given to environmental damage; however, this is not the case today.
  • secondary containment enclosure 24 serves as a flushing containment vessel used to collect and contain those liquids which might leak from the tank 2 and associated piping.
  • This system includes a hole which is lined with a membrane 26 and a system of monitoring and/observation wells 4 and recovery system 12 and after the tank is installed, it is backfilled with a highly permeable material 6.
  • the hole or pit has a slope S on the order of 1/4 to 1/2 inch per foot.
  • the flushing containment vessel membrane liner is essentially a sheet of polymeric material 26, made of the materials mentioned above, spread over the tank excavation walls and floor and in the pipe trench to provide containment if the primary container leaks.
  • a number of polymeric materials are used in the manufacturing of synthetic membrane liners.
  • the most commonly used membranes 26 for chemical or petroleum liquid storage are polyvinyl chloride, polyethylene, chlorinated polyethylene, chlorosulf ⁇ nated polyethylene, butyl rubber, or neoprene.
  • the liner is first cut to fit the tank hole. Next, it is spread throughout the tank hole and pipe runs. Joints are joined and sealed and special boots are installed around pipe risers and tank fittings. Lining the tank hole is this manner, will provide an effective long-term method of secondary containment of product, in the event that a leak should occur.
  • a concrete liner or a liner of similar materials can be used for above ground tanks.
  • a system of monitoring/observation wells 4 and piping 12 are next installed to detect and monitor leaks within the flushing containment vessel of Fig. 1.
  • Most of the piping is 4-inch diameter PVC pipes, installed as shown in Figs. 1, 2 and 3.
  • the horizontal segment of the pipe is half-slotted, wrapped with a mesh cloth to prevent backfill infiltration, and sloped towards the sump 44 with a slope on the order of 1/4 inch per foot (shown exaggerated in Fig. 2).
  • One, and in some cases, two of the pipes are larger than 4-inches in diameter. These pipes extend to the base of the sump 44, and serve as wells that are used to pump leaked product or excess water from the secondary containment hole if the need arises.
  • a highly permeable backfill of pea gravel or crushed rock 6 is used in the hole to allow leaking product or vapor to flow. But first, a bed of at least 6-inches of backfill is placed in the bottom of the hole and over the horizontal piping. The tank 2 is carefully placed on the bed of backfill 6 and additional backfill is carefully placed around to tank as the hole is filled with this highly permeable backfill.
  • Sensors 18, of intermittent gas-phase, intermittent liquid phase, continuous gas phase, and continuous liquid phase type, as known in the art, are used to detect leaks by detecting product or the vapors from the leaked product.
  • Fig. 2 shows the transmission of a detected leak signal.
  • the sensors 18 (Fig. 1) sense the leak and emit a detection signal which is then carried over the wires to the transmitter 28 at the top of the well, or by other wires 36 to the receiver/microprocessor system 38 located in an adjacent building. There the signal is further transmitted by radio wave 30, by satellite communications 34, by cellular telephone, or by regular telephone lines 32 or by other means of communications to the remote monitoring station 40. There, it is received and processes by the monitoring computer system 42, and appropriate response measures are taken.
  • the leaked product poses no threat to the surrounding environment due to the fact that the product is contained within the leak proof secondary containment hole 24, thus, allowing the response team to vacuum and store the remaining product from the tank 2.
  • the leaked product which flows tiirough the pea gravel 6, is vacuumed or pumped from the secondary containment hole by inserting a hose which is connected to a suitable vacuum source or pump and tank, into the large fluid recovery tube 4, down to the sump 44.
  • the tank 2 is repaired by a person entering the cleaned tank and patching the leak or by inserting remotely controlled means and patching the leak.
  • the self-flushing system is activated by connecting a hose to the connector of the upper remediation system 8, having dispensers 16, whereupon, a fluid for decontamination, bio-remediation and/or flushing is sprayed over the tank 2 and through the pea gravel 6, where it drains by the force of gravity to the bottom of the hole, on to the sump 44, and is pumped out.
  • the system is then flushed with a suitable detergent in the same manner as described above.
  • a lower remediation conduit 47 extends from a lower remediation system connector 49 on to the lower remediator 46 and dispensers 48.
  • Upper remediation system 8 is held in place and supported by cables or suspension 8X.
  • Fig. 3 illustrates a frontal view of tanks showing the remediation system in place and shows the relationship and connection of the upper and lower remediation systems relative to the tank 2 and the fluid recovery system.
  • Fig. 4 illustrates a fragmented sectional view of the lower remediator unit 46 showing the cap 10 to the remediator unit removed and a hose 66 from the service unit connected to the remediator unit hose connector 8a.
  • the control unit 8b along with the manifold 8c routes the remediating fluids to the desired feeder tube on to the dispenser 48, where the remediating fluid is sprayed on the tank or the pea gravel within the secondary containment environment.
  • a similar arrangement (not shown) is employed for the upper remediation system.
  • Fig. 5 illustrates a partially fragmented view of a tank with a cavity remediation dispensing unit 50 dispensing remediation fluids R through spray nozzle 53 through the leak cavity 52 into the leaked product.
  • the remediation fluids are pumped under pressure through the leak cavity into the pea gravel, where it will clean the leaked product from the pea gravel and recovery unit.
  • the remediation system includes an upper remediation system and a lower remediation system, which provide remediating fluid directed from above the tank, around the tank and below the tank.
  • the upper remediation system is suspended by straps or cables above the tank.
  • the lower remediation system is supported by straps or cables suspended from the tank.
  • Fluid flowing through dispensers in the upper remediation system remove or neutralize contaminants from the permeable material above and surrounding the tank.
  • Fluid flowing through dispensers in the lower remediation system remove or neutralize contaminants from the permeable material around the lower portions of the tank and below the tank. Remediating fluid flows to the lowest portions of the enclosure hole or pit and is prevented from entering the ground by the liner in the pit.
  • the sump located at this lowest point is connected by piping which runs from and under the tank to one or more access wells which are accessible from above ground. Contaminants can be removed from the pit enclosure through these wells. In addition, a cleaning or flushing agent can also be dispensed through the remediation system and removed from the sump. Remediation has several additional aspects. First, the leakage from the tank is reduced or minimized by depressurizing the tank. This is accomplished by shutting a valve in the tank vent. Second, after the tank is drained by pumping out the remaining liquid in the tank, a remediation fluid is sprayed from a spray nozzle, located in the top of the tank, into the tank to eliminate vapors and otherwise clean out the inside of the tank.
  • the leaked liquid is removed from the permeable material or medium beneath the tank by inserting a spray nozzle in the hole in the tank and remediating fluid is sprayed into the permeable medium.
  • This fluid and the leaked liquid carried by it flow underground to the sump for removal.
  • a flushing agent can also be sprayed into the tank and into the permeable medium.
  • the remediating fluid can be hot water (hydroremediation), water borne microbes (bioremediation), chemicals (chemical remediation) or air (air sparging). Hydro-remediation is used to remediate volatile, or low viscosity hazardous liquids such as gasoline.
  • hot water is the primary remediating agent.
  • the remediation system is connected to a hot water source and activated by connecting to the connector of the tank remediation dispenser.
  • the hydro-remediation fluid is sprayed under suitable pressure over and through the pea gravel. It flows over and remediates the surfaces of the contaminated pea gravel and UST components.
  • the hydro-remediating fluids and hazardous liquids flow to the bottom of the hole, into the system recovery piping, on to the sump, whereupon, they are pumped out. The system may then be flushed as needed with a suitable cleaning agent.
  • Bio-remediating is used to remediate a wide range of hazardous liquids.
  • Cultured microbes have been developed and are commonly used to remediate all types of hazardous liquids, such as gasoline and other petroleum products, and chemicals.
  • waterborne microbes are the primary remediating agent.
  • the pea gravel and other contaminated surfaces in the secondary containment vessel are turned into a bio-reactor.
  • the microbes consume and metabolize the hazardous liquids, resulting in residue of carbon dioxide and water. After this is completed, warm water is sprayed over the surfaces of the contaminated pea gravel and UST components.
  • the remediated fluids flow on to the bottom of the hole, into the system recovery piping, on to the sump, whereupon, they are pumped out.
  • Chemical remediation is used to remediate less volatile, or high viscosity hazardous liquids such as heavy oil, chemicals, etc.
  • suitable chemicals which will dissolve or emulsify the leaking liquid are the primary remediating agent.
  • the remediation system is connected to the chemical source and activated by way of connecting to the connector of the tank remediation dispenser.
  • the chemical remediation fluid is sprayed under suitable pressure over and through the pea gravel. It flows over and remediates the surfaces of the contaminated pea gravel and UST components.
  • the chemical remediating fluids and hazardous liquids flow on to the bottom of the hole, into the system recovery piping, on to the sump, whereupon, it is pumped out.
  • the fluids are pumped to a suitable container and disposed of in an approved manner.
  • Air sparging is used to remediate volatile or low viscosity hazardous liquids such as gasoline.
  • a rapid air flow is the primary remediating agent.
  • the remediation system is connected to a compressed air source and activated by connecting to the connector of the tank remediation dispenser.
  • the pressurized air is forced under suitable pressure over and through the pea gravel. It flows over and remediates the surfaces of the contaminated pea gravel and UST components.
  • the pressurized air and hazardous liquid vapor flow on to the bottom of the hole, into the system recovery piping, on to the sump, whereupon, they are vacuumed out.
  • the system may then be flushed as needed with a suitable cleaning agent.
  • Fig. 6 illustrates a partially fragmented view of a tank showing the tank inspection and cleaning unit inside of the tank. Inspection of the tank is accomplished by way of the unit spotlight 54 illuminating the inside of the tank, the unit sensor 56 (for vapors or the like) and the maintenance unit operator viewing the inside of the tank 2 with the system camera 58. Cleaning of the tank is accomplished with the unit sprayer 60 dispensing cleaning agents and fluids under pressure into the inside of the tank, whereupon the agents or fluids clean the tank and are vacuumed by vacuum aerator 62 from the tank.
  • Fig. 7 shows an elevation view of an above ground tank 102 having a remediation system 108 with dispensers 116.
  • Fig. 8 shows a top view of the remediation system 108.
  • Remediation system 108 is installed in a pit enclosure 124 having liner 126 and filled with pea gravel 106.
  • the pit enclosure is connected by piping 112 to sump 144 which is connected to well 104.
  • the operation of the remediation system 108 is similar to that described above for the system used with underground tanks.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Hydrology & Water Resources (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

L'invention vise à remédier aux fuites de fluides d'un réservoir de stockage (2) disposé de manière à communiquer avec une cavité souterraine (24) garnie d'un revêtement imperméable (26) et ayant un milieu perméable (6) entre le réservoir et le revêtement. Le procédé consiste à recueillir les fluides en un point de collecte (44) pour recueillir et évacuer le fluide échappé. Le point de collecte fonctionne par gravité. Un ou plusieurs fluides circulent autour du réservoir pour évacuer le fluide échappé, et arriver par le milieu perméable vers le point de collecte.
PCT/US1995/006877 1995-06-05 1995-06-05 Procede et appareil pour prevenir et pour remedier aux fuites dans les systemes de reservoirs de stockage WO1996039561A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU27637/95A AU2763795A (en) 1995-06-05 1995-06-05 Method and apparatus for leak prevention and remediation in storage tank systems
PCT/US1995/006877 WO1996039561A1 (fr) 1995-06-05 1995-06-05 Procede et appareil pour prevenir et pour remedier aux fuites dans les systemes de reservoirs de stockage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US1995/006877 WO1996039561A1 (fr) 1995-06-05 1995-06-05 Procede et appareil pour prevenir et pour remedier aux fuites dans les systemes de reservoirs de stockage

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0937659A1 (fr) * 1998-02-21 1999-08-25 Wolfgang Maichen Système pour sceller des chambres
CN107555009A (zh) * 2017-08-31 2018-01-09 太仓大田铭博包装容器有限公司 一种防泄漏化工原料桶及其泄漏处理方法
EP3981641A1 (fr) * 2020-10-08 2022-04-13 Dr.Ing. h.c. F. Porsche Aktiengesellschaft Ensemble réservoir de refroidissement pour un refroidissement de liquide d'une station de charge pour véhicules électriques

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4430021A (en) * 1981-11-23 1984-02-07 Ecological Professional Industries, Inc. Secure chemical waste landfill
US4464081A (en) * 1983-06-29 1984-08-07 Rollins Environmental Services, Inc. Process and structure for storing and isolating hazardous waste
US4787772A (en) * 1987-06-26 1988-11-29 Eljen Corporation Device for detecting leaks in underground fluid tanks
US5030033A (en) * 1989-09-12 1991-07-09 Heintzelman Stephen D Material containment system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4430021A (en) * 1981-11-23 1984-02-07 Ecological Professional Industries, Inc. Secure chemical waste landfill
US4464081A (en) * 1983-06-29 1984-08-07 Rollins Environmental Services, Inc. Process and structure for storing and isolating hazardous waste
US4787772A (en) * 1987-06-26 1988-11-29 Eljen Corporation Device for detecting leaks in underground fluid tanks
US5030033A (en) * 1989-09-12 1991-07-09 Heintzelman Stephen D Material containment system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0937659A1 (fr) * 1998-02-21 1999-08-25 Wolfgang Maichen Système pour sceller des chambres
CN107555009A (zh) * 2017-08-31 2018-01-09 太仓大田铭博包装容器有限公司 一种防泄漏化工原料桶及其泄漏处理方法
CN107555009B (zh) * 2017-08-31 2023-04-07 太仓大田铭博包装容器有限公司 一种防泄漏化工原料桶及其泄漏处理方法
EP3981641A1 (fr) * 2020-10-08 2022-04-13 Dr.Ing. h.c. F. Porsche Aktiengesellschaft Ensemble réservoir de refroidissement pour un refroidissement de liquide d'une station de charge pour véhicules électriques

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