EP3135391B1 - A method of cleaning the bottom interstitial space and/or wall interstitial space of a storage tank - Google Patents
A method of cleaning the bottom interstitial space and/or wall interstitial space of a storage tank Download PDFInfo
- Publication number
- EP3135391B1 EP3135391B1 EP16184057.4A EP16184057A EP3135391B1 EP 3135391 B1 EP3135391 B1 EP 3135391B1 EP 16184057 A EP16184057 A EP 16184057A EP 3135391 B1 EP3135391 B1 EP 3135391B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- interstitial space
- storage tank
- wall
- space
- inspection
- Prior art date
- Legal status (The legal status 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 status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims description 63
- 238000004140 cleaning Methods 0.000 title claims description 50
- 238000007689 inspection Methods 0.000 claims description 43
- 239000007789 gas Substances 0.000 claims description 38
- 239000002360 explosive Substances 0.000 claims description 36
- 238000012544 monitoring process Methods 0.000 claims description 24
- 238000007789 sealing Methods 0.000 claims description 24
- 239000012530 fluid Substances 0.000 claims description 22
- 230000008569 process Effects 0.000 claims description 21
- 239000007788 liquid Substances 0.000 claims description 15
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 12
- 238000009434 installation Methods 0.000 claims description 11
- 230000007935 neutral effect Effects 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 7
- 239000001301 oxygen Substances 0.000 claims description 7
- 229910052760 oxygen Inorganic materials 0.000 claims description 7
- 150000001720 carbohydrates Chemical class 0.000 claims description 6
- 235000014633 carbohydrates Nutrition 0.000 claims description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims description 6
- 238000005259 measurement Methods 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 239000002341 toxic gas Substances 0.000 claims description 4
- 238000005406 washing Methods 0.000 claims description 4
- 230000007797 corrosion Effects 0.000 claims description 3
- 238000005260 corrosion Methods 0.000 claims description 3
- 239000008246 gaseous mixture Substances 0.000 claims description 3
- 239000001257 hydrogen Substances 0.000 claims description 3
- 229910052739 hydrogen Inorganic materials 0.000 claims description 3
- 239000003112 inhibitor Substances 0.000 claims description 3
- 229910001172 neodymium magnet Inorganic materials 0.000 claims description 3
- 239000004094 surface-active agent Substances 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims 1
- 239000000463 material Substances 0.000 description 15
- 239000013049 sediment Substances 0.000 description 9
- 239000003518 caustics Substances 0.000 description 7
- 231100000331 toxic Toxicity 0.000 description 7
- 230000002588 toxic effect Effects 0.000 description 7
- 230000001681 protective effect Effects 0.000 description 6
- 238000005553 drilling Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000010779 crude oil Substances 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000003673 groundwater Substances 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 2
- 230000000977 initiatory effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 235000014787 Vitis vinifera Nutrition 0.000 description 1
- 240000006365 Vitis vinifera Species 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/08—Cleaning containers, e.g. tanks
- B08B9/093—Cleaning containers, e.g. tanks by the force of jets or sprays
-
- 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
- B65D90/0093—Devices for cleaning the internal surfaces of the container and forming part of the container
Definitions
- the subject matter of the invention relates to a method of cleaning the bottom interstitial space and/or wall interstitial space of a storage tank designed in particular for the storage of liquid flammable, toxic and caustic materials.
- Storage tanks both underground and above ground storage tanks, should meet requirements concerning non-pressurized and low-pressure tanks designed in particular for the storage of liquid flammable, toxic and caustic materials. Such tanks must meet strict safety standards; namely, they must be, inter alia, equipped with monitoring and measurement devices signalling leakages of substances to the ground and ground waters. Moreover, rigorous safety requirements compel both the manufacturers and users of storage tanks to produce and use tanks having bottom interstitial spaces and/or wall interstitial spaces.
- Such spaces should basically prevent penetration of liquid flammable, toxic and caustic materials directly to the ground and ground waters. They should thus form an additional protective space located at the bottom of a storage tank in the case of a bottom interstitial space, and an additional protective space located on the walls of a storage tank in the case of a wall interstitial space. These spaces are made during the construction of a storage tank or are added in the course of its operation. They are most frequently delimited by a secondary steel bottom or a secondary laminated bottom made of 3D mats and suitable resins.
- storage tanks with a bottom interstitial space and/or wall interstitial space are subject to damage due to sealing failure (unsealing) of said spaces. This may be caused by improper operation or by operational wear of the tank's parts when a sealing failure of the bottom interstitial space and/or wall interstitial space occurs a result of which a product in the form of a liquid inflammable, toxic and/or caustic material penetrates into those spaces.
- the process consists in pumping out sediments from technological and clean-out hatches through conduits forced into a tank for forcing in sediments. If it is not possible to take off the covers of hatches due to remaining pumpable and unpumpable sediments, starting removing residuals from the tank is performed through open technological hatches of the main tank. After pumping out sediments to a level that makes it possible to fully open technological and clean-out hatches cleaning works are started using the addition of water (in the amount not greater than 2% of the volume of sediments) and polymers which fluidize the residuals of liquid flammable materials to the state allowing their easy pumping and which are added before and while sediments move towards the vicinity of suction hosts of screw pumps.
- the system of automatic cleaning is much more effective and safe for the health of workers.
- An essential feature of the system is that the process is performed in a closed-circuit system without the necessity to expose the product in open containers outside a storage tank, which significantly reduces its adverse effect on the natural environment.
- U.S. Patent Application No. US 5 096 087 A which is considered as the closest prior art regarding claim 1, discloses a double containment and leak detection apparatus and method including a tank having a bottom and a surrounding shell, with a containment baffle above the bottom and a leak detector in a containment space between the containment baffle and the tank bottom.
- the containment baffle includes a baffle plate sealingly joined to the interior of the shell to form a sealed containment space between the containment baffle and the bottom.
- the leak detector is installed in the containment space to detect the presence of stored material held in the tank in the event such material leaks into the containment space.
- the leak detection means is connected, through a leak-proof access, to means external to the tank for responding to such leaks of stored material so detected inside the containment space.
- the invention further includes a primary containment, made of liner material, located inside the tank above the containment baffle and within the shell, capable of containing such stored material.
- a suitable flushing mechanism is provided so as to remove any leaked fluids from the containment space.
- European Patent Application No. EP 1 316 516 A1 which also discloses a similar method to clean and refill the intermediate space between the outer and inner shell of a double-shelled container or pipework.
- the method comprises steps: fitting a service assembly onto the bottom of the container which comprises couplers for the drilling assembly couplers for the service pipe and couplers to access the intermediate space, connecting a service pipe onto the service assembly, fitting a drilling assembly of the service assembly onto the coupler, with which the drilling depth on the inner shell is adjusted respectively and with which a hole is drilled on the inner shell through joint, removing the aged liquid mixture and introducing a new liquid mixture or protective gas through the service pipe and joint into the intermediate space.
- the claimed method of the invention differs from this known prior art solutions in that the emptied storage space of the storage tank is supplied in a continuous manner with fresh air through at least one inspection hatch thus ventilating the storage space of the storage tank by means of ventilators, and consisting in the continuous monitoring of the storage space of the storage tank by means of sensors measuring the level of an explosive atmosphere and determining the concentration of carbohydrates as percentage with respect to the lower and upper explosive limit of gases and oxygen content in the storage space of the storage tank, as well as the minimum admissible concentration of toxic gases in the storage space of the storage tank.
- the concentration of explosive gases in the bottom interstitial space and/or wall interstitial space of the storage tank is measured in a continuous manner, and in the case the measurement is beyond the admissible range, the process of cleaning the bottom interstitial space and/or wall interstitial space of the storage tank is repeated until the concentration of explosive gases reaches the lower explosive limit, in accordance with claim 1.
- the subject matter of the present invention relates to providing a method of cleaning the bottom interstitial space and/or wall interstitial space of a storage tank, designed in particular for the storage of liquid inflammable, toxic and caustic materials, which has been damaged due to sealing failure in the bottom interstitial space and/or wall interstitial space.
- the method must, on the one hand, ensure high efficiency of the whole cleaning process, and on the other, guarantee high accuracy while maintaining strict safety standards.
- the present invention provides a method of cleaning the bottom interstitial space and/or wall interstitial space of a storage tank in the event of a sealing failure in the bottom interstitial space and/or wall interstitial space of a storage tank, which method consist in that the emptied storage space of a storage tank is supplied in a continuous manner with fresh air through at least one inspection hatch thus ventilating the storage space of the storage tank by means of ventilators, the cleaning process being performed with the continuous monitoring of the storage space of the storage tank by means of sensors measuring the level of an explosive atmosphere and determining the concentration of carbohydrates as percentage with respect to the lower and upper explosive limit of gases and oxygen content in the storage space of the storage tank, as well as the minimum admissible concentration of toxic gases in the storage space of the storage tank.
- the method is characterized in that a fluid is sucked in, in the case of low-pressure function of bottom interstitial space and/or wall interstitial space, or forced in, in the case of high-pressure function of bottom interstitial space and/or wall interstitial space, into the bottom interstitial space and/or wall interstitial space, and subsequently, after filling the bottom interstitial space and/or wall interstitial space of a storage tank with the fluid, the sucked-in or forced-in fluid, respectively, which has been mixed with the product remaining in the bottom interstitial space and/or wall interstitial space, which product previously penetrated into the bottom interstitial space and/or wall interstitial space of the storage tank due to sealing failure, is respectively sucked off or drained from the bottom interstitial space and/or wall interstitial space.
- the fluid being, respectively, sucked into or forced into the bottom interstitial space and/or wall interstitial space of the storage tank is water or water with washing agents in the form of surfactants that react with the product, and corrosion inhibitors or reduced water vapour from a technological installation or a steam generator.
- the fluid is sucked, through at least one inspection stub pipe of the system monitoring leakages, into the bottom interstitial space and/or wall interstitial space of the storage tank by means of a pump, in particular a low-pressure pneumatic diaphragm pump or other Ex pump allowing suitable selection of low pressure within the rage from 0 to -1 bar.
- a pump in particular a low-pressure pneumatic diaphragm pump or other Ex pump allowing suitable selection of low pressure within the rage from 0 to -1 bar.
- the liquid is forced, through at least one inspection stub pipe of the system monitoring leakages, into the bottom interstitial space and/or wall interstitial space of the storage tank by means of a pressure installation with a suitable pressure reducing valve allowing suitable selection of pressure within the rage from 0 to 1 bar.
- the fluid that has been mixed with the product remaining in the bottom interstitial space and/or wall interstitial space is sucked out through at least one inspection stub pipe of the system monitoring leakages from the bottom interstitial space and/or wall interstitial space of the storage tank by means of a pump, in particular a low-pressure pneumatic diaphragm pump or another Ex pump allowing suitable selection of low pressure within the rage from 0 to -1 bar.
- a pump in particular a low-pressure pneumatic diaphragm pump or another Ex pump allowing suitable selection of low pressure within the rage from 0 to -1 bar.
- the fluid that has been mixed with the product remaining in the bottom interstitial space and/or wall interstitial space is drained through at least one inspection stub pipe of the system monitoring leakages from the bottom interstitial space and/or wall interstitial space of the storage tank by means of a pressure installation with a suitable pressure reducing valve allowing suitable selection of pressure within the rage from 0 to 1 bar.
- neutral gas is forced into the bottom interstitial space and/or wall interstitial space of the storage tank through at least one inspection stub pipe of the system monitoring leakages by means of gas regulators allowing suitable selection of pressure within the range from 0 to 1 bar, from bottle bundles or a cryogenic tank or a nitrogen generator or a technological installation.
- nitrogen is used as a neutral gas to eliminate the explosive atmosphere inside the bottom interstitial space and/or wall interstitial space of the storage tank.
- the process of cleaning the bottom interstitial space and/or wall interstitial space of the storage tank is repeated until the concentration of explosive gases reaches the lower explosive limit which is below 10% for all types of carbohydrate mixtures, below 4% for gaseous hydrogen, and oxygen content is below 5% for all types of gaseous mixtures.
- inspection holes having 1 mm to 50 mm in diameter are drilled in the upper surface delimiting the bottom interstitial space and/or in the inner surfaces of walls delimiting the wall interstitial space in the amount from several to several tens depending of the size of the area of the bottom interstitial space and/or wall interstitial space of the storage tank, and/or the number of inspection stub pipes of the system monitoring leakages in the bottom interstitial space and/or wall interstitial space of the storage tank and/or depending on the size of sections into which the bottom interstitial space and/or the wall interstitial space of the storage tank has been divided.
- the concentration of explosive gases in the bottom interstitial space and/or wall interstitial space is measured by means of gas meters on at least one inspection stub pipe of the system monitoring leakages and/or in inspection holes in the upper surface delimiting the bottom interstitial space or in inspection holes in the inner surfaces of walls delimiting the wall interstitial space made for proper cleaning of the bottom interstitial space and/or wall interstitial space of the storage tank.
- inspection holes are plugged with magnet plugs with rubber gaskets providing additional sealing around the inspection holes in order to lock the outflow of a neutral gas into the storage space of the storage tank.
- neodymium magnet plugs are used as magnet plugs.
- the solution presented according to the aspect proposed above ensures a suitable method of cleaning the bottom interstitial space and/or wall interstitial space which consists inter alia in more efficient, more effective and more accurate cleaning of the bottom interstitial space and/or wall interstitial space in accordance with strict safety standards.
- this method is very universal and may be used with various storage tanks, in particular those in the form of both vertical and horizontal cylinders, small and large tanks. Thus, the method may be used with many different storage tanks.
- the proposed method according to the invention may also be used in the case of both non-pressurized tanks and low-pressure ones as wells as many other tanks.
- FIG. 1 presents a cross-section of a storage tank 100 which depicts, in a simplified way, a method of cleaning the bottom interstitial space 110 and wall interstitial space 120 of a storage tank 100.
- the tank has the shape of a cylinder with a vertical axis and is designed for the storage of a product 150 in the form of a liquid flammable material, which is crude oil in the present case.
- the storage tank 100 is also equipped with a system monitoring leakages in the bottom interstitial space 110 and wall interstitial space 120 to facilitate detection of damage, in particular sealing failure of those spaces.
- Such sealing failure causes passage of a product 150 - which is crude oil in the present case - from the storage space 195 of a storage tank 100 to the bottom interstitial space 110 of the storage tank 100.
- the bottom interstitial space 110 is a space located at the bottom of the storage tank between the secondary bottom 105, laminated and made of 3D mats and epoxy raisins, and the primary bottom 115 made of steel.
- the bottom interstitial space 110 and the wall interstitial space 120 of a storage tank 100 that has been damaged due to sealing failure of these spaces first the storage space 195 is cleared of a product 150 remaining in the storage tank 100, and then the storage space 195 of the storage tank 100 is subjected to cleaning, washing and vaporising by methods known from the state of the art.
- ventilators 160 which are located at the main shell 180 of the storage tank 100.
- a special air sleeve is made between the protective shell and the main shell 180 so as to limit loss of fresh air forced into the storage tank 100.
- the whole process of cleaning preceding the initiation of the proper process of cleaning the unsealed bottom interstitial space 110 and wall interstitial space 120 is performed with the continuous monitoring of the storage space 195 of the storage tank 100 by means of sensors (not shown) measuring the level of explosive atmosphere and determining the concentration of hydrocarbons as percentage relative to the lower and upper explosive limit of gases and oxygen content in the storage space 195 of the storage tank 100, and the lower admissible concentration of toxic gases in the storage space 195 of the storage tank 100.
- the operations defined above are performed in order to enable inner inspection of the storage tank 100, i.e. of the storage space 195, by relevant services including an authorised employee of the Office of Technical Inspection (UDT) and other competent persons who will verify the condition of the bottom interstitial space 110 and wall interstitial space 120 and determine whether a permission to operate the storage tank 100 may be issued.
- relevant services including an authorised employee of the Office of Technical Inspection (UDT) and other competent persons who will verify the condition of the bottom interstitial space 110 and wall interstitial space 120 and determine whether a permission to operate the storage tank 100 may be issued.
- UDT Office of Technical Inspection
- the method consists in that a fluid in the form of water with surfactants reacting with a product 150 and corrosion inhibitors are forced through inspection stub pipe 130 of the system monitoring leakages to the bottom interstitial space 110 and wall interstitial space 120 of the storage tank 100 by means of a pressure installation with a pressure reducing valve allowing suitable selection of pressure, which is 0.5 bar in this case.
- the fluid After filling the bottom interstitial space 110 and wall interstitial space 120 with the fluid, which has been mixed with a product 150 remaining in said spaces, which product penetrated earlier to said spaces due to sealing failure, the fluid is drained through a inspection stub pipe 130 of the system monitoring leakages from said spaces by means of a pressure installation with a pressure reducing valve allowing proper selection of pressure, which is 0.5 bar in this case.
- a neutral gas in the form of nitrogen is forced in to eliminate explosive atmosphere inside the bottom interstitial space 110 and wall interstitial space 120 of the storage tank 100.
- the above-mentioned nitrogen is forced into the bottom interstitial space 110 and wall interstitial space 120 of the storage tank 100 through a inspection stub pipe 130 of the leakage monitoring system by means of gas reducers allowing suitable selection of pressure, which is 0.5 bar in this case, from a technological installation.
- the concentration of explosive gases in the bottom interstitial space 110 and wall interstitial space 120 of the storage tank 100 is measured in a continuous manner by means of gas meters on two inspection stub pipes 130 of the leakage monitoring system in order to properly clean those spaces.
- the process of cleaning the bottom interstitial space 110 and wall interstitial space 120 of the storage tank 100 is repeated until the concentration of explosive gases reaches the lower explosive limit which is below 10% for all kinds of hydrocarbon mixtures, below 4% - for gaseous hydrogen, and oxygen content below 5% for all types of gaseous mixtures.
- the lower explosive limit of the concentration of explosive gases was obtained after the process of cleaning the bottom interstitial space 110 and wall interstitial space 120 of the storage tank 100 was repeated twice.
- FIG. 2 shows a cross-section of a storage tank 200 which depicts, in a simplified way, a method of cleaning the wall interstitial space 120 of a storage tank 200 after the occurrence of a sealing failure in that space.
- the tank is a cylinder having a vertical axis, which is designed for the storage of a product 150 in the form of a liquid flammable material, which is unleaded petrol PB98 in this case.
- inspection holes 250 having a diameter of 20 mm have been drilled in the inner surface delimiting the wall interstitial space 120, as illustrated in more detail in FIG. 3 which presents a pattern of inspection holes 250 drilled in the inner surface delimiting the wall interstitial space 120 of the storage tank 200 according to the invention.
- the said inspection holes 250 are drilled by means of a pneumatically driven device equipped with a holder for mounting a core drill bit, the number thereof being dependent on the size of sections 280 into which the wall interstitial space 120 of the storage tank 200 has been divided.
- a pneumatically driven device equipped with a holder for mounting a core drill bit
- the number thereof being dependent on the size of sections 280 into which the wall interstitial space 120 of the storage tank 200 has been divided.
- 20 inspection holes 250 should be drilled in the wall interstitial space 120.
- the inspection holes 250 after cleaning the wall interstitial space 120 of the storage tank 200, are plugged with plugs of magnets with rubber gaskets providing additional sealing around the inspection holes 250 in order to lock the outflow of a neutral gas into the storage space 195 of the storage container 200.
- plugs of neodymium magnets have been used as plugs magnets provided with rubber gaskets.
- the solution according to the present invention uses the above specified technical means as shown in the FIGURES from FIG. 1 to FIG. 3 to offer a method of cleaning the bottom interstitial space and/or wall interstitial space of a storage tank, designed in particular for the storage of liquid flammable, toxic and caustic materials, which has been damaged due to the sealing failure in the bottom interstitial space and/or wall interstitial space.
- the present invention may be applicable in particular in all cases of a damage consisting in the sealing failure of the bottom interstitial space and/or wall interstitial space of a storage tank, which results in the necessity of cleaning or sealing said space.
- the present solution according to the invention is likely to be widely applied in particular in the petrochemical sector where the highest safety standards are required, especially in fuel depots and liquid fuel stations where storage tanks with bottom interstitial spaces and/or wall interstitial spaces are installed.
- the invention may also be applicable in the case of some long-distance transmission pipelines equipped with interstitial spaces and used to transport oil and oil products.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cleaning In General (AREA)
- Vacuum Packaging (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL16184057T PL3135391T3 (pl) | 2015-08-31 | 2016-08-12 | Sposób czyszczenia przestrzeni międzydennej i/lub międzyściennej zbiornika magazynowego |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL413758A PL228874B1 (pl) | 2015-08-31 | 2015-08-31 | Sposób czyszczenia przestrzeni międzydennej i/lub międzyściennej zbiornika magazynowego |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3135391A1 EP3135391A1 (en) | 2017-03-01 |
EP3135391B1 true EP3135391B1 (en) | 2018-02-14 |
Family
ID=56883532
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16184057.4A Active EP3135391B1 (en) | 2015-08-31 | 2016-08-12 | A method of cleaning the bottom interstitial space and/or wall interstitial space of a storage tank |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3135391B1 (pl) |
NO (1) | NO3135391T3 (pl) |
PL (2) | PL228874B1 (pl) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114433580B (zh) * | 2020-10-20 | 2023-05-26 | 中国石油化工股份有限公司 | 储罐底板在线油泥冲刷装置及冲刷方法 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5096087A (en) * | 1989-08-02 | 1992-03-17 | Coretank, Inc. | Double containment and leak detection apparatus |
FI115962B (fi) * | 2001-12-03 | 2005-08-31 | Pti Systems Oy | Menetelmä ja laitteisto kaksivaippaisen säiliön välitilan puhdistamiseksi ja täyttämiseksi |
-
2015
- 2015-08-31 PL PL413758A patent/PL228874B1/pl unknown
-
2016
- 2016-08-12 EP EP16184057.4A patent/EP3135391B1/en active Active
- 2016-08-12 PL PL16184057T patent/PL3135391T3/pl unknown
- 2016-08-12 NO NO16184057A patent/NO3135391T3/no unknown
Non-Patent Citations (1)
Title |
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Also Published As
Publication number | Publication date |
---|---|
EP3135391A1 (en) | 2017-03-01 |
NO3135391T3 (pl) | 2018-07-14 |
PL228874B1 (pl) | 2018-05-30 |
PL3135391T3 (pl) | 2018-06-29 |
PL413758A1 (pl) | 2017-03-13 |
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