LEAKAGE DETECTING APPARATUS FOR SECOND BARRIER OF MEMBRANE TYPE LNG CARGO HOLD
The present invention refers to membrane type liquefied natural gas of a cargo barrier difference 2 relates to device for leak detection, more specifically 1 difference barrier and 1 without removal of heat insulating layer difference damage forwardly of the baffle 2 difference enables confirmation of the position relates to a leak detection device. Is regarded as world-and an environment-friendly business-of-interest oil a plane which is on the increase, existing coal such as metals and may replace light energy source to the need of the cleaning fuel walls of wet liquid to flow down. In such situations natural gas a cleanness, stability, with through convenience main energy source at a top of the heat pipe. at least one selected from thiosulfate. Through an air conditioner, wherein a pipe our country natural gas by directly supplying a American or European unlike the liquefied cryogenic natural gas as a liquid natural gas (LNG: Liquified Natural Gas) supplied to the consumer by introducing of wet liquid to flow down. Therefore, from a of the natural gas with an increase in demand for storing liquefied natural gas increased also demand of a cargo of wet liquid to flow down. The natural gas liquefied natural gas substantially the same -163 ° C of the cryopumps by a dust removal filter be obtained, creating a, gas than when marine is significantly reducing the volume through a remote delivery. well suited. The liquid natural gas carrier, liquefied natural gas at a required the caterpillars by using sea loading and unloading liquefied natural gas at a destination in a chamber in which unloading motor, of liquefied natural gas to this cryogenic therebetween which can withstand high includes cargo. Mesh on the of the cargo of liquefied natural gas cargo load is directly act on the depending on whether the independent tank type (Independent Tank) classification (Membrane Type) in membrane-like and can be. Membrane-like at a cargo which divided into type Mark III and GTT NO 96, a cargo tank type independent type IHI-SPB and MOSS. divided into. GTT Mark III GTT NO 96 and conventional form of operation are set according to the disadvantageous with respect to type and TGZ GT a commercial-scale, Technigaz (TGZ) yarns; Gaz Transport (GT) years 1995 GTT (Gaztransport & Technigaz) thing of each is changed name highly entangled-GTT NO 96 form GT, TGZ-GTT Mark III form is used in [...]. Membrane type a liquefied natural gas cargo hull is generally heat insulating layer difference 2 mounted thereon, heat insulating layer difference 2 barrier difference 2 mounted thereon, 1 mounted thereon barrier difference 2 and difference 1 difference heat insulating layer mounted thereon includes barrier difference 1, heat insulating layer a path of the first transfer unit transfers input data by internal cargo heat is liquefied, natural gas, is vaporized and thin steel core in order to prevent, barrier the liquefied natural gas is without leakage for the one barrier is a cylindrical boss a barrier the liquifier other steps to prevent leakage of natural gas is provided doubly. Liquefied natural gas during a dry cargo is no abnormality even can be damage during vessel passing, forwardly of the baffle is the leaking of the liquefied natural gas damage the separator is arranged on the barrier and quickly ascertain whether, damage site where an accurately or. very important. 1 when the separator is arranged on the barrier difference, 1 difference barrier the exposed on the surface is provided float, a magnet, and may be to locate site damage, cargo fills an helium gas inside the helium gas by irradiation in a contact state to directly may be to locate site. However so long as to corrupt the barrier difference 1 and free from when the only barrier difference 2, the barrier difference 2 below heat insulating layer difference 1 barrier and difference 1 performs own since it is still more tray structure site and breakage it is difficult. The 2 difference method at plural forwardly of the baffle tray structure method of using a sensor temperature and gas is connected to the semiconductor layer. method of using a sensor detection. The method of using a sensor temperature, approximately -163 ° C liquefied natural fume temperature causing the fluid leakage liquefied natural gas since the cryopumps when sharp temperature of the exposed portions of the use of what is permitted. The method of using a sensor temperature however, the forwardly of the baffle 1 difference is the site of injury n is the fixed number more than leak of liquefied natural gas and cooled to ambient temperature is when the effective, without damage to the element forwardly of the baffle difference 1 2 when the only barrier difference liquefied natural gas is used to be cooped up in barrier difference 1 to reach from one barrier difference 2 2 if so, the difference can't ascertainable plural forwardly of the baffle. The method of using a sensor detecting gas, each insulating layer upper cargo fifth silicon nitride layer gas inert, such as nitrogen connected to a pipe heat insulating layer each or flow is monitored gas through the pressure trend analysis up circuit includes an n a detection of whether to the typical method, is enabled is detected and determines the motion and leakage at method, location of a leak can't server specifically. 2 forwardly of the baffle difference conventional technique for localizing location of a leak, forwardly of the baffle difference 2 for localizing damage using the stethoscope acoustic (Acoustic) inspection method but is, the leakage layer is positioned between which and the resulting positioned drawback in that the possible incorrect also is widely used method is amplifying circuit view MSS, eventually 2 difference-etched by locating an leakage forwardly of the baffle generally 1 difference barrier and 1 difference layers and a heat insulating layer after removing the photoresist helium testing, etc. but must must embodiment, such cavities and by eliminating costly and the method was significant. Such known the present invention refers to is a section for of solving a problem with a conventional, the first and second exhaust lines are heat insulating layer difference 2 gas detection device including a membrane-like liquefied natural gas of a cargo device leak detection for barrier difference 2 in for providing. The callee opens the folder of his said according to one aspect of the present invention, membrane-like liquefied natural gas of a cargo device leak detection for barrier difference in 2, the cargo 2 difference said heat insulating layer, barrier difference 2,1 1 and difference includes barrier difference, said leak detection device a, said 2 difference heat insulating layer from a sensor installed in the gas detection device; and said gas detection device is fixed is formed at a bottom surface a fixing element; includes, a device detecting gas said heat insulating layer difference said 1 from damage through said 2 difference forwardly of the baffle and flows down said 2 heat insulating layer difference is arranged to detect a gas and, removing said 1 difference barrier and said 1 difference layers and a heat insulating layer without a difference said 2 characterized by forwardly of the baffle to a damage, membrane-like liquefied natural gas 2 of a cargo barrier difference for leak detection device is provided. Said gas detection device a, gas of detecting the presence the sensor section; and said sensor section acquired in a signal control devices or phone display device said sensor section said signal transmitting the sensor cable; can include a, said said sensor cable of said sensor unit can be provided to one end of the fixing member. The sensor cable said said hull and said 2 heat insulating layer difference can be installed between. The cargo said said hull and said 2 ring secure a barrier difference further includes device, said device formed on a lower portion of the sensor cable said secure ring to pass the pressure plate. Said fixing member is formed of a, said further bolt part from which are projected at fixing member may include, a device detecting gas said side face formed by a side surface of said bolt and said bolt part with pores to an opening formed in said fixing member can be through the. Said bolt part a, said bolt part along the longitudinal direction of a plurality of slit may include a. Said leak detection device a, said gas detection device to secure a bottom for said fixing member can further include nut, a screw thread is formed on the, easily the inner surface a smaller the diameter of the inner space is located at the opposite side of the fixed member and said inner space said one with a greater diameter to said fixing member located either. capable of binding to said bolt part. Said leak detection device a, said nut is said gas detecting degree tightening of the device so as to adjust the nut and said fixing member connected with an exhaust hole may further include any washer. The callee opens the folder of his said in accordance with another aspect of the present invention, heat insulating layer difference 2 1 difference and the inert gas fills an inert gas said flow of said 1 by monitoring plural forwardly of the baffle or barrier difference phases are in equilibrium said 2 difference, said 1 said 2 inserted to the recessed groove and fixed the barrier difference, the destruction of barrier difference of the antenna in case that the 2 and said 1 difference form the vacuum insulating layer difference, the vacuum heat insulating layer difference said 2 and said 1 difference in the thin film layer which is an heat insulating layer to said 2 difference detecting device in a automobile using device is detected gas is of a kind capable of the heat insulating layer filled in said 1 difference and, said 2 heat insulating layer from said 1 difference difference said 2 through portions thereof forwardly of the baffle the layers and a heat insulating layer difference said gas flowing through said gas detection device the is detected, said 1 difference barrier and said 1 difference layers and a heat insulating layer without a removing said 2 difference forwardly of the baffle to a damage characterized by, membrane-like liquefied natural gas of a cargo [...]it is provided leak detection barrier difference. 2 is provided. Membrane-like liquefied natural gas of the present invention of a cargo device leak detection for barrier difference 2 a, the first and second exhaust lines are heat insulating layer difference 2 includes a gas detection device, 1 difference barrier and 1 difference without removing all layers and a heat insulating layer 2 difference controls damage position forwardly of the baffle can be a relatively accurate, detailed leakage the inspection zone more nearly parallel to normal, minimizes leak testing can be only a PCB is, forwardly of the baffle 2 difference damage repaired by substitution of sites 1 barrier and difference 1 a range wherein a removing insulating layer difference without the charging/discharging time unit is off. In particular, LNG FPSO directly hit on the such a case with adjacent to the Bulletin window repairable, 2 time and for detecting leakage detailed time repair barrier difference of the present invention is formed in the guide pulley to membrane-like liquefied natural gas of a cargo barrier difference 2 more useful for leak detection device can be used. A preferred embodiment of the present invention the first deoxygenator also Figure 1 shows a membrane-like liquefied natural gas for leak detection of a cargo barrier difference 2 contained in the device shown, which together significantly simplifies the members is a perspective view. Also Figure 2 shows a membrane-like the first deoxygenator of the present invention a preferred embodiment of a cargo liquefied natural gas 2, which together significantly simplifies the device leak detection for barrier difference shown in the is side. A also also Figure 3 shows a 2 a, and a front surface is looked in the direction. A preferred embodiment of the present invention the first deoxygenator also Figure 4 shows a membrane-like liquefied natural gas of a cargo device leak detection for barrier difference 2 including a part of a cargo liquefied natural gas, which together significantly simplifies the. whose cross section shown. A preferred embodiment of the present invention the first deoxygenator also Figure 5 shows a membrane-like liquefied natural gas of a cargo 2, which together significantly simplifies the device leak detection for barrier difference shown is a perspective view. Figure 6 shows a ring secure cable example sensor embodiment a are also lower of device outlines an initial distance space. that is as planar as represents. Drawing hereinafter based on a text content of the reference to a preferred embodiment of the present invention detail the configuration for one cartridge configuration and actions. off at the first and the second. A liquefied natural gas membrane-like the first deoxygenator embodiment of a cargo device leak detection for barrier difference 2 a, a and land ship all membrane-like liquefied natural gas can be applied to the cargo. Furthermore, a various relate embodiment may be deformed of means and in different phases, to range of the present invention embodiment aspect limited not. A preferred embodiment of the present invention the first deoxygenator also Figure 1 shows a membrane-like liquefied natural gas for leak detection of a cargo barrier difference 2 contained in the device shown, which together significantly simplifies the members and a perspective view, Figure 2 of the present invention a preferred embodiment of a cargo liquefied natural gas membrane-like the first deoxygenator for barrier difference 2, which together significantly simplifies the device leak detection is shown in the side view, Figure 3, and a front surface looked in the direction also A a is 2. Furthermore, a preferred embodiment of the present invention the first deoxygenator also Figure 4 shows a membrane-like liquefied natural gas of a cargo device leak detection for barrier difference 2 including a part of a cargo liquefied natural gas, which together significantly simplifies the. whose cross section shown. Fixing member (200) the cargo (100) towards the bottoms of the 2 difference barrier (120) directly as well as side and a ceiling 2 difference barrier (120) but can be installed, at the bottom side of the such as a 4 also for the sake of convenience 2 difference barrier (120) fixed to member (200) is provided a measured, for example, using a moment when a described. Furthermore, fixing member (200) a secure ring device (500, Securing Device) data setting plate (510, Setting Plate) one front surface side of (511) and constructed (512) but can be mounted any place with during, also for the sake of convenience 4 such as a fixing member (200) is provided brake only measured, for example, using the described. Similarly, sensor cable (620) 4 also also in the extending direction position and installation of such as appearance and are not limited to, heat insulating layer of installation position and hull depending upon the structure of the various can be easily changed. Also with a 3 also to 1, the present embodiment of a cargo liquefied natural gas membrane-like the first deoxygenator 2 a device leak detection for barrier difference, gas detection device (600); gas detection device (600) is fixed is formed at a bottom surface a fixing element (200); gas detection device (600) material (200) to secure a bottom nut (300); and nut (300) the gas detection device (600) controlling an amount of tightening of the washer (400, Washer); includes. Gas detection device (600) the, gas of detecting the presence the sensor section (610); and sensor section (610) acquired in a signal control devices or controlled device sensor cable (620) to sensor section (610) mechanism supports the driving mechanism transmitting signals for the sensor cable (620); includes. Sensor cable (620) at one end of the sensor section (610) which are mounted thereon and provided with, sensor cable (620) is coupled of the control device and the service end other side of the, sensor section (610) can be sensing of helium. Also refers to surface 4, sensor cable (620) the, hull (10) through the cargo (100) of 2 difference heat insulating layer (110) to a level below after the hull (10) and a heat insulating layer difference 2 (110) according gaps between, extending the length of the. Sensor cable (620) a ship with reduced frictional resistance (10) of passages (Passageway) and diaphragm wall 2 difference (Transverse Bulkhead) to an internal bottom surface of the through the heat insulating layer (110) can be extending to a level below. Hull (10) and a heat insulating layer difference 2 (110) extending along gaps between board is pushed into the sensor cable (620) provides the light to the display panel (200) under fixing member (200) by reversing the direction of toward continues to, extending. Generally heat insulating layer is constructed of a plurality of the insulation box which improves the quality, each the insulation box which improves the quality an empty space is formed between the. The present embodiment the first deoxygenator sensor cable (620) the, the insulation box which improves the quality the void between. be passed. 2 difference heat insulating layer (110) and security ring device (500) is provided after the sensor cable through the spaces between the insulation box which improves the quality (620) can also be installed at the is, sensor cable according to zone provided (620) is first may be provided. Fixing member (200) a sensor cable extending toward the base portions (620) provides the light to the display panel (200) of bolt part (230) therethrough and, sensor cable (620) fixing member (200) end the sensor section (610) is provided. Membrane-like liquefied natural gas cargo (100) the hull (10) and a 2 difference barrier (120) a secure ring device (500) is formed in the upstream link type, sensor cable (620) one or more secure ring device (500) may be allowed to pass through the. Secure ring device (500) is hull (10) are mounted to the upper part and directly upon secure ring device (500) and said hulls (10) since gapless between the, sensor cable (620) having at one of its ends 2 difference heat insulating layer (110) extending into secure ring device (500) after lower the space enclosed by heat insulating layer difference 2 again in the state of past (110) the hull (10), extending of the gap between the. Figure 6 shows a ring secure cable example sensor embodiment a are also lower of device outlines an initial distance space. that is as planar as represents. With a 6 also, the present embodiment the first deoxygenator sensor cable (620) a secure ring device (500) coupler of a rod (Coupler Rod, 530) to bypass the secure ring device (500) of a lower space. The present embodiment the first deoxygenator leak detection device a, existing 2 difference heat insulating layer (110) and security ring device (500) without changing the arrangement of sensor cable required from the outside (620) of 2 difference heat insulating layer (100) to generally extend into, hull (10) and a heat insulating layer difference 2 (100) gaps between the optical fibres, the free space between the insulation box which improves the quality device (500) ring and security sensor cable using lower space (620), which may be, 2 difference heat insulating layer (110) and a heat insulating box body space between for use efficiently, sensor cable (620) coupler rod (530) and a maximum it is preferred that a closely which circumvent. Furthermore, also as shown in 4, sensor cable (620) a secure ring device (500) socket base coupler of a lower space (520, Coupler Base Socket) preferably to pass an energy beam onto the. The present embodiment the first deoxygenator fixing member (200) the 2 difference heat insulating layer (110) gas detection device (600) is provided for holding the, also with a 3 also to 1, the present embodiment the first deoxygenator fixing member (200) the, hull (10) horizontal bottom surface the lower piece is formed to be horizontal portion (210); and hull (10) bottom surface are vertical horizontal portion (210) formed downward from one end of the vertical part (220); includes. Vertical portion (220) bolts at part (230) is formed with, bolt part (230) the vertical portion (220) from horizontal portion (210), or extends opposite directions and are. Bolt part (230) the in circular cylinder is preferably, bolt part (230) plurality of slit (231) is formed. Plurality of slit (231) the, vertical portion (220) opposite bolt part (230) end from vertical portion (220) towards the is, having a spacing corresponding to that of the each other it is preferable that the. Bolt part (230) the center of the bolt part (230) in the longitudinal direction of the bolt part (230) a cemented carbide, a hole through are formed as a, vertical portion holes (220) until device (600) detection gas through the bolt part (230) and vertical portion (220) penetrates in living information only once outputs a relay driving signal.. Bolt part (230) plurality of slit (231) is formed is, the inner surface inclined a nut (300) using thereof with the aid of the gas detection device (600) provided to securely. can be stopped down. Bolt part (230) diameter of the hole formed with the center of a gas detection device (600) of sensor cable (620) little greater than the diameter of preferably the thin film transistor. The present embodiment the first deoxygenator fixing member (200) the, 1 difference barrier (140) the inserted to the recessed groove and fixed 2 difference barrier (120) the cut surface of the substrate only the in one embodiment helium sensor S12 may also be used but, 1 difference barrier (140) and 2 difference barrier (120) both the gas sensor or liquefied temperature sensor and can also be provided for.. Fixing member (200) gas detection device (600) and other types of sensor to holding together, fixing member (200) for vertical unit of (220) further can be wide, vertical portion (220) to bolt part (230) can be formed is individually. A preferred embodiment of the present invention the first deoxygenator also Figure 5 shows a membrane-like liquefied natural gas of a cargo 2, which together significantly simplifies the device leak detection for barrier difference shown is a perspective view. Also 5 refers to surface, the present embodiment the first deoxygenator fixing member (200) the sensor cable (620) as well as heat insulating layer difference 2 (110) and a heat insulating box body and in a space between, fixing member (200) of horizontal portion (210) device (500) ring secure a data setting plate (510) is welded to. Fixing member (200) a secure ring device (500) data setting plate (510) may be welded to that sets to plate (510) such as may include a SUS material. Fixing member (200) of horizontal portion (210) upper surface; secure ring device (500) data setting plate (510) upper surface of; and 2 difference heat insulating layer (100) and a plurality of apertures with an upper surface of the insulation box which improves the quality; the rectangular shapes of the same size, fixing member (200) of horizontal portion (210) upper surface; secure ring device (500) data setting plate (510) upper surface of; and 2 difference heat insulating layer (100) and a plurality of apertures with an upper surface of the insulation box which improves the quality; to cover the 2 difference barrier (120) are provided on. The present embodiment the first deoxygenator nut (300) the, also as shown in 2, one side of inner space little than the diameter other diameter is formed within, the inner surface is formed inclined. The present embodiment the first deoxygenator nut (300) comprises an inner surface is formed inclined, vertical portion is a smaller diameter (220) and situated on the opposite side of the one a greater diameter vertical portion (220) placed in to nut (300) a bolt part (230) the case and is connected to the, bolt part (230) relative to a slit (231) of the connecting bolt part while (230) for vertical unit of (220) and a opposite portions. is tightened. Therefore, the present embodiment the first deoxygenator nut (300) gas by using aqueous detection device (600) material (200) can be securely anchored to the. The present embodiment the first deoxygenator washer (400) a fixed member (200) for vertical unit of (220) and a nut (300) placed between the parts bolt part (230) hood or bonnet is connected to the, washer (400) by the centrifugal force while the colloid the (300) by part (230) is tightened since can adjust the degree of cooking, the present embodiment the first deoxygenator washer (400) using a variety of thicknesses of sensor cable (620) a gas having the same detection device (600) as a function of can be rigidly fixed. The present embodiment the first deoxygenator fixing member (200) progressed preferably is placed at a level with a, plurality of fixing member (200) device (500) ring secure the plurality data setting plate (510) and are welded respectively to, each fixed member (200) the each gas detection device (600) is is fixed. Each gas detection device (600) both connected to a thin film magnetic transducer with one integral is controlled in various control may be may be operably coupled to each of the device. Reducing expenses and performing system for the optimization, simulating the higher returns damage through a information, damage returns the higher concentrated in the fixing member (200) and gas detection device (600) in the. Hereinafter, membrane-like liquefied natural gas of the present invention of a cargo device leak detection for barrier difference 2 2 using difference barrier (120) of and breakage method describes a tray structure site. Facing surfaces of the first, i.e. barrier (120,140) agent doesn't occur expansible and free from breakage at least one heat insulating layer (110,130) of the, such as nitrogen is filled, inert gas is.. Each heat insulating layer (110,130) gas flow monitoring the gas pressure change trend of through barrier (120,140) may be and transmits the breakage of, 1 difference barrier (140) the inserted to the recessed groove and fixed 2 difference barrier (120) only determined to have been damaged due to a surface, each heat insulating layer (110,130) with a vacuum and. Each heat insulating layer (110,130) a vacuum method fabricating the basic form of the device and is on. a non-intrusive even using a techniques. Each heat insulating layer (110,130) such as helium in the thin film layer which is an the vacuum of the present invention leak detection device is detected gas is of a kind capable of the heat insulating layer difference 1 (130) filled in surface, heat insulating layer difference 1 (130) internal gas 2 difference barrier (120) of the heat insulating layer difference 2 through portions thereof (110) .and flows down. 2 difference barrier (120) in the uncovered part of the breakage of sensor section a to the bottom side (610) the gas waveform to the sensor section a to the bottom side the (610) since the gas of the test, 2 difference barrier (120) breakage of can be found or where site. Aspect the present invention refers to said embodiment is not limited, the current source from deviating it is submitted with the technical of the present invention within the range and sells the medicine to the patient is deformed or modified embodiment may be in the present invention is in the field of the. scrapped in person with skill in the art. 10: hull 100 : liquefied natural gas cargo 110:2 difference heat insulating layer 120:2 difference barrier 130:1 difference heat insulating layer 140:1 difference barrier 200: fixing member 210: horizontal portion 220: vertical portion 230: bolt part 231: slit 300 : nut 400: washer 500 : secure ring device 510: setting plate 520: coupler base socket 530: coupler rod 600: gas detection device 610: sensor section 620: sensor cable Disclosed is a leakage detecting apparatus for a second barrier of a membrane-type LNG cargo hold. The cargo hold comprises: a second insulation layer, a second barrier, a first insulation layer, and a first barrier. The leakage detecting device comprises a gas detecting device and a fixing member providing a space in which the gas detecting device is fixated. The gas leakage detecting apparatus is able to detect gas flowing into the second insulation layer through a damaged portion of the second barrier from the first insulation layer, and determines the damaged position of the second barrier while the first barrier and the first insulation layer are not removed. COPYRIGHT KIPO 2016 Membrane-like liquefied natural gas of a cargo device leak detection for barrier difference in 2, the cargo 2 difference said heat insulating layer, barrier difference 2,1 1 and difference includes barrier difference, said leak detection device a, said 2 difference heat insulating layer from a sensor installed in the gas detection device; and said gas detection device is fixed is formed at a bottom surface a fixing element; includes, a device detecting gas said heat insulating layer difference said 1 from damage through said 2 difference forwardly of the baffle and flows down said 2 heat insulating layer difference is arranged to detect a gas and, removing said 1 difference barrier and said 1 difference layers and a heat insulating layer without a difference said 2 characterized by forwardly of the baffle to a damage, membrane-like liquefied natural gas of a cargo device leak detection for barrier difference 2. According to Claim 1, said gas detection device a, gas of detecting the presence the sensor section; and said sensor section acquired in a signal control devices or phone display device said sensor section said signal transmitting the sensor cable; includes, said sensor cable of said said sensor unit a to one end of the fixing member, membrane-like liquefied natural gas of a cargo device leak detection for barrier difference 2. According to Claim 2, said hull and said 2 difference the sensor cable said heat insulating layer is installed between a, membrane-like liquefied natural gas of a cargo device leak detection for barrier difference 2. According to Claim 2 or Claim 3, the cargo said said hull and said 2 ring secure a barrier difference further includes device, the sensor cable said lower the space enclosed by said secure ring device through the, membrane-like liquefied natural gas of a cargo device leak detection for barrier difference 2. According to Claim 1, said fixing member is formed of a, a bolt projecting from said fixing member further comprising a, a device detecting gas said side face formed by a side surface of said bolt and said bolt part with pores to an opening formed in said fixing member through the, membrane-like liquefied natural gas of a cargo device leak detection for barrier difference 2. According to Claim 5, said bolt part a, said bolt part along the longitudinal direction of a plurality of slit including, membrane-like liquefied natural gas of a cargo device leak detection for barrier difference 2. According to Claim 6, said gas detection device for said fixing member further includes nut to secure a bottom, a screw thread is formed on the, easily the inner surface a smaller the diameter of the inner space is located at the opposite side of the fixed member and said inner space said one with a greater diameter to said fixing member located either said bolt part that bind to, membrane-like liquefied natural gas of a cargo device leak detection for barrier difference 2. According to Claim 7, said nut is said gas detection device so as to adjust the degree tightening of the nut and said washer connected with an exhaust hole fixing member further including, membrane-like liquefied natural gas of a cargo device leak detection for barrier difference 2. 1 difference and said heat insulating layer difference 2 the inert gas fills an inert gas flow of said 1 by monitoring plural forwardly of the baffle or barrier difference phases are in equilibrium said 2 difference, said 1 said 2 inserted to the recessed groove and fixed the barrier difference, the destruction of barrier difference of the antenna in case that the 2 and said 1 difference form the vacuum insulating layer difference, the vacuum heat insulating layer difference said 2 and said 1 difference in the thin film layer which is an heat insulating layer to said 2 difference detecting device in a automobile using device is detected gas is of a kind capable of the heat insulating layer filled in said 1 difference and, said 2 heat insulating layer from said 1 difference difference said 2 through portions thereof forwardly of the baffle the layers and a heat insulating layer difference said gas flowing through said gas detection device the is detected, said 1 difference barrier and said 1 difference layers and a heat insulating layer without a removing said 2 difference forwardly of the baffle to a damage characterized by, membrane-like liquefied natural gas of a cargo 2 difference barrier leak detection method.
