Assembling method of sealed heat insulation tank to be assembled in load support structure
Patent Information
- Application Number
- JP2022187846
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2021-11-30
- Filing Date
- 2022-11-25
- Publication Date
- 2025-10-20
Smart Images
Figure 00000000_0000_ABST
Abstract
Description
[Technical Field]
[0001] The present invention relates to the field of sealed, insulated membrane tanks for storing and / or transporting fluids such as liquefied gases. Sealed, insulated membrane tanks are particularly used for storing liquefied natural gas (LNG), which is stored at atmospheric pressure and at approximately -163°C. Such tanks can be installed on land or on floating structures. In the floating structures, the tanks can be used to transport LNG or to contain LNG used as fuel for powering the floating structure.
[0002] In one embodiment, the liquefied gas is LNG, a mixture with a high methane content stored at a temperature of about -162°C and atmospheric pressure. Other liquefied gases can also be stored, in particular ethane, propane, butane or ethylene, but also hydrogen. The liquefied gas can also be stored under pressure, for example at a relative pressure of 2 to 20 bar, in particular at a relative pressure of about 2 bar. [Background technology]
[0003] A sealed, insulated storage tank for liquefied natural gas placed on a load-bearing structure has a multi-layer structure, specifically comprising (from the exterior to the interior of the tank) a secondary insulating barrier fixed to the load-bearing structure, a secondary sealing membrane attached to the secondary insulating barrier, a primary insulating barrier attached to the secondary sealing membrane, and a primary sealing membrane attached to the primary insulating barrier, the primary sealing membrane being designed to be in contact with the liquefied natural gas stored in the tank.
[0004] The load-bearing structure typically has a polyhedral shape. The primary and secondary insulating barriers can at least in part be made of prefabricated, standard-size insulating elements outside the interior space of the tank, for example according to the principle described in patent application FR 2 691 520. The primary sealing membrane can in particular be made of several overlapping, welded corrugated metal sheets. Summary of the Invention
[0005] The finding underlying certain aspects of the present invention is that for fabricating a primary sealing membrane from a corrugated metal sheet selected from a set of corrugated metal sheets having predetermined dimensions, dimensional deviations from the ideal polyhedral shape of the design of the load-bearing structure make it impossible to achieve sufficient continuity between the corrugations of the sheet, which is very important to ensure good mechanical strength of the primary sealing membrane.
[0006] One of the central ideas of the present invention is to take in situ dimensional measurements at the load-bearing wall to adjust the dimensions of a particular corrugated metal sheet and use these measurements to compensate for any dimensional deviations from the ideal polyhedral shape for which the load-bearing structure is designed.
[0007] The present invention therefore proposes an assembly method for a sealed, insulated tank to be assembled to a load-bearing structure, the sealed, insulated tank comprises a first tank wall secured to a first load-bearing wall and a second tank wall secured to a second load-bearing wall that connects with the first load-bearing wall at an edge of the load-bearing structure; the first tank wall and the second tank wall each include a sealing membrane and a thermal insulating barrier disposed between the sealing membrane and the load-bearing wall; The insulating barrier of the first tank wall comprises: a first insulating panel disposed along said edge; a second insulating panel arranged alongside the first insulating panel on the opposite side of the first insulating panel from the second load-bearing wall and along an edge of the first insulating panel; Equipped with the sealing membrane of the first tank wall comprises a corrugated metal sheet spanning the first insulating panel and the second insulating panel; The assembly method includes: - obtaining a geometric definition of the first tank wall, comprising a dimension a of the first insulating panel in a direction perpendicular to the edge, and a dimension b of the second insulating panel in a direction perpendicular to the edge; - drawing an edge line on the first load-bearing wall a distance from the edge equal to the dimension a, and drawing a plurality of successive locating lines parallel to each other and spaced apart by a distance equal to the dimension b from a center line of the first load-bearing wall toward the edge line, the successive locating lines being parallel to the edge, with the last locating line being spaced apart from the edge line by less than the dimension b; - obtaining at least one measured dimension representing the distance between said edge line and said final positioning line in a direction perpendicular to said edge; - dimensioning the corrugated metal sheet based on said at least one measured dimension; - placing the first insulation panel between the edge and the edge line so that one side of the first insulation panel opposite the edge is aligned with the edge line, and placing the second insulation panel so that one side of the second insulation panel facing the first insulation panel is aligned with the final positioning line; - placing the corrugated metal sheet across the first insulation panel and the second insulation panel; It has.
[0008] "Straddling the first and second insulating panels" means that either side of the corrugated metal sheet extends from the first insulating panel side of the second insulating panel over the first insulating panel and the second insulating panel side. The corrugated metal sheet can be directly attached to the first and second insulating panels, or alternatively, other elements of the first tank wall can be sandwiched between the corrugated metal sheet and the first and second insulating panels. "Central" means that a centerline equally divides the first load-bearing wall into two walls of equal surface area.
[0009] Sizing the corrugated metal sheet based on at least one measured dimension as described above helps to compensate for any dimensional deviations from the ideal polyhedral shape of the design of the load-bearing structure, especially in the metal sheets closest to the edges. This allows the corrugated metal sheet blank to be selected from a set of blanks with predetermined dimensions perpendicular to the edges. This helps to limit the number of dimensions of corrugated metal sheet to be produced, thereby reducing the manufacturing costs of the tank.
[0010] Depending on the embodiment, the above-described assembly method may comprise one or more of the following features:
[0011] In one embodiment, the step of dimensioning the corrugated metal sheet comprises: - providing a corrugated metal sheet blank having an initial dimension in a direction perpendicular to said edges; - calculating a cutting length for the corrugated metal sheet blank based on the at least one measured dimension and the initial dimension; - cutting the corrugated metal sheet blank to the cut length to obtain the corrugated metal sheet; It has.
[0012] In one embodiment, the initial dimensions of the corrugated metal sheet blank are determined depending on the position of the corrugated metal sheet in the first tank wall.
[0013] In one embodiment, the method further comprises filling a gap between the first insulating panel and the second insulating panel with at least one insulating element.
[0014] In one embodiment, the corrugated metal sheet has at least one welded edge for lap welding with another corrugated metal sheet of the sealing membrane of the first tank wall.
[0015] In one embodiment, the dimension a is the dimension of the first insulating panel in a direction perpendicular to the edge.
[0016] In one embodiment, the insulating barrier of the second tank wall comprises a third insulating panel arranged along the edge on the side of the first insulating panel, and at least one spacer element arranged between the third insulating panel and the second load-bearing wall, wherein the dimension a is the sum of a dimension of the first insulating panel in a direction perpendicular to the edge and a dimension of the spacer element in a direction perpendicular to the edge.
[0017] In one embodiment, the corrugated metal sheet has a first row of corrugations extending parallel to one another in a direction perpendicular to the edge, and a second row of corrugations extending parallel to one another in a direction parallel to the edge.
[0018] In one embodiment, the first primary insulation panel comprises an interior plate, an exterior plate, and a polymer foam block sandwiched between the interior and exterior plates.
[0019] In one embodiment, the insulating barrier is a secondary insulating barrier and the first tank wall further comprises a primary insulating barrier; The primary insulating barrier comprises: a first insulation block disposed on the first insulation panel and supporting a surface of the iron metal angle; a second insulating block disposed on the second insulating panel and supporting a metal plate; a bridge element disposed between the first and second insulating blocks; Equipped with The step of installing the corrugated metal sheet across the first insulation panel and the second insulation panel includes placing the corrugated metal sheet over the bridge element so that a first edge of the corrugated metal sheet overlaps a portion of the face of the steel metal angle and so that a second edge of the corrugated metal sheet overlaps a portion of the metal plate.
[0020] In one embodiment, the method further comprises calculating a cut length for the bridge element based on the at least one measured dimension and the geometric definition of the first tank wall, and cutting the bridge element to the calculated cut length.
[0021] In one embodiment, the first tank wall further comprises a secondary sealing membrane disposed between the secondary insulating barrier and the primary insulating barrier.
[0022] In one embodiment, the secondary sealing membrane is made from a composite material including aluminum sheet and glass fiber and is bonded to the secondary insulating barrier and the primary insulating barrier.
[0023] The present invention further provides a method of assembly for a sealed, insulated tank assembled to a load-bearing structure, comprising: the sealed, insulated tank comprises a first tank wall secured to a first load-bearing wall and a second tank wall secured to a second load-bearing wall that connects with the first load-bearing wall at an edge of the load-bearing structure; the first tank wall and the second tank wall each include a sealing membrane and a thermal insulating barrier disposed between the sealing membrane and the load-bearing wall; The insulating barrier of the first tank wall comprises: a first insulating panel disposed along said edge; a second insulating panel arranged alongside the first insulating panel on the opposite side of the first insulating panel from the second load-bearing wall and along an edge of the first insulating panel; Equipped with the sealing membrane of the first tank wall comprises a corrugated metal sheet spanning the first insulating panel and the second insulating panel; the insulating barrier of the second tank wall comprises a third insulating panel disposed along the edge on the side of the first insulating panel, and at least one spacer element disposed between the third insulating panel and the second load-bearing wall; The assembly method includes: - obtaining a geometric definition of the first tank wall, including a dimension b of the second insulating panel in a direction perpendicular to the edge; - dimensioning said at least one spacer element in dependence at least on said first measured dimension obtained for said second load-bearing wall; - drawing a plurality of successive locating lines on the first load-bearing wall from a center line of the first load-bearing wall toward and parallel to the edge, the locating lines being parallel to each other and spaced apart by a distance equal to the dimension b, wherein the last locating line of the plurality of locating lines is spaced from the edge by a distance at least equal to the dimension of the first insulating panel perpendicular to the edge plus b; - placing the at least one spacer element on the second load-bearing wall, placing the third insulation panel along the edge of the second load-bearing wall so that the third insulation panel is mounted to the at least one spacer element, placing the first insulation panel along the edge of the first load-bearing wall on the side of the third insulation panel, and placing the second insulation panel on the first load-bearing wall so that one side of the second insulation panel on the side of the first insulation panel is aligned with the last locating line; - obtaining at least one second measured dimension representing the distance between the side of the second insulating panel and the edge of the first insulating panel in a direction perpendicular to the edge; - dimensioning the corrugated metal sheet based on the at least one second measured dimension; - placing the corrugated metal sheet across the first insulation panel and the second insulation panel; It has.
[0024] "Straddling the first and second insulating panels" means that either side of the corrugated metal sheet extends from the first insulating panel side of the second insulating panel over the first insulating panel and the second insulating panel side. The corrugated metal sheet can be directly attached to the first and second insulating panels, or alternatively, other elements of the first tank wall can be sandwiched between the corrugated metal sheet and the first and second insulating panels. "Central" means that a centerline equally divides the first load-bearing wall into two walls of equal surface area.
[0025] Determining the dimensions of the corrugated metal sheet based on the at least one second measured dimension described above helps to compensate for any dimensional deviations from the ideal polyhedral shape of the design of the load-bearing structure, especially in the metal sheets closest to the edges. This allows the corrugated metal sheet blank to be selected from a set of blanks with predetermined dimensions perpendicular to the edges. This helps to limit the number of dimensions of corrugated metal sheet to be produced, thereby reducing the manufacturing costs of the tank.
[0026] In one embodiment, the step of dimensioning the corrugated metal sheet comprises: - providing a corrugated metal sheet blank having an initial dimension in a direction perpendicular to said edges; - calculating a cutting length for the corrugated metal sheet blank based on the at least one second measured dimension and the initial dimension; - cutting the corrugated metal sheet blank to the cut length to obtain the corrugated metal sheet; It has.
[0027] In one embodiment, the initial dimensions of the corrugated metal sheet blank are determined depending on the position of the corrugated metal sheet in the first tank wall.
[0028] In one embodiment, the method includes filling a gap between the first and second insulating panels with at least one insulating element.
[0029] In one embodiment, the corrugated metal sheet has at least one welded edge for lap welding with another corrugated metal sheet of the sealing membrane of the first tank wall.
[0030] In one embodiment, the corrugated metal sheet has a first row of corrugations extending parallel to one another in a direction perpendicular to the edge, and a second row of corrugations extending parallel to one another in a direction parallel to the edge.
[0031] In one embodiment, the first primary insulation panel comprises an interior plate, an exterior plate, and a polymer foam block sandwiched between the interior and exterior plates.
[0032] In one embodiment, the insulating barrier of the first tank wall is a secondary insulating barrier, and the first tank wall further comprises a primary insulating barrier; The primary insulating barrier comprises: a first insulating block disposed on the first insulating panel and supporting a surface of the steel metal angle; a second insulating block arranged on the second insulating panel and supporting the metal plate; a bridge element arranged between the first and second insulating blocks; Equipped with The step of installing the corrugated metal sheet across the first insulation panel and the second insulation panel includes placing the corrugated metal sheet over the bridge element so that a first edge of the corrugated metal sheet overlaps a portion of the face of the steel metal angle and so that a second edge of the corrugated metal sheet overlaps a portion of the metal plate.
[0033] In one embodiment, the method further comprises calculating a cut length for the bridge element based on the at least one second measured dimension and the geometric definition of the first tank wall, and cutting the bridge element to the calculated cut length.
[0034] In one embodiment, the first tank wall further comprises a secondary sealing membrane disposed between the secondary insulating barrier and the primary insulating barrier.
[0035] In one embodiment, the secondary sealing membrane is made from a composite material including aluminum sheet and glass fiber and is bonded to the secondary insulating barrier and the primary insulating barrier.
[0036] The present invention can be better understood, and other objects, details, features and advantages of the present invention will become more apparent, by reading the following description of several specific exemplary embodiments of the present invention with reference to the accompanying drawings, in which the specific exemplary embodiments are merely illustrative and are not intended to limit the present invention. [Brief explanation of the drawings]
[0037] [Figure 1] 1 is an excerpt of a load-bearing structure configured to receive a sealed, insulated tank. FIG. [Figure 2] FIG. 2 is a partial perspective view of two walls of a sealed, insulated tank assembled to the load-supporting structure of FIG. 1. [Figure 3A]2 is a schematic diagram of the side wall of the load-bearing structure of FIG. 1, showing the positioning lines and edge lines used to position the insulation panels in the wall of the sealed insulated tank shown in FIG. 1. [Figure 3B] FIG. 3B is a view similar to FIG. 3A, but showing an additional set of positioning lines. [Figure 4A] 3B is a cross-sectional view of the wall of FIG. 2 showing the assembly of one of the tank walls of FIG. 2 using the positioning lines and edge lines of FIG. 3A or FIG. 3B. [Figure 4B] FIG. 4B is an enlarged view of detail B of FIG. 4A. [Figure 5] 4B is a flow chart showing the steps of a method for assembling the tank shown in FIGS. 2 and 4A. [Figure 6] 4B is a flowchart showing the steps of another method for assembling the tank shown in FIGS. 2 and 4A. FIG. DETAILED DESCRIPTION OF THE INVENTION
[0038] FIG. 1 shows a load-supporting structure 1 configured to receive the wall of a sealed, insulated tank. The load-supporting structure 1 is formed by the double hull of a ship. The overall shape of the load-supporting structure 1 is a polygon. The load-supporting structure 1 has transverse walls 2, which are typically provided at the front and rear and are octagonal in shape in this case. Only a portion of the forward transverse wall 2 is shown in FIG. 1 so that the interior space 9 of the load-supporting structure 1 can be seen. The transverse wall 2 is a cofferdam wall of the ship and extends transversely across the longitudinal direction of the ship. The load-supporting structure 1 also has an upper wall 3, a lower wall 4, and side walls 5. The upper wall 3, the lower wall 4, and the side walls 5 extend longitudinally of the ship and connect the forward transverse wall 2 to the aft transverse wall 2.
[0039] The top wall 3 has, adjacent the rear lateral wall 2, an upwardly projecting parallelepiped-shaped space, called the liquid dome 6. The liquid dome 6 defines an opening 7 in the top wall 3 for the passage of liquid transfer passages to and from the tank when the tank is mounted on the load-bearing structure 1.
[0040] The load-bearing walls 2, 3, 4, 5 of the load-bearing structure have inner surfaces 10 that define an interior space 9 on which the tank is mounted. The tank comprises a plurality of tank walls, each tank wall being fixed to a corresponding one of the load-bearing walls 2, 3, 4, 5 of the load-bearing structure 1.
[0041] FIG. 2 is a partial perspective view of a first tank wall 20 secured to one of the side walls 2 and a second tank wall 140 secured to the bottom wall 4. Reference numeral 99 denotes the edge of the load-bearing structure 1 where the side wall 2 and the bottom wall 4 meet. Due to the geometry of the load-bearing structure 1 shown in FIG. 1, the side wall 2 and the bottom wall 4 form a 90° angle as shown in FIG. 2, but the assembly principles described below can be applied to any pair of load-bearing walls of the load-bearing structure 1 shown in FIG. 1, as long as they meet at an edge. Furthermore, the geometry of the load-bearing structure 1 shown in FIG. 1 is merely exemplary, and the angle shown in FIG. 2 can be other angles, in particular about 135°.
[0042] First, the structure of the tank walls 20 and 140 will be described with reference to FIG.
[0043] As shown in FIG. 2, the tank wall 20 comprises, in the thickness direction of the tank wall 20 from the outside to the inside of the tank, a secondary insulating barrier 30, a secondary sealing membrane 50, a primary insulating barrier 60, and a primary sealing membrane 80.
[0044] The secondary insulation barrier 30 comprises a row of corner insulation panels 31 arranged along the edge 99 and parallel rows of flat insulation panels 35, one of which is aligned with the row of corner panels 31. To avoid overcomplicating the drawing, Figure 2 shows only one corner panel 31 and two of the two rows of flat panels 35 closest to the corner panel 31. Of course, the number of rows of flat panels 35 and the number of panels 31 or 35 per row can be adjusted depending on the dimensions of the load-bearing wall 2.
[0045] Figure 4A is a cross-sectional view perpendicular to edge 99 of Figure 2, which provides a better view of the structure of corner panel 31 and flat panel 35 disposed along corner panel 31. Although only a portion of one flat panel 35 is shown in Figure 4A, all flat panels can have the same structure. Figure 4B is an enlarged view of detail B of Figure 4A.
[0046] The corner panel 31 includes two parallel, spaced-apart plates 32 and 33, each made of plywood, for example. The plates 32 and 33 sandwich a block 34 of insulating foam, such as polyurethane foam, optionally reinforced with fiberglass. The block 34 may be glued to the plates 32 and 33, for example. The block 34 has a beveled surface 34A that allows it to connect with a similar beveled surface on a corner panel 131 of the secondary insulating barrier 130 of the tank wall 140, which is similar to the corner panel 31. One or more shims 95 are disposed between the corner panel 31 and the side wall 2. The thickness of the shim 95 can be determined, as is known, to compensate for any dimensional differences between the ideal and actual shape of the side wall 2. A mastic bead (not shown) may be applied between the corner panel 31 and the side wall 2. Similarly, one or more shims 195 similar to shim 95 can be placed between the corner panel 131 and the lower wall 4, and it is also possible to apply a mastic bead (not shown) between the corner panel 131 and the lower wall 4.
[0047] The flat panel 35 includes a bottom plate 36, made of, for example, plywood, on which a block 37 of insulating foam, such as polyurethane foam, optionally reinforced with glass fiber, is placed. The block 37 may be glued to the bottom plate 36. An impermeable composite sheet 51 (shown in FIG. 2) is glued to the top surface of the block 37 to form one element of the secondary sealing membrane 50. One or more shims 93 are placed between the flat panel 35 and the side wall 2. The thickness of the shims 93 can be determined, as is known, to compensate for any dimensional differences between the ideal and actual shape of the side wall 2. A mastic bead (not shown) can also be applied between the flat panel 35 and the side wall 2. Additionally, a shim 94, which performs the same function as shims 93 and 95, can be placed between the side wall 2, the corner panel 31, and an insulating element 97 (described below), below the interface between the corner panel 31 and the insulating element 97.
[0048] The secondary sealing membrane 50 may be made entirely from a three-layer composite comprising an aluminum sheet and glass fibers bonded to the aluminum sheet using a polyamide resin known as Triplex.
[0049] The primary insulating barrier 60 comprises a primary corner block 61 above the corner panel 31, which supports a surface 71 of an iron metal angle 79. In the illustrated example, the primary corner block 61 comprises a wooden plate 62 and an insulating element 63 made of, for example, polyurethane foam or glass wool, to which the surface 71 is fixed, for example, by screws.
[0050] The primary insulation barrier 60 includes a primary flat block 65 above the flat panel 35. The primary flat block 65 includes a block 66 of insulating foam, such as polyurethane foam, disposed on an impermeable composite sheet 51, and a cover plate 67, made of, for example, plywood, disposed on the block 66, the insulating foam optionally being reinforced with fiberglass. The block 66 may be glued to the cover plate 67, for example. As is known, the primary flat block 65 may have stress relief slots 66R below the corrugations 82.
[0051] A bridge element 68 is disposed between the primary corner block 61 and the primary flat block 65 so as to straddle the corner panel 31 and the flat panel 35 and rest on them. The bridge element 68 includes a block 68A of insulating foam, such as polyurethane foam, and a cover plate 68B, made of, for example, plywood, disposed on the block 68A. The insulating foam of the block 68A is optionally reinforced with glass fiber. The bridge element 68 can be divided into multiple sub-elements 68D, as shown in FIG. 2.
[0052] Between the two flat panels 35, a joining strip 52 is added between the primary flat blocks 65 and below the bridge elements 68 to the secondary sealing membrane 50, which is glued to, for example, an impermeable composite sheet 51.
[0053] To simplify the assembly of the thermal insulation barriers 30 and 60 and the secondary sealing membrane 50, each flat panel 35 can be integrated with a primary flat block 65 in the form of a prefabricated, standard-sized insulating element outside the interior space of the tank, for example according to the principle described in patent application FR 2 691 520. An impermeable composite sheet 51 can be glued to the upper surface of the block 37 of flat panels 35, in particular outside the interior space of the tank.
[0054] Furthermore, to simplify the construction of the corner panel 31, said panel may be integrated with a primary corner block 61 in the form of a prefabricated insulating element, as is known.
[0055] The panels 31 and 35 are secured to the load-bearing wall 2 by well-known fastening means (not shown) which traverse the panels 31 and 35. Reference numeral 98 denotes an insulating plug which covers the fastening means.
[0056] The primary sealing membrane 80 includes a corrugated metal sheet 81, only one of which is shown in FIG. 2 to avoid overcomplicating the drawing. The corrugated metal sheet 81 is made of a metal alloy, such as stainless steel. The corrugated metal sheet 81 has a welded edge 85, as is well known in the art, to allow the sheets to be lap welded together. The corrugated metal sheet 81 has rows of corrugations 82 parallel to the edge 99 and rows of corrugations 83 perpendicular to the edge 99, which allow the corrugated metal sheet 81 to withstand thermal contraction due to contact with liquefied gas. Reference numeral 84 designates nodes located at the intersections of the corrugations 82 and 83.
[0057] To secure the primary sealing membrane 80 to the insulating barrier 60, the respective cover plates 65 and 68B of the primary flat block 65 and bridge element 68 support metal plates 65P and 68P, respectively, in a known manner.
[0058] As is also known, the ends of the corrugations 83 can fit into sleeves 86 supported by the steel metal angle 79. The steel metal angle 79 can also support sleeves 186 which are aligned with the sleeves 86 that receive the ends of the vertical corrugations 183 of the corrugated primary membrane 180 of the tank wall 140, so that each corrugation 83 is continuously connected to each corresponding vertical corrugation 183.
[0059] Although each corrugated metal sheet 81 can in principle be made to dimensions that allow it to be accurately positioned in the tank wall 20, it would be ideal to be able to select each corrugated metal sheet 81 from a set of corrugated metal sheets of predetermined dimensions to facilitate assembly of the primary sealing membrane 80, and therefore of the tank wall 20. In practice, the load-bearing structure 1 may have some dimensional deviations from the ideal polyhedral shape for which it is designed, which may prevent the full continuity between the corrugations of the sheets that would be achieved if the sheets were of predetermined dimensions. However, such continuity is very important to ensure good mechanical strength of the primary sealing membrane 80.
[0060] 4A and 5, an assembly method 300 will now be described that provides excellent mechanical strength for the primary sealing membrane 80 even when the sheets that make up the membrane are of predetermined dimensions.
[0061] The first step 301 of the method 300 is to obtain a geometric definition of the tank wall 20. This geometric definition is: - dimension a (see FIG. 4A) representing the dimension of the corner panel 31 in a direction perpendicular to the edge 99; - Dimension b of the flat panel 35 in a direction perpendicular to the edge 99 (see Figures 2, 3 and 4A).
[0062] After step 301, the method 300 proceeds to step 302, which includes drawing edge lines 18 and positioning lines 17 on the load-bearing wall 2. This step will be described in more detail with reference to Figures 3 and 4A.
[0063] 3A, edge line 18 is drawn at a fixed distance, in this case equal to dimension a, from edge 99. Edge line 18 can be used to position corner panel 31, as described below.
[0064] The locating line 17 is drawn as follows.
[0065] First, draw a center line 14 of the load-bearing wall 2 that is parallel to the edge 99. By "center," we mean that the center line 14 divides the load-bearing wall 2 into two equal walls of equal surface area. In the example shown, the center line 14 is the vertical central axis of the tank. Thus, a plane perpendicular to the load-bearing wall 2 that contains the center line 14 divides the interior volume of the tank into two equal portions.
[0066] The vertical central axis of the tank may pass through the liquid dome 6 as shown in FIG.
[0067] Next, a plurality of locating lines 17 are drawn from the center line 14 to the edge line 18. These locating lines 17 are parallel to each other and to the edge 99, and the distance between the locating lines 17 is equal to the dimension b. Note that the first locating line 17 does not necessarily coincide with the center line 14. Also, the locating line 17 ends before the edge line 18; that is, no locating line 17 is drawn between the edge line 18 and the edge 99. The last locating line 17 can be used to position the flat panel 35 in line with the corner panel 31, as described below. The other locating lines 17 can be used to position the flat panels 35 in other rows.
[0068] Optionally, in step 302, positioning lines 16 may be drawn that are parallel to each other and perpendicular to edge 99, with a separation between them equal to dimension b2, as shown in FIG. 3B. Positioning lines 16 are also not drawn between edge line 18 and edge 99. Dimension b2 is also the dimension of flat panel 35 in a direction parallel to edge 99. The positioning lines 16 can then be used to position other rows of flat panels 35. Note that dimension b2 is not necessarily equal to dimension b.
[0069] Referring back to FIG. 4A, after drawing the edge line 18 and the positioning line 17, there may remain a surplus distance marked with x in the direction orthogonal to the edge 99 between the edge line 18 and the last positioning line 17. The "last positioning line 17" means the positioning line 17 closest to the edge line 18. Considering that no positioning line 17 is drawn between the edge line 18 and the edge 99, the last positioning line 17 is separated from the edge line 18 by a distance shorter than the dimension b. That is, x < b. The dimensions of the load-bearing wall 2 and the values of the dimensions a and b can be arbitrarily selected such that the dimension x does not become zero without considering the dimensional deviation from the ideal polyhedral shape in the design of the load-bearing structure 1. In this way, the heat insulation elements 97, 91 described above can be arranged in this gap. However, the dimension x can vary due to the dimensional deviation from the polyhedral shape in the design of the load-bearing structure 1.
[0070] In this way, after step 302, the method 300 proceeds to step 303, which includes obtaining at least one measured dimension represented by x. In one variant form, the obtaining of the above-mentioned measured dimension can simply include measuring the shortest distance in the direction orthogonal to the edge 99 between the edge line 18 and the last positioning line 17. However, other measurement methods are also possible. Also, for each corrugated sheet 81, a plurality of measured dimensions represented by x can be obtained. In a special variant form, the distance between the edge line 18 and the last positioning line 17 is measured in the direction orthogonal to the edge 99 at a plurality of locations spaced parallel to the edge 99, for example, 3 to 5 locations.
[0071] After step 303, the method 300 proceeds to steps 304A, 304B, 305 and 306 described below.
[0072] In step 304A, a corrugated metal sheet blank having an initial dimension in the direction orthogonal to the edge 99 is prepared. This initial dimension can be determined depending on the position of the corrugated metal sheet 81 straddling the corner panel 31 and the flat panel 35 in the first tank wall 20.
[0073] After step 304A, the method 300 proceeds to step 304B, which includes calculating a cut length within the corrugated metal sheet blank based on at least one measured dimension obtained in step 303 and the initial dimensions of the blank.
[0074] After step 304B, method 300 proceeds to step 305, which includes cutting the corrugated metal sheet blank to the length calculated in step 304B to obtain a corrugated metal sheet 81 that spans the corner panel 13 and the flat panel 35.
[0075] Step 306 includes placing the corner panel 31 between the edge 99 and the edge line 18 so that one side of the corner panel 31 opposite the edge 99 is aligned with the edge line 18, and placing the flat panel 35 next to the corner panel 31 so that one side of the flat panel 35 on the corner panel 31 side is aligned with the last positioning line 17.
[0076] It should be noted that steps 304A, 304B, 305 and 306 may be performed in any order depending on architectural requirements.
[0077] Upon completion of steps 305 and 306, the positioning of corner panel 31 with adjacent flat panel 35 shown in FIG. 4A is achieved.
[0078] If necessary, after this positioning, insulating elements 91 and 97 are installed in the gap of dimension x between corner panel 31 and the adjacent flat panel 35. Each of insulating elements 91 and 97 can be, for example, a separate block of glass fiber or otherwise reinforced polyurethane foam, a plug of glass wool, or a layer of folded glass wool. In one advantageous variant, insulating element 97 is a block of glass fiber or otherwise reinforced polyurethane foam, and insulating element 91 is a plug of glass wool or a layer of folded glass wool. In one variant, only one insulating element 91 or 97, which together fills the entire gap of dimension x, can be inserted in the gap.
[0079] Thereafter, the strips forming the secondary sealing membrane 50 and the bridge element 68, and the primary corner block 61 and the primary flat block 65, if they are not integral with the corner panel 31 and its adjacent flat panel 35 as described above, are installed.
[0080] The dimensions of the insulating elements 91 and / or 97 and / or the dimensions of the bridge element 68 can be adjusted by blind cutting during installation. However, in an optional step 307A, it is also possible to calculate the cut length for said elements based on at least one measured dimension obtained in step 303 and the geometric definition obtained in step 301. Then, in step 307B, said elements are cut to the calculated cut length.
[0081] After optional steps 307A and 307B, method 300 proceeds to step 308, which includes installing a corrugated metal sheet 81 across the corner panel 31 and the adjacent flat panel 35. Specifically, since the primary insulating barrier 60 is present, the corrugated metal sheet 81 is placed over the bridge element 68 as follows: - one edge of the corrugated metal sheet 81 overlaps part of the surface 71 of the steel metal angle 79; and Another edge of the corrugated metal sheet 81 is placed over a portion of the metal plate 65P (not shown in FIG. 4A but shown in FIG. 2) supported by the cover plate 67 of the primary flat block 65 supported by the adjacent flat panel 35.
[0082] Cutting the corrugated metal sheet blank to obtain the corrugated metal sheet 81 as described above helps to compensate for any dimensional deviations from the ideal polyhedral shape for which the load-bearing structure 1 is designed, particularly in the metal sheet 81 closest to the edge 99. This allows the corrugated metal sheet blank to be selected from a set of blanks of predetermined dimensions.
[0083] However, instead of the above, the dimensions of the corrugated metal sheet 81 that spans the corner panel 31 and the flat panel 35 in the first tank wall 20 may be any other suitable dimension based on at least one actual measurement dimension obtained in step 303.
[0084] Steps 301, 304B and 307A can also be performed by means of a suitable computer program running on a computer. In such a case, step 301 can include loading a geometric definition of the tank previously stored in memory. A user of the computer program can input the results of at least one dimensional measurement obtained in step 303 into the computer program, which then performs the calculations of steps 304B and 307A.
[0085] Additionally, although at least one measured dimension (step 303) for a particular corrugated metal sheet 81 has been described, steps 303-308 above may be performed for multiple corrugated metal sheets 81 in the tank wall 20, and may also be performed for similar corrugated metal sheets in some or all of the tank walls of the tank.
[0086] The method 300 described above uses one or more actual measurements for a particular corrugated metal sheet 81 that represent the distance between the edge line 18 and the last locating line 17. These actual measurements are taken before the corner panel 31 and its adjacent flat panel 35 are installed.
[0087] As noted above, one or more shims 195 may be placed between the corner panel 131 of the secondary insulation panel 130 of the tank wall 140 and the underlying load-bearing wall 4. Referring again to Figure 4A, if the thickness of the shim 195 is increased by a certain distance, the position of the corner panel 31 will be offset by the same distance toward the adjacent flat panel 35. This change in the position of the panel 31 may be ignored, particularly if the thickness of the shim 195 is negligible relative to the dimensional tolerances of the corrugated metal sheet 81 and / or the dimensions of the welded edge 85 of the corrugated metal sheet 81. Even so, the thickness of the shim 195 need not be included in the above dimension a.
[0088] However, it may be desirable to take the thickness of the shim 195 into account when determining the dimensions of the corrugated metal sheet 81. To do this, the thickness of the shim 195 can be included in the above-mentioned dimension a. The dimensioning of the shim 195 can be determined at least depending on the actual dimensions previously measured on the lower wall 4. The above-mentioned dimensioning can also be determined depending on other actual dimensions and / or on whether one or more criteria are met, in particular depending on the minimum thickness of the shim 195.
[0089] Another assembly method 400 that allows for the above is described below with reference to FIGS. 4A and 6.
[0090] The first step 401 of the method 400 is the same as step 301, in which a geometric definition of the tank wall 20 is obtained. This geometric definition is: - dimension a (see FIG. 4A) representing the dimension of the corner panel 31 in a direction perpendicular to the edge 99; - Dimension b of the flat panel 35 in a direction perpendicular to the edge 99 (see Figures 2, 3 and 4A).
[0091] The shim 195 is dimensioned in step 402 of the method 400. This dimensioning is based on at least a first measured dimension previously measured on the lower wall 4. The dimensioning may also be based on other measured dimensions and / or on whether one or more criteria are met, in particular a minimum thickness of the shim 195.
[0092] In step 403 of method 400, positioning lines 17 are drawn on the load-bearing wall. Positioning lines 17 are drawn in exactly the same manner as described above for step 302, and will not be described in detail again. In step 403, positioning lines 16 and / or edge lines 18 can optionally be drawn in the manner described above with reference to step 302.
[0093] Steps 402 and 403 can be performed in any order as desired.
[0094] After steps 402 and 403, method 400 proceeds to step 404, where shim 195, corner panel 131, corner panel 31, and flat panel 35 aligned with corner panel 31 are installed. Specifically, shim 195 is installed on bottom wall 4, corner panel 131 is installed so that it rests on shim 195, corner panel 31 is installed so that it faces corner panel 131, and flat panel 35 is installed on side wall 2 so that one edge of flat panel 35 facing corner panel 31 is aligned with last positioning line 17. Panels 131, 31, and 35 can be installed in any order as needed; however, to avoid the risk of flat panel 35 interfering with the installation of corner panels 131 and 31, flat panel 35 is preferably installed after corner panels 131 and 31 are installed. Of course, if shims 95, 94 and 93 are provided, they are installed in the side wall 2 before the corner panel 31 and the flat panel 35 next to it are installed.
[0095] 4A is achieved. As noted above, the positioning of the corner panel 31 depends on the thickness of the shim 195. Furthermore, as noted above with reference to step 303, an excess distance x remains between the edge of the flat panel 35 that aligns with the last positioning line 17 and the opposite edge of the corner panel 31.
[0096] Thus, after step 404, method 400 proceeds to step 405, which includes obtaining at least one second measured dimension representing x. In one variation, obtaining the second measured dimension may simply involve measuring the shortest distance between the edge of flat panel 35 aligned with last positioning line 17 and the opposite edge of corner panel 31 in a direction perpendicular to edge 99. However, other measurement techniques are possible. Also, multiple second measured dimensions representing x may be obtained for each corrugated sheet 81. In one particular variation, the distance between the edge of flat panel 35 aligned with last positioning line 17 and the opposite edge of corner panel 31 in a direction perpendicular to edge 99 is measured at multiple locations, e.g., three to five locations, spaced apart parallel to edge 99.
[0097] After step 405, method 400 proceeds to steps 406A, 406B, and 407, which are described below.
[0098] In step 406A, a corrugated metal sheet blank is prepared having an initial dimension in a direction perpendicular to the edge 99. This initial dimension can be determined depending on the position of the corrugated metal sheet 81 that straddles the corner panel 31 and the flat panel 35 in the first tank wall 20.
[0099] After step 406A, the method 400 then proceeds to step 406B, which includes calculating a cut length within the corrugated metal sheet blank based on the at least one second measured dimension obtained in step 404 and the initial dimensions of the blank.
[0100] After step 406B, the method 400 proceeds to step 407, which includes cutting the corrugated metal sheet blank to the length calculated in step 406B to obtain a corrugated metal sheet 81 that spans the corner panel 13 and the flat panel 35.
[0101] If necessary, after said positioning, the insulating elements 91 and 97 already described above are installed in the gap of dimension x between the corner panel 31 and the adjacent flat panel 35 .
[0102] Thereafter, the strips forming the secondary sealing membrane 50 and the bridge element 68, and the primary corner block 61 and the primary flat block 65, if they are not integral with the corner panel 31 and its adjacent flat panel 35 as described above, are installed.
[0103] The dimensions of the insulating elements 91 and / or 97 and / or the dimensions of the bridge element 68 can be adjusted by blind cutting during installation. However, in an optional step 408A, it is also possible to calculate a cut length for said elements based on at least one second measured dimension obtained in step 404 and the geometric definition obtained in step 401. Then, in step 408B, said elements are cut to the calculated cut length.
[0104] After optional steps 408A and 408B, method 400 proceeds to step 409, which includes installing a corrugated metal sheet 81 across the corner panel 31 and the adjacent flat panel 35. Specifically, since the primary insulating barrier 60 is present, the corrugated metal sheet 81 is placed over the bridge element 68 as follows: - one edge of the corrugated metal sheet 81 overlaps part of the surface 71 of the steel metal angle 79; and Another edge of the corrugated metal sheet 81 is placed over a portion of the metal plate 65P (not shown in FIG. 4A but shown in FIG. 2) supported by the cover plate 67 of the primary flat block 65 supported by the adjacent flat panel 35.
[0105] Cutting the corrugated metal sheet blank to obtain the corrugated metal sheet 81 as described above helps to compensate for any dimensional deviations from the ideal polyhedral shape for which the load-bearing structure 1 is designed, particularly in the metal sheet 81 closest to the edge 99. This allows the corrugated metal sheet blank to be selected from a set of blanks of predetermined dimensions.
[0106] However, instead of the above, the dimensions of the corrugated metal sheet 81 that spans the corner panel 31 and the flat panel 35 in the first tank wall 20 may be any other suitable dimension based on at least one second measured dimension obtained in step 404.
[0107] Steps 401, 406B, and 408A can also be performed using a suitable computer program executed on a computer. In such a case, step 401 can include loading a geometric definition of the tank previously stored in memory. A user of the computer program can input the results of the at least one second dimensional measurement obtained in step 404 into the computer program, which then performs the calculations of steps 406B and 408A.
[0108] Additionally, the sizing of the shim 195 in step 402 may be performed using a suitable computer program executed on a computer.
[0109] Additionally, although at least one second measured dimension (step 404) has been described for a particular corrugated metal sheet 81, steps 404-409 above may be performed for multiple corrugated metal sheets 81 of the tank wall 20, and may also be performed for similar corrugated metal sheets of some or all of the tank walls of the tank.
[0110] In one variant, the tank wall 20 can be a single membrane wall, i.e., a wall comprising the primary sealing membrane 80 but not the secondary sealing membrane 50. In another variant, the secondary sealing membrane 50 can be made using other techniques, for example using multiple corrugated sheets welded together, similar to the primary sealing membrane 80. In such a case, assembly of the tank wall 20 is performed exactly as described above for the secondary insulating barrier 30 and the primary sealing membrane 80.
[0111] In another variation, the tank wall 20 can be a single-barrier, single-membrane wall comprising only the above-described secondary insulating barrier 30 and primary sealing membrane 80. In such a case, the tank wall 20 is assembled exactly as described above, except that the sheet 81 straddles the corner panel 31 and the adjacent flat panel 35 without an insulating block in between.
[0112] Although the present invention has been described with reference to several specific embodiments, it is clear that the present invention is in no way limited to these embodiments, and includes all technical equivalents of the means described in this application and combinations thereof, when falling within the scope of the present invention.
[0113] The use of the verbs "comprise" or "include" including their conjugations does not exclude the presence of elements or steps other than those stated in a claim.
[0114] In the claims, any reference signs in parentheses shall not be construed as limiting the scope of the claims.
Claims
1. 1. An assembly method (300) for a sealed insulated tank assembled to a load-bearing structure (1), comprising: The sealed, insulated tank comprises a first tank wall (20) fixed to a first load-bearing wall (2) and a second tank wall (140) fixed to a second load-bearing wall (4) connecting with the first load-bearing wall (2) at an edge (99) of the load-bearing structure (1), the first tank wall (20) and the second tank wall (140) each comprise a sealing membrane and a thermal insulating barrier disposed between the sealing membrane and the load-bearing wall; The insulating barrier (30) of the first tank wall (20) comprises: a first insulating panel (31) disposed along the edge (99); a second insulating panel (35) arranged along an edge of the first insulating panel (31) in line with the first insulating panel (31) on the side opposite to the second load-bearing wall (4); Equipped with The sealing membrane (80) of the first tank wall (20) comprises a corrugated metal sheet (81) spanning the first insulating panel (31) and the second insulating panel (35); The assembly method (300) comprises: obtaining (301) a geometric definition of the first tank wall (20) including a dimension a of the first insulating panel (31) in a direction perpendicular to the edge (99), and a dimension b of the second insulating panel (35) in a direction perpendicular to the edge (99); drawing (302) an edge line (18) on the first load-bearing wall (2) at a distance from the edge (99) equal to the dimension a, and drawing a plurality of successive positioning lines (17) parallel to each other and spaced apart by a distance equal to the dimension b from a center line (14) of the first load-bearing wall (2) toward the edge line (18) parallel to the edge (99), with the last positioning line (17) of the plurality of positioning lines (17) being spaced apart from the edge line (18) by a distance less than the dimension b; obtaining (303) at least one measured dimension representing the distance between said edge line (18) and said final positioning line (17) in a direction perpendicular to said edge (99); determining dimensions of the corrugated metal sheet (81) based on the at least one measured dimension; a step (306) of installing the first insulation panel (31) between the edge (99) and the edge line (18) so that one side of the first insulation panel (31) opposite to the edge (99) is aligned with the edge line (18), and installing the second insulation panel (35) so that one side of the second insulation panel (35) on the first insulation panel (31) side is aligned with the last positioning line (17); a step (308) of installing the corrugated metal sheet (81) so as to straddle the first insulation panel (31) and the second insulation panel (35); The method of assembly (300) comprising:
2. The step of determining the dimensions of the corrugated metal sheet (81) comprises: providing (304A) a corrugated metal sheet blank having an initial dimension in a direction perpendicular to said edge (99); calculating a cut length for the corrugated metal sheet blank based on the at least one measured dimension and the initial dimension (304B); cutting (305) the corrugated metal sheet blank to the cut length to obtain the corrugated metal sheet (81); The method (300) of claim 1, comprising:
3. the initial dimensions of the corrugated metal sheet blank are determined depending on the position of the corrugated metal sheet (81) in the first tank wall (20); The method (300) of claim 2.
4. The method further comprises filling a gap between the first insulating panel (31) and the second insulating panel (35) with at least one insulating element (91, 97). The assembly method (300) of any one of claims 1 to 3.
5. The corrugated metal sheet (81) has at least one edge (85) for lap welding with another corrugated metal sheet of the sealing membrane (80) of the first tank wall (20). The assembly method (300) of any one of claims 1 to 3.
6. The dimension a is the dimension of the first insulation panel (31) in a direction perpendicular to the edge (99). The assembly method (300) of any one of claims 1 to 3.
7. the thermal insulation barrier (130) of the second tank wall (140) comprises a third thermal insulation panel (131) arranged along the edge (99) on the side of the first thermal insulation panel (31), and at least one spacer element (195) arranged between the third thermal insulation panel (131) and the second load-bearing wall (4); the dimension a is the sum of the dimension of the first insulation panel (31) in a direction perpendicular to the edge (99) and the dimension of the spacer element (195) in a direction perpendicular to the edge (99); The assembly method (300) of any one of claims 1 to 3.
8. the thermal barrier (30) is a secondary thermal barrier, and the first tank wall (20) further comprises a primary thermal barrier (60); The primary insulating barrier (60) comprises: a first insulating block (61) disposed on the first insulating panel (31) and supporting a surface (71) of the iron metal angle (79); a second insulating block (65) disposed on the second insulating panel (35) and supporting a metal plate (65P); a bridge element (68) disposed between the first insulating block (61) and the second insulating block (65); Equipped with The step (308) of installing the corrugated metal sheet (81) so as to straddle the first insulation panel (31) and the second insulation panel (35) includes placing the corrugated metal sheet (81) over the bridge element (68) so that a first edge of the corrugated metal sheet (81) overlaps a portion of the surface (71) of the iron metal angle (79) and a second edge of the corrugated metal sheet (81) overlaps a portion of the metal plate (65P). The assembly method (300) of any one of claims 1 to 3.
9. calculating (307A) a cut length for the bridge element (68) based on the at least one measured dimension and the geometric definition of the first tank wall (20); The method (300) of claim 8, further comprising the step (307B) of cutting the bridge element (68) to the calculated cut length.
10. The first tank wall (20) further comprises a secondary sealing membrane (50) disposed between the secondary insulating barrier (30) and the primary insulating barrier (60); The secondary sealing membrane (50) is preferably made of a composite material including aluminum sheet and glass fiber and is bonded to the secondary insulating barrier (30) and the primary insulating barrier (60). The method (300) of claim 8.
11. 1. An assembly method (400) for a sealed insulated tank assembled to a load-bearing structure (1), comprising: The sealed, insulated tank comprises a first tank wall (20) fixed to a first load-bearing wall (2) and a second tank wall (140) fixed to a second load-bearing wall (4) connecting with the first load-bearing wall (2) at an edge (99) of the load-bearing structure (1), the first tank wall (20) and the second tank wall (140) each comprise a sealing membrane and a thermal insulating barrier disposed between the sealing membrane and the load-bearing wall; The insulating barrier (30) of the first tank wall (20) comprises: a first insulating panel (31) disposed along the edge (99); a second insulating panel (35) arranged along an edge of the first insulating panel (31) in line with the first insulating panel (31) on the side opposite to the second load-bearing wall (4); Equipped with The sealing membrane (80) of the first tank wall (20) comprises a corrugated metal sheet (81) spanning the first insulating panel (31) and the second insulating panel (35); the thermal insulation barrier (130) of the second tank wall (140) comprises a third thermal insulation panel (131) arranged along the edge (99) on the side of the first thermal insulation panel (31), and at least one spacer element (195) arranged between the third thermal insulation panel (131) and the second load-bearing wall (4); The assembly method includes: obtaining (401) a geometric definition of the first tank wall (20) including a dimension b of the second insulation panel (35) in a direction perpendicular to the edge (99); Dimensioning (402) said at least one spacer element (195) at least in dependence on said first measured dimension obtained for said second load-bearing wall (4); drawing (403) a plurality of successive locating lines (17) on the first load-bearing wall (2) parallel to each other and spaced apart by a distance equal to the dimension b, from the center line (14) of the first load-bearing wall (2) toward the edge (99) and parallel to the edge (99), wherein the last locating line (17) of the plurality of locating lines (17) is spaced from the edge (99) by a distance at least equal to the dimension of the first insulation panel (31) in a direction perpendicular to the edge (99) plus b; installing the at least one spacer element (195) on the second load-bearing wall (4), installing the third insulation panel (131) on the second load-bearing wall (4) along the edge (99) so that the third insulation panel (131) is attached to the at least one spacer element (195), installing the first insulation panel (31) on the first load-bearing wall (2) along the edge (99) on the side of the third insulation panel (131), and installing the second insulation panel (35) on the first load-bearing wall (2) so that one side of the second insulation panel (35) on the side of the first insulation panel (31) is aligned with the last positioning line (17); obtaining (405) at least one second measured dimension representing the distance between the side of the second insulating panel (35) and the edge of the first insulating panel (31) in a direction perpendicular to the edge (99); determining dimensions of the corrugated metal sheet (81) based on the at least one second measured dimension; a step (409) of installing the corrugated metal sheet (81) so as to straddle the first insulation panel (31) and the second insulation panel (35); The method of assembly (400) comprising:
12. The step of determining the dimensions of the corrugated metal sheet (81) comprises: providing (406A) a corrugated metal sheet blank having an initial dimension in a direction perpendicular to said edge (99); calculating (406B) a cut length for the corrugated metal sheet blank based on the at least one second measured dimension and the initial dimension; cutting (407) the corrugated metal sheet blank to the cut length to obtain the corrugated metal sheet (81); The method of claim 11, further comprising:
13. filling a gap between the first insulating panel (31) and the second insulating panel (35) with at least one insulating element (91, 97); 13. The assembly method according to claim 11 or 12.
14. the initial dimensions of the corrugated metal sheet blank are determined depending on the position of the corrugated metal sheet (81) in the first tank wall (20); The assembly method according to claim 12.
15. The corrugated metal sheet (81) has at least one edge (85) for lap welding with another corrugated metal sheet of the sealing membrane (80) of the first tank wall (20).
13. The assembly method according to claim 11 or 12.
16. the insulating barrier (30) of the first tank wall (20) is a secondary insulating barrier, and the first tank wall (20) further comprises a primary insulating barrier (60); The primary insulating barrier (60) comprises: a first insulating block (61) disposed on the first insulating panel (31) and supporting a surface (71) of the iron metal angle (79); a second insulating block (65) disposed on the second insulating panel (35) and supporting a metal plate (65P); a bridge element (68) disposed between the first insulating block (61) and the second insulating block (65); Equipped with The step (409) of installing the corrugated metal sheet (81) so as to straddle the first insulation panel (31) and the second insulation panel (35) includes placing the corrugated metal sheet (81) over the bridge element (68) so that a first edge of the corrugated metal sheet (81) overlaps a portion of the surface (71) of the iron metal angle (79) and a second edge of the corrugated metal sheet (81) overlaps a portion of the metal plate (65P).
13. The assembly method (300) of claim 11 or 12.
17. calculating (408A) a cut length for the bridge element (68) based on the at least one second measured dimension and the geometric definition of the first tank wall (20); The method of claim 16, further comprising the step of: cutting (408B) the bridge element (68) to the calculated cut length.
18. The first tank wall (20) further comprises a secondary sealing membrane (50) disposed between the secondary insulating barrier (30) and the primary insulating barrier (60); The secondary sealing membrane (50) is preferably made of a composite material including aluminum sheet and glass fiber and is bonded to the secondary insulating barrier (30) and the primary insulating barrier (60).
17. The assembly method of claim 16.