Abstract: A tank that has a tank wall having a secondary insulating barrier, a primary insulating barrier, a primary sealed membrane and a secondary sealed membrane, the tank wall having a first area in which the insulating modules include spacers extending in a thickness direction of the tank wall between a cover panel and a bottom panel of said insulating modules, a second area in which a cover panel of the insulating modules is kept at a distance from a bottom panel by a structural insulating foam, a transition area interposed between the first area and the second area, the transition area having a coefficient of thermal contraction and/or a modulus of elasticity in the thickness direction of the tank wall which is between that of the first area and that of the second area.

Abstract: A tank that has a tank wall having a secondary insulating barrier, a primary insulating barrier, a primary sealed membrane and a secondary sealed membrane, the tank wall having a first area in which the insulating modules include spacers extending in a thickness direction of the tank wall between a cover panel and a bottom panel of said insulating modules, a second area in which a cover panel of the insulating modules is kept at a distance from a bottom panel by a structural insulating foam, a transition area interposed between the first area and the second area, the transition area having a coefficient of thermal contraction and/or a modulus of elasticity in the thickness direction of the tank wall which is between that of the first area and that of the second area.

Abstract: A method of creating a watertightness barrier for a wall of a watertightened thermally insulating tank, involves steps of: arranging a repeating structure including alternately a strip of sheet metal and an elongate welding flange connected to the support surface, so that the turned-up lateral edges of the strip of sheet metal are positioned against the adjacent welding flanges, welding the turned-up lateral edge to the welding flange using a straight welded seam along a first longitudinal portion, continuing the straight welded seam with an end portion which is deviated in the direction of an upper edge corner, and producing a watertight edge corner welded seam along a second longitudinal portion of the strip of sheet metal such that the edge corner welded seam watertightly meets the end portion of the welded seam.

Abstract: A method of creating a watertightness barrier for a wall of a watertightened thermally insulating tank, involves steps of: arranging a repeating structure including alternately a strip of sheet metal and an elongate welding flange connected to the support surface, so that the turned-up lateral edges of the strip of sheet metal are positioned against the adjacent welding flanges, welding the turned-up lateral edge to the welding flange using a straight welded seam along a first longitudinal portion, continuing the straight welded seam with an end portion which is deviated in the direction of an upper edge corner, and producing a watertight edge corner welded seam along a second longitudinal portion of the strip of sheet metal such that the edge corner welded seam watertightly meets the end portion of the welded seam.

Abstract: Method of adhesively bonding second insulating blocks to a ship's inner hull using beads of mastic for the production of a sealed, thermally insulating tank for the transportation of liquefied gases, the tank having two successive sealing barriers alternated with two insulating barriers of first and second insulating blocks produced from plywood panels and containing or carrying thermally insulating materials, the second insulating blocks of the secondary insulating barrier being fastened directly against the inner hull, the method including applying beads of mastic to the lower face of the panels of the second insulating blocks along mutually parallel lines, positioning the second insulating blocks against the inner hull, and pressing thereof against the inner hull until polymerization of the mastic, wherein at least two of the beads on the lower face of at least one panel of the second insulating blocks are arranged along wavy parallel lines.

Abstract: Sealed, thermally insulated terrestrial tank built into a bearing structure (1), comprising a thermally insulating barrier comprising a plurality of insulating blocks (14), each insulating block comprising a plywood panel and containing or carrying thermally insulating material, the said insulating blocks (14) being fastened directly against the bearing structure (1) by means of beads (3) of mastic positioned on the panels of the said insulating blocks along mutually parallel lines, characterized in that at least two of the said beads (3) on the panel of at least one of the said insulating blocks (14) are arranged along wavy parallel lines.

Abstract: Self-supporting timber box having a base panel, lateral walls each projecting perpendicularly from one side of the base panel to delimit the profile of an internal space of the box, a plurality of internal partitions (14) which are parallel to each other and perpendicular to the base panel and which extend between the lateral walls in such a way as to divide the internal space into a plurality of compartments intended to receive a heat-insulating lining, and a cover panel, wherein it has at least one stiffening element (16) which is positioned in the internal space transversely with respect to the internal partitions and which has an area of connection (17, 18) to each of the internal partitions to increase the buckling resistance of the internal partitions, the area of connection extending over a depth greater than or equal to half of the distance between the base and cover panels.

Abstract: Method of adhesively bonding second insulating blocks to a ship's inner hull using beads of mastic for the production of a sealed, thermally insulating tank for the transportation of liquefied gases, the tank having two successive sealing barriers alternated with two insulating barriers of first and second insulating blocks produced from plywood panels and containing or carrying thermally insulating materials, the second insulating blocks of the secondary insulating barrier being fastened directly against the inner hull, the method including applying beads of mastic to the lower face of the panels of the second insulating blocks along mutually parallel lines, positioning the second insulating blocks against the inner hull, and pressing thereof against the inner hull until polymerization of the mastic, wherein at least two of the beads on the lower face of at least one panel of the second insulating blocks are arranged along wavy parallel lines.

Abstract: Self-supporting timber box having a base panel, lateral walls each projecting perpendicularly from one side of the base panel to delimit the profile of an internal space of the box, a plurality of internal partitions (14) which are parallel to each other and perpendicular to the base panel and which extend between the lateral walls in such a way as to divide the internal space into a plurality of compartments intended to receive a heat-insulating lining, and a cover panel, wherein it has at least one stiffening element (16) which is positioned in the internal space transversely with respect to the internal partitions and which has an area of connection (17, 18) to each of the internal partitions to increase the buckling resistance of the internal partitions, the area of connection extending over a depth greater than or equal to half of the distance between the base and cover panels.