Abstract: The invention relates to a sealed and thermally insulating tank for storing a fluid, wherein a tank wall comprises, successively in a thickness direction, a secondary thermal insulation barrier (1), a secondary sealing membrane (4), a primary thermal insulation barrier (5) and a primary sealing membrane (7), wherein the secondary sealing membrane (4) is a corrugated metal membrane comprising a series of parallel corrugations (25, 26) forming channels and flat portions located between said corrugations (25, 26), and wherein anti-convection filler elements (16, 20, 22) are disposed in the corrugations (25, 26) of the secondary sealing membrane (4) to generate a head loss in said channels.

Abstract: An apparatus for storing and transporting a cryogenic fluid. The apparatus is carried onboard a ship. The apparatus including a sealed and thermally insulating tank intended for the storage of the cryogenic fluid in a state of liquid-vapor diphasic equilibrium, the apparatus including at least two sealed pipes passing through the tank in such a way as to define a passage for the removal of the vapor phase of the cryogenic fluid from inside to outside the tank, the two sealed pipes each including a collection end opening inside the tank at the level of the sealing membrane of the top wall. The collecting ends of two sealed pipes open to the inside of the tank at the level of two zones of the top wall which are situated at two opposite ends of the top wall.

Abstract: An apparatus for storing and transporting a cryogenic fluid. The apparatus is carried onboard a ship. The apparatus including a sealed and thermally insulating tank intended for the storage of the cryogenic fluid in a state of liquid-vapor diphasic equilibrium, the apparatus including at least two sealed pipes passing through the tank in such a way as to define a passage for the removal of the vapor phase of the cryogenic fluid from inside to outside the tank, the two sealed pipes each including a collection end opening inside the tank at the level of the sealing membrane of the top wall. The collecting ends of two sealed pipes open to the inside of the tank at the level of two zones of the top wall which are situated at two opposite ends of the top wall.

Abstract: A mechanically welded structure comprising a first flat and thin metallic structural element extending in a plane and delimited by a straight edge on one side, and a second metallic structural element welded to the straight edge of the first structural element, or welded to an intermediate element connected to the straight edge and inserted between the first and second structural elements, the second structural element exerting, at least one point of the straight edge, a force resolving into at least one component extending in said plane perpendicularly to the straight edge, wherein the first structural element has a stress-relieving slit extending parallel to the straight edge and situated facing the point at which said force is exerted.

Abstract: The invention relates to a mechanically welded structure that has first flat and thin metallic structural element (10) extending in a plane and delimited by straight edge (15) on one side, and second metallic structural element (20) welded to straight edge (15) of first structural element (10), or to intermediate element (25) connected to this straight edge (15) and inserted between first and second structural elements (10, 20), second structural element (20) exerting, at least one point (151) of straight edge (15), a force that resolves into at least one component extending in said plane perpendicularly to straight edge (15).