Abstract: The invention relates to a method for detection of a leak from a tank for liquid gas, said tank comprising a membrane surrounding the liquid gas, the membrane being surrounded by an insulation space which separates the membrane from a wall, the insulation space being filled an inert gas which is injected and extracted by at least one duct. The detection method comprises the following steps: determining 921 a first variation of mass of inert gas ?M1 between two moments by measuring the gas added and removed by the duct; calculating 922 a second variation of mass of inert gas ?M2 corresponding to a difference between two masses of inert gas measured in the insulation space; and comparing 931 the first variation with the second variation, and triggering an alarm if a difference E1 between the first variation and the second variation of mass of inert gas is greater than a first threshold S1.

Abstract: A sealed and thermally insulating tank for storing a low-temperature liquefied gas, having an insulating box-section with a bottom panel coming into abutment on a support wall, by means of sealant beads disposed between the support wall and the bottom panel, the sealant beads being disposed in the form of at least one closed outline delimiting at least one confined space between the support wall and the bottom panel, the bottom panel having at least one through passage leading into the confined space to allow gas to circulate between the confined space and an internal space of the insulating box-section.

Abstract: The invention relates to a method for detection of a leak from a tank for liquid gas, said tank comprising a membrane surrounding the liquid gas, the membrane being surrounded by an insulation space which separates the membrane from a wall, the insulation space being filled an inert gas which is injected and extracted by at least one duct. The detection method comprises the following steps: determining 921 a first variation of mass of inert gas ?M1 between two moments by measuring the gas added and removed by the duct; calculating 922 a second variation of mass of inert gas ?M2 corresponding to a difference between two masses of inert gas measured in the insulation space; and comparing 931 the first variation with the second variation, and triggering an alarm if a difference E1 between the first variation and the second variation of mass of inert gas is greater than a first threshold S1.

Abstract: A sealed and thermally insulating tank for storing a low-temperature liquefied gas, having an insulating box-section with a bottom panel coming into abutment on a support wall, by means of sealant beads disposed between the support wall and the bottom panel, the sealant beads being disposed in the form of at least one closed outline delimiting at least one confined space between the support wall and the bottom panel, the bottom panel having at least one through passage leading into the confined space to allow gas to circulate between the confined space and an internal space of the insulating box-section.

Abstract: A system for transferring liquid natural gas from a ship to a facility, the transfer system comprising: a hoisting device which is designed to be secured on the deck of the ship; a mobile chassis, which is supported by the hoisting device; a first on-board pipe, for transferring liquid natural gas from the ship to the facility, said first on-board pipe being supported by the mobile chassis; and a second on-board pipe for the transport of inert gas, said second on-board pipe being supported by the mobile chassis comprising a first connection element which is associated with the second duct, and being connected to the first on-board pipe between the valve and the second connection element of the first on-board pipe.

Abstract: A securing device for securing a pipe in a housing, which has a cylindrical collar, at least three securing arms, each securing arm containing a proximal arm portion mounted on the cylindrical collar, a distal arm portion bearing a bearing pad, the bearing pad containing a bearing surface facing away from the collar and intended to collaborate with a wall of the housing in which at least one of the securing arms contains a guideway capable of translationally guiding the distal arm portion with respect to the proximal arm portion, an elastic member being coupled to the guideway so as to be able to apply a return force that pushes the distal arm portion away from the proximal arm portion.

Abstract: A securing device for securing a pipe in a housing, which has a cylindrical collar, at least three securing arms, each securing arm containing a proximal arm portion mounted on the cylindrical collar, a distal arm portion bearing a bearing pad, the bearing pad containing a bearing surface facing away from the collar and intended to collaborate with a wall of the housing in which at least one of the securing arms contains a guideway capable of translationally guiding the distal arm portion with respect to the proximal arm portion, an elastic member being coupled to the guideway so as to be able to apply a return force that pushes the distal arm portion away from the proximal arm portion.

Abstract: A system for transfer of a fluid between a ship and a facility having a mast, at least one fluid transfer line which extends along the mast, and at least one duct suspended on the distal end of the mast, which is firstly connected to the fluid transfer line, and secondly equipped with a connection element which is designed to cooperate with a manifold of the facility. The duct has a first, rigid portion and a second, flexible portion, and a rigidification element which is fitted such as to be mobile along the duct between a position for rigidification of the flexible portion and a position of release.

Abstract: A system for transferring liquid natural gas from a ship to a facility, the transfer system comprising: a hoisting device which is designed to be secured on the deck of the ship; a mobile chassis, which is supported by the hoisting device; a first on-board pipe, for transferring liquid natural gas from the ship to the facility, said first on-board pipe being supported by the mobile chassis; and a second on-board pipe for the transport of inert gas, said second on-board pipe being supported by the mobile chassis comprising a first connection element which is associated with the second duct, and being connected to the first on-board pipe between the valve and the second connection element of the first on-board pipe.

Abstract: A system for transfer of a fluid between a ship and a facility having a mast, at least one fluid transfer line which extends along the mast, and at least one duct suspended on the distal end of the mast, which is firstly connected to the fluid transfer line, and secondly equipped with a connection element which is designed to cooperate with a manifold of the facility. The duct has a first, rigid portion and a second, flexible portion, and a rigidification element which is fitted such as to be mobile along the duct between a position for rigidification of the flexible portion and a position of release.