GAZTRANSPORT ET TECHNIGAZ

A Sealed and thermally insulated tank has a tank wall on a carrier structure. The tank wall has an insulating barrier, sealed barrier and an anchoring member. The sealed barrier has a first undulating metal membrane and a second undulating metal membrane which are located at one side and the other of the anchoring member, along an assembly edge which is oriented parallel with a longitudinal direction of the anchoring member. The first and the second membrane undulate with a first series of undulations which intersect with the assembly edge Terminal undulation portions which are associated with the first series of undulations of the first membrane extend in a direction transverse to the assembly edge in the direction of the second membrane, beyond the terminal undulation portions which are associated with the first series of undulations of the second membrane.

A method for managing the filling levels of a plurality of tanks arranged in a ship, said tanks being connected in such a way as to allow liquid to be transferred between said tanks, the method comprising providing an initial state ( 7 ) of the tanks, determining a target state ( 8 ) defining respective final filling levels of said tanks, determining a liquid transfer scenario ( 9 ), the transfer scenario defining one or more flows of liquid to be transferred between the tanks during a transfer period in order to shift from the initial state to the target state of the tanks, calculating a probability of damage to the tanks ( 10 ) during the course of said transfer scenario, as a function of successive filling levels of the tanks during the transfer period, if the probability of damage to the tanks satisfies an acceptance criterion, transferring ( 13 ) the liquid between the tanks in accordance with said transfer scenario.

The invention relates to a gas treatment method and system of a gas storage facility ( 2 ), in particular on board a ship, the method comprising the following stages: an extraction of a first gas ( 4 a, 4 b, 5 a, 5 b ,) in the liquid state from a first tank ( 4 ) or first vessel ( 5; 500 ), a first subcooling of the first gas in the liquid state, and storage of the subcooled first gas in the liquid state in the lower part of the first tank ( 4 ) or of the first vessel ( 5; 500 ) or of a second tank or of a second vessel, so as to constitute a reserve layer of cold ( 4 c, 5 c, 500 c ) of the subcooled first gas in the liquid state at the bottom of the first or second tank ( 4 ) or of the first or second vessel ( 5; 500 ).

A tank includes a secondary insulation barrier, a secondary sealing membrane resting on the secondary insulation barrier, a primary insulation barrier resting on the secondary sealing membrane, a primary sealing membrane resting on the primary insulation barrier, and a primary reinforcing member. The primary sealing membrane includes primary corrugations and the secondary sealing membrane includes secondary corrugations projecting toward the interior of the tank. The primary and secondary corrugations are superimposed along a thickness direction. The primary insulation barrier has passages, and the secondary corrugations are accommodated in the passages. A dimension of the primary insulation barrier is less than a dimension of the secondary corrugations along the thickness direction, so the secondary corrugations extend through the passages and are partially accommodated in the primary corrugations. The primary reinforcing member is interposed along the thickness direction between superimposed primary and secondary corrugations so as to reinforce the primary corrugation.

Sealed and thermally insulating tank for storing a fluid, a tank wall having a secondary thermal insulation barrier, a secondary sealing membrane, a primary thermal insulation barrier and a primary sealing membrane supported by the primary thermal insulation barrier, where the primary insulating elements have parallelepiped insulating panels disposed so as to provide voids between them. The primary thermal insulation barrier having an anti-convective filler plate disposed in the void between a first parallelepiped insulating panel and a second parallelepiped insulating panel, the anti-convective filler plate being made of thin continuous material and having a plurality of elongated wall elements extending over substantially the entire width of the void to delimit cells extending substantially perpendicular to the thickness direction.

The invention concerns a forming device intended to form a bend in a corrugation, the forming device comprising: a bottom frame ( 4 ) having a planar mounting surface ( 6 ) intended to receive a sheet metal plate having a corrugation projecting relative to a planar portion of the sheet metal plate, a projecting counter-form ( 5 ) arranged on the mounting surface and intended to be accommodated in the corrugation, the projecting counter-form having a stationary portion ( 7 ) and a movable portion ( 8 ) that is hinged, relative to the stationary portion, about an axis perpendicular to the mounting surface, a top frame ( 34 ) arranged above the bottom frame, a press configured to lower the top frame towards the bottom frame, and a hollow upper die carried by the top frame between the top frame ( 34 ) and the bottom frame ( 4 ), the hollow upper die ( 36, 37 ) being arranged above the movable portion of the projecting counter-form.

Corrugated fluid-tight membrane fluid-tight wall ( 1 ) including two series of parallel corrugations forming a plurality of nodes ( 5 ) at the crossings of said series of corrugations, wave reinforcements ( 11 ) being arranged under the corrugations ( 3 ) of the first series of corrugations ( 3 ), two successive wave reinforcements ( 11 ) in a corrugation ( 3 ) each including a hollow sole ( 15 ) and a reinforcement portion ( 16 ) disposed above the sole ( 15 ), the two wave reinforcements ( 11 ) being developed in the corrugation ( 3 ) on either side of a node ( 5 ), a connecting member ( 13 ) at the level of the node ( 5 ) being nested in the soles ( 15 ) of said two wave reinforcements ( 11 ) in such a manner as to assemble the two wave reinforcements ( 11 ) in an aligned position.