An insulated spherical pressure vessel, such as a sphere, having an insulation system installed thereon. The insulation system includes an equatorial support including an equatorial support bar having upper and lower rods attached to upper and lower sides, and a plurality of clips perpendicular to the bar, the clips having one or more holes for additional rods. One or more insulation layers are installed and held against the sphere wall by metal bands. A cable support matrix including metal straps and horizontal cables is installed over the insulation layers, and then insulation panels are secured to the matrix cables using fasteners. The insulation panels each include insulation material and an exterior metal jacket. The panels are secured to horizontally adjacent insulation panels with standing seams. The cables are not secured to the metal straps in any way, but are allowed to freely move through belt loops of the metal straps.

An internal bottom wall of the double hull bears a sump structure comprising a rigid container arranged through the thickness of the bottom wall of the tank and intended to accommodate a suction member of a pump. The rigid container comprises a bottom wall situated at a level further toward the outside than the secondary sealing membrane of the bottom wall of the tank. The sump structure comprises a primary connecting plate surrounding the container, the primary connecting plate having a connecting surface extending parallel to the primary sealing membrane of the bottom wall of the tank, the primary sealing membrane of the bottom wall of the tank being attached in a sealed manner to the connecting surface all around the sump structure.

A cryogenic vessel arrangement 100 for storage of cryogenic liquids, the arrangement comprising a liner member 30 spaced inwardly and apart from an inner wall 24 of the vessel arrangement, the inner wall 24 defining a containment volume 28 of the vessel arrangement internally of the inner wall 24, the liner member 30 located within said containment volume 28 and configured to receive and contain a cryogenic liquid 30A, wherein a thermal capacitance of the liner member 30 is substantially less than that of the inner wall 24.

An internal bottom wall of the double hull bears a sump structure comprising a rigid container arranged through the thickness of the bottom wall of the tank and intended to accommodate a suction member of a pump. The rigid container comprises a bottom wall situated at a level further toward the outside than the secondary sealing membrane of the bottom wall of the tank. The sump structure comprises a primary connecting plate surrounding the container, the primary connecting plate having a connecting surface extending parallel to the primary sealing membrane of the bottom wall of the tank, the primary sealing membrane of the bottom wall of the tank being attached in a sealed manner to the connecting surface all around the sump structure.

A floating structure including a sealed and thermally insulated tank. An upper bearing wall bears a turret-like cargo tank dome intended for the passage of cargo handling equipment. The turret-like cargo tank dome with an internal fluidtight wall forming a sheath engaged through the opening in the upper bearing wall and connected in fluidtight manner to the primary sealing membrane of the upper tank wall all around the sheath. Respective primary and secondary venting devices allow gas to be vented respectively from the primary and secondary spaces of the turret-like cargo tank dome. A gas reservoir containing a tracer gas that is non-condensable or that has a condensation temperature below the low temperature of the liquefied gas contained in the tank is connected via a control valve to one of the venting devices that are the primary venting device and the secondary venting device.

A sealed and insulating tank for storing and/or transporting a liquefied gas has a sealed and self-supporting internal reservoir with an interior surface for contacting the liquefied gas and an outer surface with an insulating barrier covering the outer surface of the internal reservoir. The insulating barrier is fixed to the internal reservoir. An outer sealed membrane covers an outer surface of the insulating barrier, and the outer sealed membrane has a metal sheet provided with bellows or corrugations. The outer sealed membrane is fixed to the insulating barrier or the internal reservoir. An intermediate space between the internal reservoir and the outer sealed membrane contains a gaseous phase under depression in order to press the outer sealed membrane against the outer surface of the insulating barrier.

A multiple-shell tank includes: an inner tank that stores a liquefied gas; an intermediate tank that covers the inner tank and forms a first heat insulating space between the intermediate tank and the inner tank; an outer tank that covers the intermediate tank and forms a second heat insulating space between the outer tank and the intermediate tank; and a communication part enabling an external space that is a space outside the multiple-shell tank and the first heat insulating space to communicate with each other.

The invention relates to a wall (11) for a leaktight and thermally insulating vessel for storing a liquefied gas, said wall (11) comprising, in succession in a thickness direction from the outside to the inside of the vessel, a leaktight outer barrier (13), a thermally insulating barrier (14) and a leaktight inner barrier (15), the thermally insulating barrier (14) having a gas phase at an absolute pressure of less than 1 Pa and comprising:a radiative multilayer insulation cover (47) which extends at right angles to the thickness direction, said radiative multilayer insulation cover (47) comprising a stack of a plurality of sheets which are made of metal or polymer material coated with a metal and which are separated from one another by a textile layer; and-insulating elements (51) which have an open-celled porous structure and are arranged between the radiative multilayer insulation cover (47) and the leaktight outer barrier (13).

A storage unit comprises an internal reservoir and an external reservoir, where the internal reservoir and the external reservoir are separated from each other by an intermediate space. A cryogenic fluid transfer member is housed in the intermediate space, and the cryogenic fluid the transfer member comprises a body delimiting a chamber, an intake placing the chamber in communication with a cryogenic fluid storage volume delimited in the internal reservoir, a discharge, a movable member configured to move relative to the body by varying a volume of the chamber), a motor, and a mechanical transmission transmitting a movement from an output shaft of the motor to the movable member. The movable member is connected to the body by a bellows isolating the motor and the mechanical transmission from cryogenic fluid.

A sealed and insulating tank for storing and/or transporting a liquefied gas has a sealed and self-supporting internal reservoir with an interior surface for contacting the liquefied gas and an outer surface with an insulating barrier covering the outer surface of the internal reservoir. The insulating barrier is fixed to the internal reservoir. An outer sealed membrane covers an outer surface of the insulating barrier, and the outer sealed membrane has a metal sheet provided with bellows or corrugations. The outer sealed membrane is fixed to the insulating barrier or the internal reservoir. An intermediate space between the internal reservoir and the outer sealed membrane contains a gaseous phase under depression in order to press the outer sealed membrane against the outer surface of the insulating barrier.