Abstract:
The invention concerns a sealed and thermally insulating vessel for storing a fluid, comprising a secondary thermal insulation barrier and a secondary sealing membrane, the secondary sealing membrane comprising a plurality of corrugated metal sheets sealingly welded to each other and each comprising at least two perpendicular corrugations, the secondary thermal insulation barrier comprising a plurality of juxtaposed insulating panels, each insulating panel having an inner face, opposite the bearing wall, provided with metal plates to which the corrugated metal sheets are welded, each insulating panel being associated with the adjacent insulating panels via a plurality of bridging elements.
Abstract:
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.
Abstract:
A tank or tank system for storing a cryogenic liquid exhibiting at least one collecting container with an upper region and a lower region, so as to hold the cryogenic liquid, at least one arrangement for feeding and discharging liquids and at least one arrangement for feeding and discharging gases, wherein the tank further exhibits at least one frame structure comprising a thermal insulation material.
Abstract:
A tower structure with storing capacity for at least one medium is described. The tower structure comprising at least two substantially vertically oriented support structures for forming the tower structure, wherein at least one of the support structures comprises at least one constructive pressure vessel for forming the support structure. A method for building the tower structure also is disclosed. The pressure vessel based tower structure may have applications e.g. in wind mills and solar thermal towers.
Abstract:
A method for constructing a cylindrical tank which has a metallic inner tank and a concrete outer tank includes a step of building up a PC wall in an outer circumferential edge portion of a base plate, a step of assembling an outer tank roof on the base plate other than the outer circumferential edge portion of the base plate, a step of lifting the outer tank roof which is on the base plate using a jack-up unit while the PC wall is being built up and then holding the outer tank roof on the PC wall, and a step of assembling the inner tank independently of the outer tank roof in a space under the outer tank roof which is created due to the lifting.
Abstract:
The invention relates to an insulated chamber comprising at least one element that may operate at sub-ambient temperature, the space around the element(s) being filled with solid insulation and means for injecting a gas containing at least 95 mol-% nitrogen into the insulation, at least some of the gas-injection means opening at a position vertically above at least one element to insulate.
Abstract:
A sealed and thermally insulated tank arranged in a bearing structure (1) to contain a fluid, said tank comprising walls fixed to said bearing structure, a tank wall having a primary sealed barrier, a primary insulating barrier, a secondary sealed barrier and a secondary insulating barrier, the tank comprising a through-element arranged through the tank wall, in which tank the tank wall around the through-element comprises: secondary insulating blocks arranged on the wall of the bearing structure around the through-element and being covered by a first sealed layer forming the secondary sealed barrier, a circular plate arranged parallel to the tank wall at the same level as the first sealed layer forming the secondary sealed barrier, a second sealed layer (723a-d) fixed in a sealed manner straddling the first sealed layer and the circular plate all around the circular plate.
Abstract:
A cryogenic tank includes a heat insulating material layer which is disposed between a concrete wall and a membrane and includes a secondary barrier layer in an inner portion of the heating insulating material, and a membrane anchor mechanism which penetrates the secondary barrier layer, is fixed to the concrete wall, and presses the membrane. The membrane anchor mechanism includes a seal portion which covers a through portion penetrating the secondary barrier layer.
Abstract:
A fluidtight and thermally insulating tank wall comprises:a multi-layer structure comprising a fluidtight barrier (5) and a thermally insulating barrier (4), retaining rods (22) attached to the bearing wall (7) between the insulating elements and extending in the direction of the thickness of the multi-layer structure to hold the multi-layer structure on the bearing wall, in which crossmembers (30) are attached to the retaining rods (22) such that in each instance a crossmember extends between two retaining rods at the interface between two insulating elements, the cover panels (11) of the insulating elements being connected to the crossmembers (30) so as to be held against the bearing wall via the crossmembers, and the fluidtight barrier (5) being connected to the crossmembers (30) so as to be held against the cover panels of the insulating elements via the crossmembers.
Abstract:
Disclosed herein is a semi-submersible offshore structure having storage tanks for liquefied gas, which is constructed so as to improve workability in marine offloading of the liquefied gas stored in the storage tanks while reducing an influence of sloshing. The offshore structure is anchored at sea and has liquefied gas. The offshore structure includes a storage tank storing liquefied gas, a plurality of columns partially submerged under the sea level and each having the storage tank therein, and an upper deck located on the plurality of columns to connect the columns to each other.