An insulation arrangement for an ocean-going ship comprising a modular arrangement of panels, each panel comprising a first cold layer and an opposing ambient layer and a volume therebetween arranged in use to be evacuated to create a vacuum.

In a membrane type heat insulation system for a cryogenic liquefied gas carrier cargo tank and a liquefied gas fuel container, a secondary heat insulation layer comprises a plurality of panels which are stacked in multiple layers while each pair of upper and lower panels is arranged to intersect each other, whereby heat loss which may occur in the gap between the panels can be minimized and deformation due to a temperature difference can be minimized.

The invention concerns a sealed tank including adjacent first and second walls each comprising a corrugated sealing membrane; the sealing membranes of the first and second walls join at the level of an edge;

the sealing membrane of the first wall including a first series of corrugations and a second series of corrugations intersecting at the edge;
the sealing membrane of the second wall including a third series of corrugations intersecting at the edge;
the tank further including a corner arrangement comprising a sealing membrane that is welded in sealed manner to the sealing membrane of the first wall and to the sealing membrane of the second wall and is such that the corrugations of the first series of corrugations are connected to corrugations of the third series of corrugations and the corrugations of the second series of corrugations are connected to the corrugations of the third series of corrugations.

A heat insulation structure for corner parts of a liquefied natural gas (LNG) storage tank includes a secondary insulation wall arranged on an inner wall of a hull, a secondary sealing wall disposed on the secondary insulation wall, a primary insulation wall arranged on the secondary sealing wall, and a primary sealing wall disposed on the primary insulation wall. The heat insulation structure includes a corner assembly finishing an edge of the primary sealing wall at a corner part of the storage tank to complete sealing of the storage tank. The corner assembly includes an endcap sheet finishing each of four corners of the primary sealing wall provided to each surface of the storage tank to seal the four corners. The endcap sheet includes an endcap corrugation and an elongated corrugation extending in a direction perpendicular to a direction in which the endcap corrugation extends.

An insulating wall fixing device for liquefied natural gas storage tanks includes: a base socket; and a securing stud inserted into the base socket. The base socket is formed on an upper surface thereof with an insertion hole through which the securing stud is inserted into the base socket and has an interior space in which one end of the securing stud is settled. The securing stud includes an insertion portion inserted into the interior space of the base socket through the insertion hole and a fastening portion protruding from the insertion portion outwardly of the base socket. The insertion portion includes a spherical shape and multiple leg members divided by a groove formed from one end of the insertion portion to the other end of the insertion portion. The multiple leg members of the insertion portion are retracted toward the groove.

An insulation box of an insulating barrier in a liquefied gas carrier includes a box structure that includes a bottom panel, a top panel, external pillars, and optionally at least one internal partition that define at least one void. The at least one void includes at least one multilayer insulation board. Each of the at least one multilayer insulation board includes at least one facer layer, at least one first polyurethane layer having a first density from 100 kg/m.sup.3 to 2000 kg/m.sup.3 according to ASTM D 1622, and at least one second polyurethane layer having a second density of less than 100 kg/m.sup.3 according to ASTM D 1622.

A Liquid Natural Storage (LNG) tank comprising an outer mechanical support structure (20) providing a closed space housing a membrane wall of the cryogenic tank is disclosed. Spacer elements (21) is supporting a membrane wall constituted by a mixture of steel plates, steel rods, wooden beams and plywood plates.

In a membrane type heat insulation system for a cryogenic liquefied gas carrier cargo tank and a liquefied gas fuel container, a secondary heat insulation layer comprises a plurality of panels which are stacked in multiple layers while each pair of upper and lower panels is arranged to intersect each other, whereby heat loss which may occur in the gap between the panels can be minimized and deformation due to a temperature difference can be minimized.

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 Liquid Natural Storage (LNG) tank comprising an outer mechanical support structure (20) providing a closed space housing a membrane wall of the cryogenic tank is disclosed. Spacer elements (21) is supporting a membrane wall constituted by a mixture of steel plates, steel rods, wooden beams and plywood plates.