A connection having at least one double-walled pipe of stainless steel connected to an LNG tank is disclosed, the LNG tank having an inner shell of stainless steel and an outer shell spaced at a distance from the inner shell, the inner and outer shells defining an isolation space therebetween. The at least one double-walled pipe includes a common outer wall and at least one inner pipe. The outer wall of the pipe is connected to the inner shell of the tank in such a way that the outer wall and/or a pipe fitting of cold resistant material between the inner shell and the outer wall is arranged to compensate for changes in the length of the outer wall of the pipe and/or of the pipe fitting due to temperature differences between the outer wall of the pipe and the inner shell of the tank.

An apparatus for fabricating an internally finned pressure vessel includes a plurality of positioning discs, each of the positioning discs defining a plurality of circumferentially spaced slots extending radially into the positioning disc from a perimeter thereof, and one or more rods extending through the plurality of positioning discs, the plurality of positioning discs being held in axial alignment by the one or more rods. A method of fabricating the internally finned pressure vessel includes providing the apparatus, loading a plurality of fins into the slots of the positioning discs, inserting the apparatus containing the plurality of fins into a pressure vessel, attaching the plurality of fins to the pressure vessel by a brazing process, and removing the apparatus from the pressure vessel.

A gas container includes a tubular container main body formed by a plurality of pieces which include a first dome piece and a second dome piece and are disposed separately in an axial direction, the tubular container main body having an internal space configured to store a gas, a first mouthpiece attached to the first dome piece, a second mouthpiece attached to the second dome piece, a storage member configured to store and release a gas, and a tubular accommodation member disposed in the internal space and having an accommodation space accommodating the storage member. A method for assembling a gas container includes a first step of assembling and fixing the accommodation member to the first mouthpiece attached to the first dome piece, and temporarily assembling the accommodation member to the second mouthpiece attached to the second dome piece, and a second step of connecting the pieces to each other.

The present invention is related to a corner panel of an LNG cargo that includes a main body, which constitutes a corner area of the cargo, and a stress diverging part, which reduces the convergence of stress of the main body by being integrated with an internal face of the main body and being formed with curvature. Therefore, by forming the corner area of the LNG cargo in a single body having a round-shaped curvature, convergence of stress caused by the deformation of the hull and thermal deformation can be prevented, and possibility of crack in a secondary barrier can be removed. By allowing the secondary barrier to be formed in a curved shape, the constructability of the secondary barrier can be greatly improved. Since no hardwood key or plywood is required, the thickness of a primary barrier can be reduced as the stress is decreased and the reliability of the secondary barrier is improved, and the weight can be greatly reduced over the conventional cargo corner area.

An opening-side flange may include a connecting surface including an inclined surface, a corner part, and an annular groove on a bottom-face side. A conical surface part of the inclined surface may be a conical surface of a truncated cone, and may be inclined such that a radially outer end thereof approaches an opening side. The corner part may be a corner formed between the inclined surface and the annular groove, and may function as a sealing surface with the liner. The annular groove may be a part that connects the inclined surface to an outer surface part, and may be a part that is hollowed toward the opening side relative to the inclined surface.

The safety device (3) comprises: a ventilation channel (9) intended to establish fluid communication between an internal volume (10) defined by a tank and the outside of the tank (2), a safety piston (5) movable between a closure position in which it closes the ventilation channel (9), and a safety position in which it does not close the ventilation channel, a first safety member (6) which is deformable and that keeps the safety piston in the closure position against an elastic force returning the safety piston to the safety position, means (7) for deforming the first safety member (6), which means are movable between a resting position and a deformation position, and at least a second safety member (8) intended, in a resting position, to hold the deformation means in the resting position against an elastic force returning the deformation means back to the deformation position when the second safety member experiences a temperature lower than a predetermined temperature and, in a working position, to release the elastic force for returning the deformation means in the deformation position when the second safety member experiences a temperature higher than the predetermined temperature,

The second safety member (8) is formed by a safety cable (16) made of a material that has low mechanical resistance to fire.

Provided herein is a high-pressure fluid storage container with oxidation resistance/hydrogen embrittlement resistance through surface treatment.

The invention relates to a connector device for connecting one or more hydrogen storage means to a fuel cell. For this purpose, a connector device is proposed which has a main part made of a light metal, such as aluminum, and connector elements made of a high-strength material, such as high-grade steel.

A method for constructing a triple shell tank including an inner tank, an intermediate tank, and an outer tank each having a roof and a side plate includes the following procedure. As construction entrances, a first construction opening is opened in an outer tank side plate, a second construction opening is opened in an inner tank side plate, and a third construction opening is opened in an intermediate tank side plate, each during the installation of the corresponding side plate. The construction openings are opened so as to partially overlap with one another in a circumferential direction and a height direction of the triple shell tank. The first construction opening and the second construction opening are opened so as to satisfy a relationship AR1AR2, where AR1 is an opening area of the first construction opening and AR2 is an opening area of the second construction opening.

A safety device includes a ventilation channel to establish fluid communication between an Internal volume defined by a tank and the outside of the tank; a first safety member which is deformable and that keeps a safety piston in the closure position against an elastic force returning the safety piston to the safety position, structure for deforming the first safety member, and a second safety member intended, in a resting position, to hold the deformation structure in the resting position against an elastic force returning the deformation structure back to the deformation position when the second safety member experiences a temperature lower than a predetermined temperature and, in a working position, to release the elastic force for returning the deformation structure in the deformation position when the second safety member experiences a temperature higher than the predetermined temperature.