A sealed and thermally insulating tank having a sealing membrane, a thermal insulation barrier, and a reinforcing piece for reinforcing the sealing membrane against the pressure of the fluid contained in the tank. The thermal insulation barrier has a groove parallel to the longitudinal direction of the corrugation, and the reinforcing piece has a retaining rib engaged in the groove, the retaining rib forming a lug extending in the groove beyond a longitudinal end of the main body in the longitudinal direction of the corrugation. A stop element attached to the thermal insulation barrier stops the reinforcing piece in the longitudinal direction of the corrugation in a first direction and cooperates with the lug to stop the reinforcing piece in a direction moving away from the support surface.

A barrier sheet for an LNG cargo tank includes a first barrier sheet so as to form a secondary barrier of the cargo tank and a second barrier sheet attached on the first barrier sheet. Each of the first and second sheets includes first and second metal layers and a glass cloth layer interposed between the first and second layers and bonded to the first and second metal layers.

A barrier sheet for an LNG cargo tank includes a first barrier sheet so as to form a secondary barrier of the cargo tank and a second barrier sheet attached on the first barrier sheet. Each of the first and second sheets includes first and second metal layers and a glass cloth layer interposed between the first and second layers and bonded to the first and second metal layers.

The present invention relates to an automatic welding system for a corrugated membrane sheet of a membrane type liquefied-gas cargo hold, a structure for guiding and fixing an automatic welding apparatus for a corrugated membrane sheet of a membrane type liquefied-gas cargo hold, and a structure for guiding an automatic welding apparatus for a corrugated membrane sheet of a membrane type liquefied-gas cargo hold. When a corrugated membrane sheet is welded, a cross-anchor strip having a fixing groove is installed on a portion where longitudinal and lateral anchor strips, which are attached to the upper surface of a heat insulating panel on which the corrugated membrane sheet is mounted, cross each other, which makes it possible to install a welding guide that supports the automatic welding apparatus and guides movement of the automatic welding apparatus using the fixing groove, thereby stably performing automatic welding on the corrugated membrane sheet.

A fixing device of a first barrier-reinforcing member for supporting first and second corrugated portions that are formed in a first barrier to cross each other in a liquefied natural gas (LNG) storage tank including a heat-insulating board and a first barrier positioned thereon and forming an inner wall, includes: a fixing bracket including a coupling portion fixedly inserted in insertion grooves formed under lateral sides of a crossing portion where the first and second corrugated portions cross, and a body coupled to one side of the coupling portion; and a first fastening member for fastening an impact-absorbing plate between the heat-insulating board and the first barrier with the other side of the body. The reinforcing member is fixed to inner sides of the first and second corrugated portions by the impact-absorbing plate.

A fixing device of a first barrier-reinforcing member for supporting first and second corrugated portions that are formed in a first barrier to cross each other in a liquefied natural gas (LNG) storage tank including a heat-insulating board and a first barrier positioned thereon and forming an inner wall, includes: a fixing bracket including a coupling portion fixedly inserted in insertion grooves formed under lateral sides of a crossing portion where the first and second corrugated portions cross, and a body coupled to one side of the coupling portion; and a first fastening member for fastening an impact-absorbing plate between the heat-insulating board and the first barrier with the other side of the body. The reinforcing member is fixed to inner sides of the first and second corrugated portions by the impact-absorbing plate.

Disclosed are multilayered aerogel nanocomposite materials, and methods of making and using them.

A plastic composite component which is formed by a thin hard plastic outer layer, at least one elastomer layer adjoining the former on the inside, and at least one metal and/or plastic carrier layer adjoining said elastomer layer on the inside and made of a fibre reinforced plastic (RFP). A carbon fibre reinforced plastic (CRP) or glass fibre reinforced plastic (GRP), is arranged on the component or at least partly forms the latter, as an impact protection part, as a splinter protection part, as a protective part against sudden total failure or as a protective part against vibrations and vibration damages, against resonance, for the purpose of damping oscillations or for the purpose of acoustic damping.

A sealed and thermally insulating tank having a sealing membrane, a thermal insulation barrier, and a reinforcing piece for reinforcing the sealing membrane against the pressure of the fluid contained in the tank. The thermal insulation barrier has a groove parallel to the longitudinal direction of the corrugation, and the reinforcing piece has a retaining rib engaged in the groove, the retaining rib forming a lug extending in the groove beyond a longitudinal end of the main body in the longitudinal direction of the corrugation. A stop element attached to the thermal insulation barrier stops the reinforcing piece in the longitudinal direction of the corrugation in a first direction and cooperates with the lug to stop the reinforcing piece in a direction moving away from the support surface.

A sealed and thermally insulating tank having a sealing membrane, a thermal insulation barrier, and a reinforcing piece for reinforcing the sealing membrane against the pressure of the fluid contained in the tank. The thermal insulation barrier has a groove parallel to the longitudinal direction of the corrugation, and the reinforcing piece has a retaining rib engaged in the groove, the retaining rib forming a lug extending in the groove beyond a longitudinal end of the main body in the longitudinal direction of the corrugation. A stop element attached to the thermal insulation barrier stops the reinforcing piece in the longitudinal direction of the corrugation in a first direction and cooperates with the lug to stop the reinforcing piece in a direction moving away from the support surface.