A sealed and thermally insulating tank whose wall is fixed to a carrier wall. The tank wall includes a secondary thermal insulation barrier which is retained on the carrier wall and a secondary sealing barrier which is supported by the thermal insulation barrier. There is also a primary insulation barrier which is fixed to the secondary element of the tank by a fastener which is connected to the secondary insulation barrier.

Disclosed is a corner structure (100) of a liquefied gas storage tank, wherein the corner structure is installed at a corner of a storage tank for loading liquefied gas and supports sealing walls (51, 52) that prevent leakage of the liquefied gas. The corner structure (100) may include: two insulation members (110) arranged on the inner surface of a hull structure so as to be oriented in different directions; and mobile members (130) which are installed on the respective insulation members (110) and to which the sealing walls (51, 52) are joined. The mobile members (130) may be slidably coupled to the insulation members 110, and a plurality of the mobile members (130) may be arranged spaced apart from each other in a straight line on one of the insulation members.

Sealed and thermally insulating tank comprising a sealed membrane and a thermally insulating barrier with insulating blocks comprising cover panels, the sealed membrane being made up of a corrugated metal membrane comprising a series of parallel corrugations and flat portions between the corrugations and resting on the cover panels, wherein an insulating block is twice the pitch of the corrugations, meaning that a series of corrugations comprises a pair of corrugations situated in line with one insulating block, and wherein the flat portions of the sealed membrane are arranged in line with an internal zone of the cover panels, the sealed membrane being fixed to the thermally insulating barrier by fixing the flat portions of the sealed membrane to the insulating blocks in the internal zone of the cover panels.

Sealed and thermally insulating tank incorporated into a polyhedral bearing structure, a first bearing wall and a second bearing wall forming an edge corner, the tank having a first tank wall, a thermally insulating barrier and a sealed membrane, the tank further has an angle bracket with a first flange and a second flange in such a way that the angle bracket connects in a sealed manner. The sealed membrane of the first tank wall and the sealed membrane of the second tank wall in line with the edge corner, in which the angle bracket has a pair of first tabs and a pair of second tabs, the tank has a pair of first anchor rods coupled to a respective first tab and a pair of second anchor rods coupled to a respective second tab in such a way as to transmit a tensile load between the angle bracket.

A sealed and thermally insulating tank for storing fluid has a wall including a supporting structure, a primary thermal insulation barrier and a primary sealing membrane lying against the primary thermal insulation barrier, contacting the stored fluid. The primary thermal insulation barrier includes a primary insulating panel which includes a bearing zone collaborating with an anchoring device bearing against the bearing zone of the external rigid plate holding it toward the supporting structure. The primary thermal insulation barrier includes a reinforcing insulating plug extending, in the thickness direction, from the bearing zone of the external rigid plate to a specific zone of the primary sealing membrane to take up the compressive forces on the specific zone of the primary sealing membrane. The reinforcing insulating plug includes a polymer foam layer having a compressive yield strength greater than that of the polymer foam layer of the primary insulating panel.

A corner structure comprises: a fixed member fixed to a corner of a storage tank; a movable member supported on the fixed member so as to be linearly movable; a stop member attached to the fixed member to prevent the movable member from being detached from the fixed member; and a heat insulating member disposed between a sealing wall and a hull. The fixed member comprises a guide portion provided with a guide recessed portion, the movable member comprises a guide protruding portion inserted into the guide recessed portion, and the width and the length of the guide protruding portion are smaller than the width and the length of the guide recessed portion, so that the movable member can be supported on the fixed member to be movable in the longitudinal direction and in the direction perpendicular to the longitudinal direction.

The present invention relates to an insulation structure, for a liquefied gas cargo hold, having an anchor strip removed, a cargo hold comprising the insulation structure, and a liquefied gas carrier comprising the cargo hold. A thermal protection member is substituted for an existing anchor strip, thereby effectively preventing damage on an upper insulating panel, due to a hot gas and heat transfer during welding of a membrane, by means of the thermal protection member as well as enhancing the fixing force of the membrane. The weight of a cargo hold can be reduced by means of forming the thermal protection member from a material in which aluminum foil is covered with glass cloth. And by means of removing an existing SUS anchor strip, rivet processing is not required and thus constructability can be enhanced.

A sealed and thermally insulating tank incorporated in a supporting structure (2), the tank including at least one inclined tank wall (1) forming an angle with a horizontal direction and fixed to a supporting wall of the supporting structure (2) is disclosed. The tank wall (1) has a multilayer structure including successively, in the direction of thickness from the outside to the inside of the tank, a thermally insulating barrier (3) held against the corresponding supporting wall and a sealed membrane (4) carried by the thermally insulating barrier (3). The tank includes sealed strips (15) in the space formed between the thermally insulating barrier (3) and the supporting wall.

The invention relates to a tracing method (2000) for constructing a liquefied gas storage facility (1). The facility (1) comprises a sealed and thermally-insulating tank (20). A bottom wall (21) of the tank (20) includes a plurality of angular sectors (25) which are images of each other through rotation by a predetermined angle about a vertical axis, the predetermined angle being equal to k.360?/N, where k is a positive integer. A vertical wall (22) of the tank (20) comprises a vertical row (120) of planar insulating wall modules (131, 131A) disposed on each vertical load-bearing section (14) of a load-bearing structure of the tank. The tracing method ensures that an azimuthal angular deviation with respect to said vertical axis between two rows (120) of planar insulating wall modules (131, 131A, 171) disposed on two adjacent vertical load-bearing sections (14) is equal to 360?/N, preferably with an accuracy better than 5 mm.

The liquefied gas storage tank includes a primary barrier, a primary insulation wall, a secondary barrier, and a secondary insulation wall. In a state where unit elements are arranged adjacent to each other, each of the unit elements being formed by stacking the secondary insulation wall, the secondary barrier, and a fixed insulation wall which is a part of the primary insulation wall, the primary insulation wall may comprise: a connection insulation wall provided in the space between the adjacent fixed insulation walls; first slits formed between the fixed insulation walls and the connection insulation wall when the connection insulation wall is inserted and installed between the adjacent fixed insulation walls; a plurality of second slits formed in a lengthwise direction and a widthwise direction of the fixed insulation walls; and a first insulating filler material for filling the first slits.