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.

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.

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.

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.

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.

Sealed and thermally insulating tank incorporated into a polyhedral bearing structure, the tank having a plurality of tank walls, a thermally insulating barrier and a sealed membrane, a first bearing wall and second bearing wall forming an edge corner, the thermally insulating barrier of a first tank wall having a row of edging blocks, a row of anchor strips anchored to the second bearing wall by a row of anchor rods, a first and second of edging blocks each having a groove formed in thickness of said edging block, a first and a second of said anchor rods being housed respectively in the groove of the first and second edging blocks, one anchor strip in the row of anchor strips is supported overlapping the first edging block and the second edging block, the anchor strip being coupled to the first anchor rod and to the second anchor rod.

Sealed and thermally insulating tank incorporated into a polyhedral bearing structure, the tank having a plurality of tank walls, a thermally insulating barrier and a sealed membrane, a first bearing wall and second bearing wall forming an edge corner, the thermally insulating barrier of a first tank wall having a row of edging blocks, a row of anchor strips anchored to the second bearing wall by a row of anchor rods, a first and second of edging blocks each having a groove formed in thickness of said edging block, a first and a second of said anchor rods being housed respectively in the groove of the first and second edging blocks, one anchor strip in the row of anchor strips is supported overlapping the first edging block and the second edging block, the anchor strip being coupled to the first anchor rod and to the second anchor rod.

A fuel tank arrangement of a marine vessel is disclosed, having an LNG-fuel tank formed of an inner shell, an outer shell, an insulation therebetween and a tank connection space provided at an end of the LNG-fuel tank, the inner shell having an end part at an end of the inner shell facing the tank connection space. A collar is fastened to the end part of the inner shell and extends conically outwardly from the inner shell. The collar has an outer rim to which an additional shell extending in an axial direction away from the inner shell is fastened, and the additional shell has an end rim opposite the collar to which an end cover of the tank connection space is fastened.

A fuel tank arrangement of a marine vessel is disclosed, having an LNG-fuel tank formed of an inner shell, an outer shell, an insulation therebetween and a tank connection space provided at an end of the LNG-fuel tank, the inner shell having an end part at an end of the inner shell facing the tank connection space. A collar is fastened to the end part of the inner shell and extends conically outwardly from the inner shell. The collar has an outer rim to which an additional shell extending in an axial direction away from the inner shell is fastened, and the additional shell has an end rim opposite the collar to which an end cover of the tank connection space is fastened.