Facility for storing and transporting a liquefied gas

An installation for storing and transporting a liquefied gas, the installation having:

• a load-bearing structure having a load-bearing wall provided with an opening,
• a sealed and thermally insulating tank incorporated in said load-bearing structure, said sealed and thermally insulating tank having a tank wall mounted on an inner surface of the load-bearing wall, the tank wall having at least one thermally insulating barrier and at least one sealing membrane that are superposed in a thickness direction of the tank wall,
• a sealed metal pipe that is fitted in the opening in the load-bearing wall and passes through the tank wall parallel or obliquely to said thickness direction so as to define a fluid passage between the inside and the outside of the tank,
• a sealed metal sheath that is disposed around the sealed pipe and fitted in the opening in the load-bearing wall, the sealed sheath having a longitudinal portion extending parallel to the sealed pipe through the thickness of the thermally insulating barrier at least as far as the sealing membrane, the sealing membrane having an opening through which the sealed pipe passes and being joined to the sealed sheath in a sealed manner all around said opening,
• wherein the load-bearing structure comprises a coaming that protrudes from an outer surface of the load-bearing wall and is disposed around the sealed pipe, the sealed pipe being supported by a top wall of the coaming, and
• the longitudinal portion of the sealed sheath having an outer end that is disposed outside the load-bearing wall and attached to the top wall of the coaming or to the sealed pipe in a sealed manner, all around the sealed pipe.