Abstract: The invention concerns a guide device (10) for a pipe intended to be moved along a first axis (X), comprising: a support (51) comprising a receiving plate comprising a front face extending in a first plane (P1) substantially parallel to the first axis (X); a non-stick coating film (12) fixed to the front face of the receiving plate intended to form a first line contact (13) with the pipe; a support collar (14) having a U-shaped section having a so-called internal face (15) intended to surround the pipe, the support collar (14) being extended in a second plane (P2) substantially parallel to the first plane (P1) by two end sections (16, 17) extending on respective opposite sides of the U-shaped section; a fixing means (18) for fixing each end section (16, 17) to the support (51); a circular non-stick coating pad (19) fixed to the so-called internal face (15) intended to form at least one second line contact (23) with the pipe.

Abstract: Method for assembling and installing a liquefied gas storage tank. The invention relates to a liquefied gas storage installation comprising a load-bearing structure and a sealed and thermally insulating tank (71) arranged in the load-bearing structure, in which the so-called adjacent membranes (13, 13?) of the sealing membrane of the cofferdam wall of the main structure of the tank (71) protrude at least partially into the liquid dome (2), said so-called contiguous membranes being directly sealably fastened to the so-called adjacent membranes of the liquid dome (2).