Method of installing a membrane containment system for a liquid cargo tank

Abstract

This application relates to the field of liquefied natural gas (LNG) storage and transportation, specifically to a method for installing a membrane enclosure system for a LNG cargo tank. The method includes: determining sampling points at the corners of each tank wall and obtaining first spatial coordinates for these sampling points; determining a first fitting plane corresponding to the sampling points for each tank wall based on the first spatial coordinates; for each tank wall, where at least one sampling point is not coplanar with the first fitting plane and is located on the side of the first fitting plane facing inwards from the tank wall, translating the first fitting plane inwards from the tank wall to obtain a second fitting plane; applying an adhesive material to the tank wall corresponding to the second fitting plane to form an installation plane coinciding with the second fitting plane on the side of the adhesive material facing inwards from the tank wall; and laying the membrane enclosure system along the installation plane on the adhesive material. The installation method provided by this application can improve the installation quality of the membrane enclosure system.

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