公开(公告)号：US12117129B2

公开(公告)日：2024-10-15

申请号：US17311828

申请日：2019-12-19

Applicant: GAZTRANSPORT ET TECHNIGAZ

Inventor： Maxime Champagnac ,  Pierre Jolivet ,  Mathieu Petitpas ,  Mael Bleomelen ,  Damien Brenac ,  Laurent Spittael ,  Vincent Briatte ,  Julien Glory

IPC: G01M3/00 ,  F17C3/02 ,  F17C13/02 ,  G01M3/22

CPC classification number: F17C3/027 ,  F17C13/026 ,  G01M3/002 ,  G01M3/226 ,  F17C2201/0157 ,  F17C2203/0379 ,  F17C2203/0631 ,  F17C2205/0352 ,  F17C2221/033 ,  F17C2227/0114 ,  F17C2250/038 ,  F17C2250/0439 ,  F17C2250/0443 ,  F17C2250/0491 ,  F17C2260/038 ,  F17C2270/0107

Abstract: A method for checking the sealing of a sealed tank for storing a liquefied gas at low temperature, the tank having an inner hull and a secondary sealing membrane, a secondary space that is arranged between the inner hull and the secondary sealing membrane, a primary sealing membrane and a primary space that is arranged between the primary sealing membrane and the secondary sealing membrane is disclosed. The method has the following main steps: generating a pressure lower than the pressure of the primary space in the secondary space using a suction device, measuring the temperature of an outer surface of the inner hull, and detecting the location of a sealing defect of the secondary sealing membrane in the form of a cold spot on the outer surface of the inner hull.