公开(公告)号：US20220034453A1

公开(公告)日：2022-02-03

申请号：US17311828

申请日：2019-12-19

Applicant: GAZTRANSPORT ET TECHNIGAZ

Inventor： Maxime CHAMPAGNAC ,  Pierre JOLIV ,  Mathieu PETITPAS ,  Mael BLEOMEL ,  Damlen BRENAC ,  Laurent SPITTAEL ,  Vincent BRIATTE ,  Julien GLORY

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

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.

公开(公告)号：US20230393012A1

公开(公告)日：2023-12-07

申请号：US18029418

申请日：2021-10-11

Applicant: GAZTRANSPORT ET TECHNIGAZ

Inventor： Maxime CHAMPAGNAC ,  Pierre JOLIVET ,  Mael BLEOMELEN

IPC: G01M3/00 ,  F17C13/00

CPC classification number: G01M3/002 ,  F17C13/004 ,  F17C2201/0157 ,  F17C2203/0358 ,  F17C2223/0153 ,  F17C2250/0439

Abstract: A method is described for checking the sealing of a sealed and thermally insulating tank for storing a liquefied gas at low temperature. The tank has a primary space and a secondary space where, in order to perform the check, a difference in pressure is created between the two spaces at least some of the inert gas injected into the primary space is recovered via at least one secondary outlet of the secondary space so as to be reinjected into the primary space.