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.

公开(公告)号：US20170138536A1

公开(公告)日：2017-05-18

申请号：US15302002

申请日：2015-04-03

Applicant: GAZTRANSPORT ET TECHNIGAZ

Inventor： Mael BLEOMELEN ,  Pierre JOLIVET ,  Matthieu PETITPAS ,  Julien GLORY ,  Jean-Paul GONCALVES ,  Julien OLLIVIER

IPC: F17C3/02 ,  F17C5/02 ,  B63B25/16 ,  F17C7/02 ,  F17C13/00 ,  F17C13/02

CPC classification number: F17C3/025 ,  B63B25/16 ,  F17C5/02 ,  F17C7/02 ,  F17C13/004 ,  F17C13/025 ,  F17C13/126 ,  F17C2201/0157 ,  F17C2201/052 ,  F17C2203/0345 ,  F17C2203/0379 ,  F17C2203/0631 ,  F17C2205/0332 ,  F17C2205/0352 ,  F17C2209/234 ,  F17C2221/033 ,  F17C2223/0161 ,  F17C2223/033 ,  F17C2227/0341 ,  F17C2250/043 ,  F17C2250/0452 ,  F17C2250/0473 ,  F17C2250/0491 ,  F17C2250/0626 ,  F17C2250/0647 ,  F17C2260/038 ,  F17C2270/0105 ,  F17C2270/0107

Abstract: A floating structure including a sealed and thermally insulated tank. An upper bearing wall bears a turret-like cargo tank dome intended for the passage of cargo handling equipment. The turret-like cargo tank dome with an internal fluidtight wall forming a sheath engaged through the opening in the upper bearing wall and connected in fluidtight manner to the primary sealing membrane of the upper tank wall all around the sheath. Respective primary and secondary venting devices allow gas to be vented respectively from the primary and secondary spaces of the turret-like cargo tank dome. A gas reservoir containing a tracer gas that is non-condensable or that has a condensation temperature below the low temperature of the liquefied gas contained in the tank is connected via a control valve to one of the venting devices that are the primary venting device and the secondary venting device.