A CRYOGENIC CONTAINER, AND METHOD OF USING THE SAME

摘要

The present invention provides a cryogenic container (10) comprising walls (20) and a base (30), said walls comprising: a first liquid barrier layer (50); a second liquid barrier layer (100); one or more spacer elements (150), disposed between the first and second liquid barrier layers (50, 100), to separate the first and second liquid barrier layers (50, 100), thereby providing an annulus (200); one or more fluid vents (250), in direct fluid communication with the annulus (200) for venting fluid from the annulus (200), wherein at least one of the vents (250) is connected to a pressure differential device (320); sealing means (260) to contain the annulus (200); a pressure measuring device connected to the annulus for monitoring the pressure in the annulus over time; and a comparator for comparing at least two pressure measurements from the pressure measuring device.