The invention provides a system for the detection of leaks in the primary barrier (150), the secondary barrier (130), and the inner hull (110) of the primary and secondary insulation spaces (140 and 120) of a cryogenic cargo tank (10) carrying liquified natural gas in a transport ship (20) wherein an inert gas is maintained at a first predetermined pressure (PNP) in the primary insulation space (140) which is less than the pressure of the cargo gas (PCH2) and wherein the inert gas is maintained at a second predetermined pressure (PNS) in the secondary in...
A system for detecting leaks in the barrier (130) separating the primary (140) and the secondary (120) insulation spaces disposed around a cryogenic storage tank (10), said system comprising: means (200) for storing an inert gas, first means (120) connected to said storing means (200) and to said primary insulation space (140) for supplying and maintaining said inert gas at a first predetermined pressure (PNP) in said primary insulation space (140), means (230) connected to said primary insulation space (140) for exhausting said inert gas from said prima...
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