MONITORING OF A SEALED AND THERMALLY INSULATED VAT

The invention relates to a method for monitoring a sealed and thermally insulated vat (1) intended to hold a fuel gas that is liquefied at low temperature, in which a wall of the vat comprises a thermally insulated barrier (3) arranged between the sealing membrane and the bearing wall, the thermally...

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Bibliographische Detailangaben
Hauptverfasser:	BIEDERMANN, Eric, BEAUVAIS, David, DELETRE, Bruno, PRUNIER, Raphaël, SPITTAEL, Laurent, HAQUIN, Nicolas, DIOUF, Abdoulaye, LOMBARD, Fabrice
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED,LIQUEFIED, OR SOLIDIFIED GASES FIXED-CAPACITY GAS-HOLDERS HEATING INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES LIGHTING MEASURING MECHANICAL ENGINEERING PHYSICS STORING OF DISTRIBUTING GASES OR LIQUIDS TESTING TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED ORSOLIDIFIED GASES WEAPONS
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Beschreibung
Zusammenfassung:	The invention relates to a method for monitoring a sealed and thermally insulated vat (1) intended to hold a fuel gas that is liquefied at low temperature, in which a wall of the vat comprises a thermally insulated barrier (3) arranged between the sealing membrane and the bearing wall, the thermally insulated barrier comprising solid insulation materials and a gas phase maintained at a negative relative pressure, the method comprising: obtaining a diluted gas sample by collecting a sample of the gaseous phase at the negative relative pressure in the thermally insulated barrier through a collection tube (11) and by the addition of a controlled quantity of an inert gas to the gaseous phase to be collected or that has been collected, raising the pressure of the diluted gas sample to an operating pressure of a gas analyzer (25), and measuring a concentration of the fuel gas in the diluted gas sample with the gas analyzer.