The use of an infrared scanning technique to detect defects in the secondary barrier of a liquid natural gas tank is described. The method works by detecting leak-caused temperature differences as low as 0.2 K, but can provide only an approximate idea of the extent of the defect. The nondestructive method was tested in a study of a LNG tank already at its location in a ship; the secondary barrier was located inside the tank wall. Defective areas indicated by the infrared radiometric measurements were confirmed by other probe techniques and by physical examination.


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    Title :

    Detection of internal defects in a liquid natural gas tank by use of infrared thermography


    Contributors:

    Conference:

    Biennial Infrared Information Exchange ; 1978 ; St. Louis, MO


    Publication date :

    1978-08-01


    Type of media :

    Conference paper


    Type of material :

    No indication


    Language :

    English






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