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.
Detection of internal defects in a liquid natural gas tank by use of infrared thermography
Biennial Infrared Information Exchange ; 1978 ; St. Louis, MO
1978-08-01
Conference paper
No indication
English
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