Detection of internal defects in a liquid natural gas tank by use of infrared thermographyThe 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.
Document ID
19790028494
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Kantsios, A. G. (NASA Langley Research Center Hampton, Va., United States)