Latest revision as of 12:26, 25 January 2021

Abstract

The problem of corrosion of steel surfaces under thermal insulation is one that plagues the petroleum, petrochemical, chemical and pipeline industries [1,2]. Often internal surfaces, as well, are subject to attack by moisture, acids or other corrosive influences. Thermal insulation renders traditional NDE methods mostly ineffective but is essentially transparent to x-rays in the energy ranges commonly used for industrial radiography. Since transmission radiography is severely hampered by the need for access to “both sides” of the object being tested, the use of NDE methods employing Compton backscattered x-rays is strongly suggested [3,4]. Through appropriate collimation of incident and backscattered x- rays, depth as well as transverse information concerning the object under examination can be resolved. Access is required only to one side of the object, making the method potentially useful for examination of large vessels as well as pipelines.

Original document

The different versions of the original document can be found in:

• https://lib.dr.iastate.edu/cgi/viewcontent.cgi?article=1827&context=qnde

• http://lib.dr.iastate.edu/cgi/viewcontent.cgi?article=1827&context=qnde,

https://lib.dr.iastate.edu/qnde/1993/allcontent/253,

https://link.springer.com/chapter/10.1007%2F978-1-4615-2848-7_254,

https://core.ac.uk/display/38893672,

https://academic.microsoft.com/#/detail/15366294

• http://www.springerlink.com/index/pdf/10.1007/978-1-4615-2848-7_254,

http://dx.doi.org/10.1007/978-1-4615-2848-7_254