NDE of low-level radioactive waste barrels by x-ray backscatter imaging
- Geo-Centers, Inc., Fort Washington, MD (United States)
- Naval Research Lab., Washington, DC (United States). Materials Chemistry Branch
Of the several processes which occur when x-rays interact with matter, Compton scattering is dominant in the range of energies commonly used in industrial radiography. The Compton interaction between an x-ray photon and a free or outer shell electron causes the electron to recoil and the photon to be propagated in a new direction with a reduced energy. Regardless of the incident beam energy, some photons are always scattered in the backwards direction. The potential for determining material properties by the detection of x-ray backscatter has been recognized for years. Although work in this area has been eclipsed by the rapid development of computerized tomography (CT), a variety of industrial backscatter imaging techniques and applications have been demonstrated. Backscatter inspection is unique among x-ray methods in its applicability with access to only one side of an object. The authors are currently developing the application of x-ray backscatter tomography (XBT) for the inspection of steel-reinforced rubber sonar domes on US Navy vessels. In keeping with their sponsors` interest in technology transfer, the authors are making their XBT facility available for investigations of other applications, subject to scheduling and cost limitations. In this report, they discuss the procedures and results in a preliminary test to determine the applicability of XBT for the detection of corrosion on the inner surface of steel low-level waste barrels and the determination of the remaining wall thickness.
- OSTI ID:
- 207996
- Report Number(s):
- CONF-9510265-; ISBN 1-57117-013-8; TRN: IM9616%%324
- Resource Relation:
- Conference: 1995 American Society for Nondestructive Testing (ASNT) fall conference and quality testing show, Dallas, TX (United States), 16-20 Oct 1995; Other Information: PBD: 1995; Related Information: Is Part Of ASNT 1995 fall conference and quality testing show: NDT -- The lone star of quality; PB: 204 p.
- Country of Publication:
- United States
- Language:
- English
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