Method and apparatus for automated, digital, radiographic inspection of piping
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United States of America Patent
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Feb 2, 2010
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N/A
app pub date -
Sep 15, 2008
filing date -
Sep 15, 2008
priority date (Note) -
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Abstract
A system and method for automatic digital radiographic inspection of piping in which a radiation source and radiation detector are mounted on an inner carriage that rotates concentrically inside an outer carriage and both carriages are placed externally to the piping during operation. A rotating system is provided to cause the inner carriage to rotate completely around the piping. A positioning system is provided for moving the outer carriage longitudinally on the piping. A balancing system is provided such that any tilting of the system during its longitudinal movement on the piping is corrected. In operation, the system is placed on the piping and the rotating system causes the inner carriage to rotate around the piping. After one complete rotation is ensured the positioning system moves the assembly in a longitudinal direction on the piping. A controller controls the rotating; positioning and balancing systems in a coordinated manner to move the outer carriage after the inner carriage has made one complete rotation of the piping. The radiation detector receives the data signals form the radiation source and these signals are used to generate images of the piping for inspection of defects.
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