Inspectioneering

Tim Cowling: About the Author

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Published Articles

May/June 1998 Inspectioneering Journal
By Richard D. Roberts at Quest Integrity Group, and Tim Cowling

Part 1 included a review of current tube inspection practices in convection and radiant sections of heaters/furnaces in the refining and chemical industries. The authors also presented a new inspection device combining laser image mapping of the internal surface of tubes and ultrasonic thickness mapping.

March/April 1998 Inspectioneering Journal
By Richard D. Roberts at Quest Integrity Group, and Tim Cowling

Furnace tubes in the petrochemical and refining industries lengths' can exceed 2,000 ft., often with multiple serpentine bends. This can make them extremely difficult to inspect using conventional NDE methods. The following inspection tool (FTIS) employs the combined capabilities of high-speed laser and advanced ultrasonic wall thickness measurements and is propelled through the piping via a column of clean water which provides a path for the laser beam, and the coupling for the ultrasonic signals.


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