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Displaying records 220 through 220 of 2180
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Title: An ultrasonic pipeline inspection system
Category: Pigsource Papers
Downloadable: Yes 
Catalog No.: pg3070e
Date of Publication: 1991
Price: $25.00 US
Authors: P M Maltby, J C Hamilton
Abstract: In one form or another pipeline-inspection services have been around as long as pipelines themselves. However, the internal inspection of pipelines by means of instrumented vehicles operating within the line has existed only since about 1965.

Initially, only magnetic-flux leakage (MFL) technology was available for inspecting the lines for wall thinning caused by corrosion and other things. The emphasis was on "high-resolution" inspection of the pipe wall and, by the time the improved MFL equipment was being offered to the industry, ultrasonic capability was also being offered on a somewhat tentative basis. Those committed to ultrasonic inspection "pushed" the technology to the piping industry on the basis of an inherent capability of ultrasonic transducers to produce high-resolution inspection results. After all, everyone knows that ultrasonic technology is used regularly to map defects in test specimens in the laboratory. This paper will discuss several aspects of ultrasonic pipeline inspection.

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