Features & BenefitsUltraScan™ WM can detect and measure precisely mid-wall anomalies such as laminations and inclusions. Many pipeline operators use a baseline UltraScan™ WM inspection to confirm the quality of new construction before commissioning. Dual-diameter versions of UltraScan™ WM are available, or can be engineered to meet your needs. To deliver its full potential, ultrasound must be coupled to the pipewall by a liquid medium. To inspect a dry pipeline, UltraScan™ WM is run in a liquid batch. Analysis & ReportingUsing the UltraScan™ WM tool’s ability to map the precise depth of defects, three-dimensional color contour plots are produced, enabling the operator to quickly identify and assess problem areas. The upper section of the display shows combined data from all sensors. The lower section enables data from single sensors to be displayed, giving an accurate reading of the defect dimensions.
The UltraScan™ WM report lists and describes all defects above a selected threshold level. The accuracy of the data facilitates RStreng and similar advanced MAOP calculations. OperationUltrasound testing is widely used in quality control and materials investigation. A transducer—a combined transmitter and receiver of ultrasound frequencies—directs pulses into the piece to be tested. The pulses are reflected back from the front and rear surfaces and from any discontinuities that may be encountered within the piece. The time taken for the various echoes to return to the transducer can be converted into a precise measurement of the distance between the reflecting surfaces and the receiver. The greatest challenge in adapting ultrasound to pipeline inspection was holding the transducers at an unchanging distance from the pipewall, however rough the ride. The solution was to mount them on a flexible carrier at the rear of the tool. Its ability to follow ovalities, dents and changes in diameter protects the transducers from damage while maintaining the correct spatial relationship. Each transducer aims high frequency pulses at the pipewall as the tool moves through the pipe. Two values are recorded from each. |
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Precise Measurement of Pipeline FeaturesThe first UltraScan™ WM inspection tool was launched in 1985. Ultrasound differs from MFL in its ability to deliver precise, direct measurements of pipeline features. The data it generates is ideally suited to advanced calculations of MAOP and other science-based techniques for assessing pipeline condition and fitness-for-purpose. |
