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Imaging of pipeline irregularities using a PIG system based on reflection mode ultrasonic sensors

Idroas, M. and Abd. Aziz, M. A. F. and Zakaria, Z. and Ibrahim, M. N. (2019) Imaging of pipeline irregularities using a PIG system based on reflection mode ultrasonic sensors. International Journal of Oil, Gas and Coal Technology, 20 (2). pp. 212-223. ISSN 1753-3317

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Official URL: http://dx.doi.org/10.1504/IJOGCT.2019.097449

Abstract

Natural gas transmission pipelines age after a certain duration and are prone to internal anomalies due to the presence of carbon dioxide and hydrogen sulphide in the natural gas constituents. An intelligent pipeline inspection gauge (PIG) is one method that is used to evaluate pipeline integrity, particularly damage resulting from corrosion threats. In this paper, an ultrasonic prototype PIG was developed that incorporates reflection mode ultrasonic sensors to measure anomalies on the internal surfaces of pipelines. The system consists of ultrasonic sensors, conditioning circuits and a data acquisition system (DAS). Sixty ultrasonic sensors were used mode at a frequency of 390 kHz. Surface anomalies were simulated at different locations on the internal surface of the pipeline to simulate changes in the pipe wall thickness. Variation in the measured distances implied the existence of surface anomalies. The results showed that the percentage error was less than ±0.50%.

Item Type:Article
Uncontrolled Keywords:PIG, Pipeline
Subjects:T Technology > TP Chemical technology
Divisions:Chemical and Energy Engineering
ID Code:89582
Deposited By: Widya Wahid
Deposited On:22 Feb 2021 13:55
Last Modified:22 Feb 2021 13:55

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