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research-article

Evaluation of Magnetostrictive Transducers for Guided Wave Monitoring of Pressurized Pipe at 200?C

[+] Author and Article Information
Sergey Vinogradov

Southwest Research Institute, 6220 Culebra Road San Antonio, TX 78238
sergeyv158@hotmail.com

Thomas Eason

BP Products North America, 150 W. Warrenville Rd., Naperville, IL 60563
tom.eason@bp.com

Mark Lozev

BP Products North America, 150 W. Warrenville Rd., Naperville, IL 60563
mark.lozev@bp.com

1Corresponding author.

ASME doi:10.1115/1.4038726 History: Received August 14, 2017; Revised December 06, 2017

Abstract

Many piping networks in processing plants, such as refineries, chemical plants, and electric power generation plants, are operated at elevated temperatures (= 250°F or 121°C). Failure of these insulated high temperature pipes can cause a major disruption of plant operation. In addition to inspection during the regular plant shutdowns, processing industries are looking for ways to inspect and monitor these pipelines on-line to ensure safe operation of the plants.

Permanent monitoring of high temperature structures would require addressing the following technical problems: supporting the sensor functionality at high temperatures, ensuring the probe durability, and maintaining good coupling of the probe to the structure. In this work, a probe utilizing magnetostrictive transduction was tested on a mockup at 200°C and produced a steady high amplitude signal over a period of 270 days. Probe performance parameters such as signal to noise ratio, data reproducibility, and sensitivity to anomalies are discussed.

Copyright (c) 2017 by ASME
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