Use of Microwaves for the Detection of Corrosion Under Insulation: A Sensitivity Study

Jones, R. E.; Simonetti, F.; Lowe, M. J. S.; Bradley, I. P.

doi:10.1063/1.3592135

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Ultrasonic Inspection1

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2022

2023

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“…When ultrasonic waves encounter discontinuities such as water or a reduction in pipe wall thickness, these waves will be reflected back, collected, and further analysed [76]. The inspection coverage limit of long-range guided wave ultrasonic testing is 50 m [77]. In common practices, the frequencies of ultrasonic waves range from 0.1 to 50 MHz.…”

Section: Ultrasonic Inspectionmentioning

confidence: 99%

A Review of Corrosion under Insulation: A Critical Issue in the Oil and Gas Industry

Cao

Pojtanabuntoeng

Esmaily

et al. 2022

Metals

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Corrosion under insulation (CUI) is defined as any form of external corrosion that occurs on the underlying metal beneath insulated equipment, due to water ingress through the insulation layer. This type of corrosion is frequently observed in oil and gas production, where insulated piping is prevalent, and has historically remained a predominant materials integrity issue. The prediction and direct visualisation of CUI are challenging tasks because of the coverage of the insulation layer(s) and any external jacketing or cladding. Several factors, including the local/ambient environment, system design, and the piping installation process, can influence how CUI initiates and propagates. In this review, CUI background, CUI monitoring, and CUI mitigation strategies are discussed.

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Section: Ultrasonic Inspectionmentioning

confidence: 99%