Application of high power ultrasonics for fouling removal in submerged structures

Lais, Habiba; Lowe, Premesh Shehan; Kanfoud, Jamil; Gan, Tat-Hean

doi:10.1109/oceanse.2017.8084785

Cited by 6 publications

(6 citation statements)

References 14 publications

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“…Previous work has shown capabilities to remove inner wall pipe fouling noninvasively using ultrasounds [13][14][15][16]. This is carried out by the attachment of a High-Power Ultrasonic Transducer (HPUT) onto the outer wall of a water-filled pipe.…”

Section: Fouling Removalmentioning

confidence: 99%

Ultrasonic Transducer Array Performance for Improved Cleaning of Pipelines in Marine and Freshwater Applications

et al. 2019

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Fouling accumulation in pipelines is a well-known problem in industry across various applications. The build-up of fouling within a pipe can reach a detrimental state, leading to pipe blockages that, in turn, result in pipe bursts. As pipelines transport fluid up to hundreds of meters, a method to prevent and remove fouling at long distances is required to support an engineering structure without the requirement of halts for maintenance to be carried out. Underwater pipelines are currently deployed which must ensure that pipelines carrying crude oil do not reach a detrimental state which leads to pipe leaks or pipe bursts, resulting in a discharge of oil into the surrounding water. This work discusses an optimized ultrasonic cleaning transducer array which undergoes marinization. The marinized transducers are characterized for impedance and wave propagation across a fouled 6.2 m long, Schedule 40, 6-inch diameter carbon steel pipe. This study has shown that the addition of marinized material dampens the vibrational output from the High-Power Ultrasonic Transducer (HPUT) configuration. This reduction in vibration is most significant when the structure is filled with water, resulting in a marinized HPUT configuration dropping by up to 85% and a non-marinized HPUT configuration dropping by up to 80%.

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Section: Fouling Removalmentioning

confidence: 99%

Ultrasonic Transducer Array Performance for Improved Cleaning of Pipelines in Marine and Freshwater Applications

et al. 2019

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“…This approach augments the overall productivity and health of the equipment. In 2017, 42 the application of an ultrasonic transducer for removal of fouling in a submerged/marine structure was discussed. In 2019, 43 Root Cause Analysis (RCA) was applied to a monitoring system based on ultrasonic inspection, rather than relying on the use of an autonomous system, in order to increase the turbine shaft's remaining useful lifetime while using ultrasonic inspection.…”

Section: Ultrasonicmentioning

confidence: 99%

A heuristic approach on predictive maintenance techniques: Limitations and scope

Shukla

Nefti‐Meziani

Davis

2022

Advances in Mechanical Engineering

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In view of the trend towards Industry 4.0, intelligent predictive monitoring and decision-making processes have become a crucial requirement in today’s manufacturing industries to safeguard data exchange and industrial assets from damage that would thus prevent the achievement of overall company goals. For enhanced reliability and safe operation of machines, frequent maintenance of the process equipment and the linked auxiliaries in a plant is highly desirable. Poor maintenance of assets can add to downtime, which can in turn affect the overall cost-effectiveness of the plant. With traditional maintenance strategies and planned or timed-based maintenance, one replaces the faulty systems when they are found to be damaged or broken. However, an early and proactive prediction of machine or equipment fault and failure state enables the industry to take the necessary action to replace the faulty system well before it stops operating entirely. This paper briefly reviews the available predictive maintenance techniques for different applications from the perspective of Industry 4.0. Furthermore, the associated challenges and opportunities are identified and discussed.

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“…In addition, we have to cease the operation to use these methods [14,15]. Another e cient technique of fouling removal is ultrasound bath [16][17][18][19][20][21]. This method takes advantage of cavitation bubbles that implode at the surface of the fouling but, we still need to stop the pipeline operation to submerge the mechanical components in the ultrasound bath, and it is only suitable for small parts [20].…”

Section: Introductionmentioning

confidence: 99%

Improving the Descaling Rate of an In-situ Ultrasonic Fouling Removal Method for Industrial Water-filled Pipelines

Mohammadi,

Mobli,

Siahtiri

et al. 2023

Preprint

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Introducing innovative and environmentally friendly fouling removal methods for water-filled pipelines is essential nowadays to increase pipelines' safety and productivity and eliminate the limitations of traditional descaling methods. In this paper, we investigate the capability of high-power ultrasonic waves and cavitation phenomenon as an influential online fouling removal tool to remove the build-up fouling with a thickness of 1 mm on the inner surface of 4-inch low-carbon stainless steel pipes filled with water. First, we developed a FEM simulation to investigate the effect of ultrasonic power on the acoustic pressure at different distances from the transducer attached point on the pipe using Comsol Multiphysics. After that, we conducted an experimental and statistical investigation to validate our result from FEM analysis using a transducer set and PZT-4 piezoelectric attached to the pipes' outer surface. The results showed that increasing the transducer's electrical power would raise the fluid's acoustic pressure. Furthermore, we indicate that increasing the electrical power to 400 W results in a higher fouling removal rate in the pipe.

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Application of high power ultrasonics for fouling removal in submerged structures

Cited by 6 publications

References 14 publications

Ultrasonic Transducer Array Performance for Improved Cleaning of Pipelines in Marine and Freshwater Applications

Ultrasonic Transducer Array Performance for Improved Cleaning of Pipelines in Marine and Freshwater Applications

A heuristic approach on predictive maintenance techniques: Limitations and scope

Improving the Descaling Rate of an In-situ Ultrasonic Fouling Removal Method for Industrial Water-filled Pipelines

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