Model Test Study on Oil Leakage and Underground Pipelines Using Ground Penetrating Radar

Gao, Lei; Song, Hantao; Liu, Hanlong; Han, Cheng-Bo; Chen, Yumin

doi:10.1134/s1061830920050058

Cited by 6 publications

(1 citation statement)

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“…Other techniques are highlighted in pipeline monitoring, such as the use of ground penetration radars (GPR) in buried pipeline leak detection [17] and in sensing corrosion in these structures [18]. Normally, the GPRs used in corrosion monitoring are singlepolarization systems, which brings about some limitations in their measurements, such as restricted information regarding corrosion products such as the identification of rust and cracks; however, the use of a hybrid-polarization system, as proposed by Liu et al [19], to detect corrosion in concrete rebar in the early stages, makes it possible to identify this information, but with the limitation of not performing a quantitative assessment.…”

Section: Introductionmentioning

confidence: 99%

FBG-Based Accelerometer for Buried Pipeline Natural Frequency Monitoring and Corrosion Detection

Pereira,

Sousa,

Mesquita

et al. 2024

Buildings

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Pipelines are structures with great relevance in different industrial sectors and are essential for the proper functioning of the logistics that support today’s society. Due to their characteristics, locations, and continuous operation, allied with the huge network of pipelines across the world, they require specialized labor, maintenance, and adequate sensing systems to access their proper operation and detect any damage they may suffer throughout their service life. In this work, a fiber Bragg grating (FBG)-based optical fiber accelerometer (OFA), which was designed and calibrated to operate through wavelength and optical power variations using different interrogation setups, was fixed together with a pair of FBG arrays along a 1020 carbon steel pipeline section with the objective of monitoring the pipeline natural frequency (fn_pipeline) to indirectly evaluate the detection and evolution of corrosion when this structure was buried in sand. Here, corrosion was induced in a small area of the pipeline for 164 days, and the OFA was able to detect a maximum fn_pipeline variation of 3.8 Hz in that period. On the other hand, the attached FBGs showed a limited performance once they could successfully operate when the pipeline was unburied, but presented operational limitations when the pipeline was buried in sand. This was due to the inability of the structure to vibrate long enough under these conditions and obtained data from these sensors were insufficient to obtain the fn_pipeline.

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Section: Introductionmentioning

confidence: 99%