ELECTRODYNAMIC CRITERION FOR EVALUATING THE QUALITY OF UNDERGROUND PIPELINE INSULATION
DOI:
https://doi.org/10.15407/dopovidi2023.04.033Keywords:
electromagnetic field, underground pipeline, dispersion equation, insulating coating, substitute circuits, current attenuation, noncontact measurements, quality criterion, detection methodAbstract
A three-unit mathematical model is presented to describe the electromagnetic field of an underground pipeline. This model is based on the solutions of boundary value problems in electrodynamics for cylindrical structures, the theory of electric circuits with distributed parameters, and the theory of the distribution of electric currents and magnetic fields. Using this model, the dependence of field characteristics on the parameters of the pipe and the surrounding environment was investigated. Diagnostic methods and tools for examining the anti-corrosion protection of main pipelines and pipeline networks were developed. By comparing the field attenuation coefficient along the pipeline with the electromagnetic wave attenuation in the soil, an electrodynamic criterion for evaluating the quality of the protective coating in different areas can be proposed. Examples illustrating the prompt detection of areas with unsatisfactory insulation of underground main pipelines through non-contact current measurements are provided.
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Nikyforchyn, H. M., Polyakov, S. G., Chervatiuk, V. A., Orynyak, I. V., Slobodian, Z. V. & Dzhala, R. M. (2009). Strength and durability of oil and gas pipelines and storage tanks. Fracture mechanics and strength of materials: Reference manual. Ed. V.V. Panasyuk. Vol. 11. Lviv: Spolom, p. 504 (in Ukrainian).
Dzhala, R., Dikmarova, L., Dzhala, V. & Verbenets, B. (2021). Electromagnetic control of underground pipelines insulation. Kyiv: Naukova Dumka (in Ukrainian).
Technical diagnostics of materials and structures: Reference manual. (2018). Ed. Z.T. Nazarchuk. Vol. 4. Dzhala,
R. M., Dzhala, V. R., Ivasiv, I. B., Rybachuk, V. G., Uchanin, V. M. Electrophysical methods for nondestructive testing of defects in structural elements. Lviv: Prostir-M (in Ukrainian.).
Dzhala, R. M. (2001). Electromagnetic survey and control of corrosion of pipelines. Mechanics of fracture and strength of materials: References. Manual. Ed. V.V. Panasyuk. T.5: Non-destructive testing and technical diagnostics. Ed. Z. T. Nazarchuk. Lviv: G.V. Karpenko Institute of Phys. and Math. of the NAS of Ukraine. Part. 5, pp. 263-330 (in Ukrainian).
Stretton, J. A. (1948). Theory of electromagnetism. M.L. Gostekhizdat. P. 539 (in Russian).
Simonyi, K. (1956). Theoretishe elektrotechnik. Berlin: Ver Deutscher verlag der Wissensenschaften.
Dobushovsky, S. P. (1977). Constant propagation of electromagnetic waves in coaxial cylindrical structures. Selection and transmission of information. 51, pp. 42-47 (in Ukrainian).
Dykmarova, L. P. & Dzhala, R. M. (2000). Mathematical models of underground pipelines in the problems of corrosion control. Problems of management and informatics. 1, pp. 54-63 (in Ukrainian).
Sergovantsev, V. T., Artemov, V. A., Konev, K. A., Stepanov, V. E., Sulimin, V. D., Shchelkunov, Y. N. & Yamash- kin, N. P. (1984). Gas pipeline as a communication channel in telemechanics systems. Moscow: Nedra (in Russian).
Dzhala, R. M. & Dikmarova, L. P. (1999). Analysis of the informativeness of the current decay coefficient in the electromagnetic method of pipeline insulation control. Technical diagnostics and non-destructive testing. 3, pp. 45-50 (in Ukrainian).
Dzhala, R., Dzhala, V., Savula, R., Senyuk, O. & Verbenets’, B. (2019). Determination of components of transient resistance of underground pipeline. Procedia Structural Integrity. 16, pp. 218-222. https://doi.org/10.1016/j. prostr.2019.07.044
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