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The reliability of heat supply in cities is largely determined by the actual condition of pipelines, for example, corrosive and erosive wear. Comparative analysis of methodological approaches to assessing the technical condition of district heating networks shows that the most innovative and effective approach is internal pipe inspection using non-destructive magnetic testing. The article presents the results of research tests of the method in the context of its use for maintenance and retrofitting of the heating infrastructure in Yekaterinburg, a Russian city with a complex topology of utility networks and extremely uneven tear and wear on some sections of the networks. The authors describe the techni- cal and economic peculiarities of using internal pipe inspection methods at various stages of testing and formulate qualitative and quantitative criteria for assessing the effectiveness of the method being presented. Recommendations have been suggested for the optimum application of the method by heat network operators, especially those operating and servicing district heating systems.
heating networks, inspection, overhaul, magnetic method, pipeline, pressure testing, techni- cal condition, economic efficiency
[1] Huang, F., Kang, J.-J., Yue, W., Liu, Х.-B., Fu, Z.-Q., Zhu, L.-N., She, D.-S., Ma, G.-Z., Wang, H.-D., Liang, J., Weng, W. & Wang, C.-B., Effect of heat treatment on erosion– corrosion of Fe-based amorphous alloy coating under slurry impingement. Journal of Alloys and Compounds, in press, 2019.
[2] Fan, L., Reis, S.T., Chen, G. & Koenigstein, M.L., Corrosion resistance of pipeline steel with damaged enamel coating and cathodic protection. Coatings, 8, p. 185, 2018. https://doi.org/10.3390/coatings8050185
[3] Jouhara, H., Chauhan, A., Nannou, T., Almahmoud, S., Delpech, B. & Wrobel, L.C., Heat pipe based systems – Advances and applications. Energy, 128, pp. 729–754, 2017. https://doi.org/10.1016/j.energy.2017.04.028
[4] Xu, Q., Feng, J., Liu, L., Zhou, J., Ye, G. & Chang, C., Analysis of mechanical-fluid- thermal performance of heat pipeline system with structural deformation effects. International Journal of Heat and Mass Transfer, 128, pp. 12–23, 2019. https://doi. org/10.1016/j.ijheatmasstransfer.2018.08.122
[5] Carvalho, A.A., Rebello, J.M.A., Souza, M.P.V., Sagrilo, L. & Soares, S.D., Reliability of non-destructive test techniques in the inspection of pipelines used in the oil indus- try. International Journal of Pressure Vessels and Piping, 85(11), pp. 745–751, 2008. https://doi.org/10.1016/j.ijpvp.2008.05.001
[6] Barkanov, E.N., Dumitrescu, A. & Parinov I.A., Non-destructive Testing and Repair of Pipelines, Springer: Cham, 2018. 451 p.
[7] Upgrading the performance of district heating networks. Technical and non-technical approaches. A Handbook, WIP Renewable Energies: Munich, Germany, 2019, https:// www.upgrade-dh.eu/images/Publications%20and%20Reports/D2.5_2019-07-02_ Upgrade-DH_Handbook_EN.pdf. Accessed on: 15 Dec. 2019
[8] Kruczek, T., Determination of annual heat losses from heat and steam pipeline net- works and economic analysis of their thermomodernisation. Energy, 62, pp. 120–131, 2013. https://doi.org/10.1016/j.energy.2013.08.019
[9] Gitelman, L.D., Kozhevnikov, M.V. & Kaplin, D.D., Asset management in grid com- panies using integrated diagnostic devices. International Journal of Energy Production and Management, 4(3), pp. 230–243, 2019. https://doi.org/10.2495/eq-v4-n3-230-243
[10] Baev, I., Dzyuba, A., Solovyeva, I. & Kuzmina, N., Improving the efficiency of using small-distributed generation systems through mechanisms of demand management for electricity and gas. International Journal of Energy Production and Management, 3(4), pp. 277–291, 2018. https://doi.org/10.2495/eq-v3-n4-277-291
[11] Gudmundsson, O., Thorsen, J.E. & Zhang, L., Cost analysis of district heating com- pared to its competing technologies. WIT Transactions on Ecology and The Environ- ment, 176, pp. 107–118, 2013.
[12] Sernhed, K. & Jönsson, M., Risk management for maintenance of district heating networks. Energy Procedia, 116, pp. 381–393, 2017. https://doi.org/10.1016/j.egy- pro.2017.05.085
[13] Gitelman L.D., Kozhevnikov M.V. & Gavrilova T.B., Managing productive assets of energy companies in periods of crisis. In Syngellakis, S., Brebbia, C., eds., Challenges and Solutions in the Russian Energy Sector. Innovation and Discovery in Russian Sci- ence and Engineering, Springer: Cham, pp. 55–61, 2018.
[14] Implementing ITU-T International Standards to Shape Smart Sustainable Cities: The Case of Moscow, 2018, https://www.itu.int/dms_pub/itu-t/opb/tut/T-TUT-SSCIOT- 2018-PDF-E.pdf. Accessed on: 15 Dec. 2019.
[15] Zimmerman, N.A., Dahlquist, E. & Kyprianidis, K.G., Towards on-line fault detec- tion and diagnostics in district heating systems. Energy Procedia, 105, pp. 1960–1966, 2017. https://doi.org/10.1016/j.egypro.2017.03.567
[16] Miyata, S., Lim, J., Akashi, Y., Kuwahara, Y. & Tanaka, K., Fault detection and diagnosis for heat source system using convolutional neural network with imaged faulty behavior data. Science and Technology for the Built Environment, 2019, https://www.tandfon- line.com/doi/pdf/10.1080/23744731.2019.1651619?needAccess=true. Accessed on: 15 Dec. 2019.
[17] Ghavamian, A., Mustapha, F., Baharudin, B.H.T. & Yidris, N., Detection, localisation and assessment of defects in pipes using guided wave techniques: A review. Sensors, 18, p. 4470, 2018.
[18] Safizadeh, M.S. & Azizzadeh, T., Corrosion detection of internal pipeline using NDT optical inspection system. NDT&E International, 52, pp. 144–148, 2012. https://doi. org/10.1016/j.ndteint.2012.07.008
[19] Shi, Y., Zhang, C., Li, R., Cai, M. & Jia, G., Theory and application of magnetic flux leakage pipeline detection. Sensors, 15, pp. 31036–31055, 2015. https://doi. org/10.3390/s151229845
[20] Gitelman, G., Magaril, E., Kozhevnikov, M., Genon, G., Senor, A.M. & Panepinto, D., Building an eco-effective district heating management system in a city. E3S Web of Conferences, 6, p. 03012, 2016.