Calculation of Steel Pipeline Corrosion Depth at the Galvanic Corrosive Element Operation
-
2018-06-20 https://doi.org/10.14419/ijet.v7i3.2.14566
-
steel oil pipeline, electrolytic corrosion, galvanic element, corrosion rate, corrosion depth. -
Abstract
The work is devoted to the issue of calculating the safe life of steel pipelines, which is in accordance with the definition of the residual thickness of the pipe wall.
The purpose of this work is to develop a dependence, permitting to calculate the corrosion depth of the steel pipeline in the crack of the insulation coating under the action of an electrolytic medium aggressive to the pipeline metal. To achieve this goal, the following tasks were solved: to develop a dependence based on the mathematical model of a local corrosion element, that would allow to calculate the steel pipeline corrosion depth in the crack of the insulating coating, which would be based on real parameters obtained during the structures examination; to conduct an experimental verification of the steel pipeline’s corrosion damage depth during the galvanic corrosion element’s operation.
Based on the mathematical model of the pipeline’s electrochemical corrosion in the crack of the insulating coating under the action of an the electrolytic medium aggressive to the pipeline metal, a dependence was obtained permitting to calculate the depth of the pipeline’s wall corrosion during the work of the macro-galvanic corrosion couples and the stable presence of an aggressive solution in the damaged zone. The experimental studies have proved that direct corrosion tests are consistent with the design values of the macro-galvanic couple’s current. The advantage of this model is the ability to predict the development of corrosion in time, regardless of the aggressive electrolyte’s chemical composition, the possibility of obtaining the required calculation parameters using the structures operated.
Â
-
References
[1] Polyakov, S., Klimenko, A., Malkova, O. Electrochemical monitoring pipelines for corrosion hazardous areas. Fiziko-chimichna mekhnanika materialov, No. 7 , Vol.2, (2008), рр.761 – 766.
[2] Zhdek, A., Hrudz, M. (2012). Determination of residual life long exploited oil, taking into account existing defects and corrosion conditions. Naukovy visnyk Ivano-Phrankivskogo natsiionalnogo universytetu naphty I hazu, no. 2(32), 58 – 66.
[3] Rihan Omar Rihan Electrochemical Corrosion Behavior of X52 and X60 Steels in Carbon Dioxide Containing Saltwater Solution (2013).Vol.16(1). 227-236 DDOI: 10.1590/S1516-14392012005000170
[4] Poberezhnyi L. Corrosion monitoring of transit gas pipelines / L.Ya. Poberezhnyi, A.I. Stanetskyi, V.V. Rudko // Bulletin of TNTU. – 2011. – No.3. – P. 20-26. INSPEC
[5] Stepova O. (2011). Technological safety operation of main oil pipelines. Zbirnyk naukovykh prats (galuzeve mashynobuduvannia, budivnytstvo), issue. 2(30), Poltava: Poltava National Technical Yuri Kondratyk University. 266 – 269
[6] Stepova, O. (2011). Ensuring environmental safety of oil exploitation by monitoring electrochemical parameters. Zbirnyk naukovykh prats (tekhnichni nauky), issue. 1(53), Rivne: Natsionalnyi universytet vodnogo hospodarstva, 201 – 207 .
[7] Becker, М. (2007). Ensuring reliable operation of the system oil transportation. Sbornіk dokladov nauchno-praktіcheskogo semіnara, Kyiv, Institute elektrocvarkу іmenі E.O. Patona, April, 17–18, 2007, 3–5.
[8] Rohoznyuk, B., Guiov, Yu. and Kuzmenko, Yu. (2000). Technical operation of underground corrosion protection of oil pipelines. [Technical operation of underground corrosion protection of oil pipelines], Kyiv: Tehdiagaz.
[9] Kornienko, S. and Kortubyak, O. (2008). Resources space underground geological Ukraine. Visnyk Kyivskoho universytetu. Seriya: Geologiya no. 43, 35–37.
[10] Miniailo, I.V. (2009) Determination of corrosion rate of metal pipes on the Urengoy-Chelyabinsk gas pipeline. News of Higher Educational Establishments. Oil and gas. Publisher: Tyumen Industrial University. - no6, 52-58.
[11] ІnstruktsÑ–ia po opredelenÑ–iu skorostÑ– korrozÑ–Ñ– metala stenok korpusov sosudov Ñ– truboprovodov na predprÑ–iatÑ–iakh Mynneftekhymproma SSSR (1983) Publisher: Volgograd,124Ñ. URL: http://meganorm.ru/Data2/1/4293801/4293801208.htm
[12] URL: https://all4study.ru/proizvodstvo/raschet-utoneniya-stenki-za-schet-korrozii.html
[13] Bridgeman, J. and Shankar, R. (1991) Erosion-corrosion data handling for reliable NDE. Nuclear Eng. And Design. no. 131, 285-297.
[14] H. Lee (2003) Thinned Pipe Management Program of Korean NPPs. S / Trans. of the 17th Inter. Conf. on Structure Mech. in Reactor Technology (SmiRT 17) Prague, Czech Republic. August 17-22, 1-8.
[15] Moolayil T.M. (2007) Mitigation of degradation of high energy secondary cуcle piping due to FAC and life management in Indian NPPs. Second international Symposium on Nuclear Power Plant Life Management from 15-18th October, 2007 at Shanghai China, 48 p.
[16] Baranenko V.I. (2010) Calculation of the rate of erosion-corrosion wear and residual life of pipelines AES. Proceedings of Higher Educational Institutions. Nuclear energy. no 2, 55-63
[17] Vorobeva G. (1975). Corrosion resistance of materials in aggressive environments of chemical industries. Handbook of Chemistry. М.: Chemistry, 816
[18] Romanov V.V. Methods for studying corrosion of metals (1965) М.: Metallurgy, 280
[19] Alekseeva N.V., Strizhevsky I.V. (1989). Mathematical modeling of the distribution of corrosion along the perimeter of the cross-section of the underground pipeline // Protection of metals. no 1.
[20] A.I. Elizarov, V.V. Zhurav (2008) About Some Aspects of Slot-Hole Corrosion Physics and chemistry of solid state Vol. 9, No 3, P. 635-638 URL:http://www.pu.if.ua/inst/phys_che/start/pcss/vol9/0903-29.pdf
[21] Stepova, O. and Paraschienko, I (2017) Modeling of the corrosion process in steel oil pipelines in order to improve environmental safety Eastern-European journal of enterprise technologies, industrial and technology systems. Vol. 2, No 1 (86), 15-20.URL: http://journals.uran.ua/eejet/article/view/96425
-
Downloads
-
How to Cite
Stepova, O., Parashchiienko, I., & Lartseva, I. (2018). Calculation of Steel Pipeline Corrosion Depth at the Galvanic Corrosive Element Operation. International Journal of Engineering & Technology, 7(3.2), 431-435. https://doi.org/10.14419/ijet.v7i3.2.14566Received date: 2018-06-23
Accepted date: 2018-06-23
Published date: 2018-06-20