VESTNIK
Bashkirskogo universiteta

RUSSIAN
ISSN 1998-4812

Archive | Volume 20, 2015, No. 3.

APPLICATION OF COMPUTER MODELING FOR INTERPRETATION OF CONTROL MEASUREMENTS DATA IN PIPELINES CATHODIC PROTECTION SYSTEMS

Vestnik Bashkirskogo Universiteta. 2015. Vol. 20. No. 3. Pp. 786-789.
Bolotnov A. M.
Bashkir State University
32 Zaki Validi St., 450076 Ufa, Republic of Bashkortostan, Russia.
Khisametdinov F. Z.
Bashkir State University, Sibay branch
21 Belov St., 453838 Sibay, Republic of Bashkortostan, Russia.
Email: bolotnovam@mail.ru

Abstract

One of the most relevant directions of underground pipelines operation terms extension is the use of cathodic protection systems (CPS). The principle of cathodic protection functioning is in the shift of the protected construction metal potential to a negative side concerning the potential of its environment. Technically the functioning of CPS is ensured by the cathodic stations placed along the pipeline. The key parameters of protection are tension and density of current in “anode-soil-pipe” system. In the process of use of the pipeline the irreversible changes of isolation properties, having the impact on the CPS efficiency, occur. In this regard, the information on the current state of isolation is a necessary factor of functioning of CPS. In practice the electric parameters control measurements technology is used. The data obtained need an adequate interpretation for the estimation of the pipeline isolation current state on the concrete section. In this work, the methods of computer modeling are used for the solution of the problem described. In the analysis of control measurements results the local minimum of protective potential in the measurement point, closest to the anode, is observed on various pipeline sections. The authors of this work studied several possible reasons explaining the protective potential decrease near anode station. The additions made to the mathematical model make possible to receive the numerical results coordinated with natural measurements data, including the potential local minimum range. The analysis of numerical results allows us to conclude the possibility of the approach application for the solution of the tasks connected with interpretation of control measurements data for the underground pipelines CPS.

Keywords

  • • computer modeling
  • • electric field
  • • cathodic protection
  • • interpretation of results of measurements

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