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Materials Science

, Volume 48, Issue 2, pp 225–230 | Cite as

Corrosion of the Internal Wall of a Field Gas Pipeline

  • S. Yu. Kovalenko
  • A. O. Rybakov
  • A. V. Klymenko
  • L. H. Shytova
Science for Production

We have determined the causes of depressurization of a pipeline of diameter 114.30 mm and wall thickness 6.02 mm (pipe steel of category X60), which transports natural gas from the gas field to the gathering point. We have performed spectral, electrochemical, and metallographic investigations of a metal fragment from the damaged pipe as well as chemical analysis of the corrosion products on the wall internal surface (X-ray microspectral analysis). Polarization measurements have been carried out in deaerated solutions and those aerated by air oxygen, having different salt content. It has been shown that, with increase in the salt content, the corrosion resistance of pipe steel decreases, and the corrosion rate increases from 0.06 to 0.89 A/cm2 under aerated conditions and from 0.16 to 1.48 A/cm2 under deaerated.

Keywords

corrosion gas pipeline depressurization corrosion rate aerated and deaerated conditions 

References

  1. 1.
    S. E. Zdol’nik, O. M. Rozhko, A. R. Panteleeva, et al., “A complex approach to solving the problems of corrosion of field pipelines at the ‘Rosneft’-Yuganskneftegaz Ltd’ with the use of corrosion inhibitor SNPKh-1004 bactericide,” Zashch. Korr., No. 6, 62–65 (2007).Google Scholar
  2. 2.
    TU U 33.2-30019801-001:2006. (YuIATs.411251.001 TU). System of the Corrosion Monitoring of SKMT Pipelines [in Ukrainian], Registered in the State List of Means of Measurement Technology, No. U2308-06.Google Scholar
  3. 3.
    GOST 18895-97. Steel. Method of Photoelectric Spectral Analysis [in Russian], Minsk (1997).Google Scholar
  4. 4.
    A. S. Kaplan et al., GOST 1778-70. Steel. Metallographic Methods of the Determination of Nonmetallic Inclusions [in Russian], Izd. Standartov, Moscow (1970).Google Scholar
  5. 5.
    GOST 5639-82. Steels and Alloys. Methods of the Detection and Determination of Grain Size [in Russian], Izd. Standartov, Moscow (1982).Google Scholar
  6. 6.
    GOST 5640-68. Steel. Metallographic Method of the Evaluation of Microstructure of Sheets and Straps [in Russian], Izd. Standartov, Moscow (1968).Google Scholar

Copyright information

© Springer Science+Business Media New York 2012

Authors and Affiliations

  • S. Yu. Kovalenko
    • 1
  • A. O. Rybakov
    • 1
  • A. V. Klymenko
    • 1
  • L. H. Shytova
    • 1
  1. 1.Paton Institute of Electric Welding, Ukrainian National Academy of SciencesKyivUkraine

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