Hydrotechnical Construction

, Volume 14, Issue 6, pp 601–605 | Cite as

Corrosion of the inside surface of penstocks

  • M. S. Trifel'
  • Yu. R. Yusufov
  • Yu. Z. Shikhaliev
Papers Experience with the Operation of Hydraulic Structures and Equipment Associated with Hydroelectric Power Plants
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Conclusions

  1. 1.

    The corrosion rate of steel in flowing water of the Mingechaur reservoir is within 0.47–1.08 mm/yr, decreasing rapidly with exposure [3, 4].

     
  2. 2.

    Considerable initial values of the cathodic current density, equal to 1–1.5 mA/dm2, are needed for cathodic protection of steel in the same flowing water; however, they decrease rapidly both as a result of the formation of cathode deposits and as a result of the formation of natural films and deposits on the metal.

     
  3. 3.

    Anodic dissolution of metal in a freshwater flow occurs at the same rates as in nonflowing water.

     

Keywords

Energy Source Flowing Water Corrosion Rate Power Generation Power Engineer 

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Literature cited

  1. 1.
    A. G. Khanlarova et al., “Mechanism of corrosion of steel in fresh waters”, in: Protection of Hydraulic Structures in River Water from Corrosion [in Russian], Énergiya, Moscow (1968).Google Scholar
  2. 2.
    M. S. Trifel' et al., “Characteristcs of a device and monitoring of cathodic protection of hydraulic turbines from cavitation erosion”, Gidrotekh. Stroit., No. 8 (1969).Google Scholar
  3. 3.
    Yu. Z. Shikhaliev et al., “Investigation of the electrochemical behavior of steel St. 3 under operating conditions of underwater metal elements of hydraulic structures of the Mingechaur hydroelectric station, “Uch. Zap. Azineftekhima, IX Ser., No. 5, Baku (1971).Google Scholar
  4. 4.
    A. A. Spirin and Yu. Z. Shikhaliev, “Protection of the steelwork of structures of the Mingechaur hydroelectric station from corrosion,” Gidrotekh. Stroit., No. 8 (1974).Google Scholar

Copyright information

© Plenum Publishing Corporation 1980

Authors and Affiliations

  • M. S. Trifel'
  • Yu. R. Yusufov
  • Yu. Z. Shikhaliev

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