Corrosion of the inside surface of penstocks
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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].
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.
Anodic dissolution of metal in a freshwater flow occurs at the same rates as in nonflowing water.
KeywordsEnergy Source Flowing Water Corrosion Rate Power Generation Power Engineer
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