Conclusions
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1.
The chemical composition of the water of the Mingechaur reservoir changes little during the year.
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2.
The corrosion rate of St. 3 is within 0.112–0.038 g/m2·h and decreases with time. Corrosion becomes more pitted with increase of the depth of submergence.
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3.
For the main intake of the Mingechaur station the recommended protective values of the potentials and current densities for cathodic protection of St. 3 are as follows: in the winter, −960 mV, 1.25 mA/dm2; in the spring. −950 mV, 1.5 mA/dm2; in the summer, −980 mV, 1.75 mA/dm2; in the fall, −1050 mV, 2.25 mA/dm2. Cessation of corrosion of St. 3 was observed at these values of current density.
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Literature Cited
V. A. Pritula, Cathodic Protection of Pipelines and Tanks [in Russian], Gostoptekhizdat (1950).
V. V. Romanov, Methods of Investigating Metal Corrosion [in Russian], Metallurgiya (1965).
N. D. Tomashov, Corrosion of Metals with Oxygen Depolarization [in Russian], Izd. AN SSSR (1947).
Additional information
Translated from Gidrotekhnicheskoe Stroitel'stvo, No. 7, pp. 29–31, July, 1972.
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Spirin, A.A., Shikhaliev, Y.Z. Electrochemical protection against corrosion of underwater structures of the V. I. Lenin Mingechaur hydroelectric station. Hydrotechnical Construction 6, 657–660 (1972). https://doi.org/10.1007/BF02377798
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DOI: https://doi.org/10.1007/BF02377798