Kholodenko V.P., Zhigletsova S.K., Chugunov V.A., Rodin V.B., Kobelev V.S., Karpov S.V. |
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Abstract
Samples of soil, ground, electrolyte, corrosion products, and protective coating were taken
after excavating pipelines. The depth of stress corrosion cracks of the pipe steel was mostly
related to the numbers of sulfate-reducing and denitrifying bacteria. In certain types of soil,
damage correlated with the number of acid-producing microorganisms and aerobic chemoorganotrophs
(saprophytes). A correlation was found between the extent of stress-corrosion damage to pipelines
and the contents of reduced iron, sulfides, and organic carbon in surrounding ground. |
