Abstract
The resistance of sensitized 12Kh18N10T steel in aqueous electrolyte solutions, which model steaming condensates of the main refinery plants, namely, primary oil processing, reforming, and heavy fraction hydrorefining, is studied using chemical and electrochemical methods according to the Russian State Standard GOST 9.912. Condensate models were proposed based on many years of analyzing the steaming condensates of the Kirishi refinery plants. The main parameters of the steel susceptibility to pitting corrosion (pitting factor and electrochemical bases of pitting resistance) of the austenitic steels of Kh18N10T grade are shown to depend on the concentration of corrosive anions and their ratios in the solution. A system of correlation dependences is proposed for forecasting the probability of pit formation in the solutions.
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