Corrosion Problems In Turbines

Abstract

PaperPg. 83-90.Gas turbines have been experiencing hot corrosion problems for over 25 years. These problems comprise two main types: vanadium attack and sulfidation. This paper deals with the problem of sulfidation corrosion, a name which is not accurately descriptive, as will be seen. In line with the philosophy of the 2nd Turbomachinery Symposium, the scope of this paper will be aimed at presenting one particular experience of the author: the problems undergone by Westinghouse W-191-G gas turbine installed in the Tachira Plant of C.A. de Administracion y Fomento Electrico (CADAFE) located in La Fria. Tachira State, Venezuela, near the Colombian border. No attempt will be made to delve into the purely theoretical or mathematical aspects of the problem, but concurrently with the analysis of the different aspects of the problem, the necessary theoretical background will be mentioned to support our reasoning and observations