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Abstract

Three 1006 carbon steels team/water separators failed in a boiler in installation after several years of service. Annual inspection had revealed no evidence of deterioration until the last inspection, when they were removed from service. Metallurgical investigation determined that the separators had deteriorated because of erosion corrosion. Further analysis of the boiler operation revealed that operational changes made in the last year of service caused an increase in velocity of the water/steam mixture. It was recommended that the operating parameters for the boiler be reevaluated and prior levels of operation be reinstituted.

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George M. Goodrich, 1993. "Failure of Three Cyclone Separators", Handbook of Case Histories in Failure Analysis, Khlefa A. Esaklul

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