engleski

Steam turbine moving blade failure caused by corrosion fatigue – case history

Corrosion fatigue has been identified as one of the leading causes of steam turbine rotor blades failure. Despite of numerous research and development in the area of preventing sudden rotor blades failure due to corrosion fatigue, in the practice these failures continue to occur. This paper just describes one of number historical cases of rotor blade fracture that was caused by corrosion fatigue. It was an industrial turbine installed in fertilizer production plant Petrokemija Kutina, Croatia. The broken blades were belonged to the turbine stage located in the phase transition zone (salt zone) of the turbine. The paper also describes the analysis of the failure cause and the modification of the turbine stage that was failed.

corrosion fatigue ; steam turbine ; balde ; failure

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