Failure of a Steam Turbine Due to a Design Flaw
A steam turbine developed excessive noise and vibration during routine operation. It was found that the nut that locked the turbine disk In place had worked its way out from the threads and the disk had come of the shaft. Examination of the locking mechanism indicated that its design was responsible for the loosening of the nut. It was recommended that the locking mechanism be redesigned and changed in all existing turbines.
A.C. Raghuram, S. Radhakrishnan, R.V. Krishnan, V. Ramachandran, 1992. "Failure of a Steam Turbine Due to a Design Flaw", Handbook of Case Histories in Failure Analysis, Khlefa A. Esaklul
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