Diagnostics of a hydraulic turbine failure


This paper presents the failure analysis and diagnostic of a hydraulic turbine. Shortly after a maintenance revision the thrust bearing of the turbine was destroyed when the turbine was put into operation. The damaged bearing was examined and the possible causes discussed. To identify the problem that led to the failure of the thrust bearing, a comprehensive on-site measurement campaign was done. Vibrations, pressures, temperatures and operating parameters were acquired at different operating conditions of the turbine. The analysis of the data allowed to determine the source of the problem and to implement a solution.The authors would like to thank the company Endesa Generación and the XFLEX HYDRO 2020 research and innovation program under grant agreement No 857832FLEX.Peer ReviewedPostprint (published version

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