In Situ Francis Turbine Blade Replacement due to Gross Cavitation

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A brief explanation! In 2011, when this project, paper and presentation were started, Peak Hydro Services was a wholly owned subsidiary of Voith Hydro Inc. Today Peak Hydro Services is proudly renamed Voith Hydro Services. No longer a subsidiary company; is an integral part of Voith Hydro Inc.’s After Market Business group In Situ Francis turbine Blade Replacement | NWHA Hood River| 2013-05-23 2
In This Presentation • Project Facts and History • Elements and Considerations of the business case • Powerhouse and Unit Description • Technical Aspects of Repair • Removal and Replacement of blades • Results and Conclusions • Acknowledgements In Situ Francis turbine Blade Replacement | NWHA Hood River| 2013-05-23 3
Page 1: In Situ Francis Turbine Blade Repla
Page 5 and 6: Project Facts and History • Manit
Page 7 and 8: Elements and Considerations of the
Page 9 and 10: Pointe du Bois Powerhouse Cross Sec
Page 11 and 12: Powerhouse Section and Photos In Si
Page 13 and 14: Overhead view of typical unit with
Page 15 and 16: Runner and Distributor Ring In Situ
Page 17 and 18: Typical condition of blades and ban
Page 19 and 20: Blade prepared for Laser Scan In Si
Page 21 and 22: Technical Aspects of Repair • Mat
Page 23 and 24: Technical Aspects of Repair • Pri
Page 25 and 26: Typical ‘as found’ condition In
Page 27 and 28: Removal and Replacement of blades i
Page 29 and 30: Gouging of fillet reveals voids In
Page 31 and 32: Blade prepared for removal In Situ
Page 33 and 34: Blade Removal and replacement In Si
Page 35 and 36: Old/New blades compare and trim In
Page 37 and 38: Removal and Replacement of blades i
Page 39 and 40: New blade being installed Presentat
Page 41 and 42: Repair Results and Conclusions •
Page 43 and 44: Acknowledgements: The following per

In Situ Francis Turbine Blade Replacement due to Gross Cavitation

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