A Lesson in Repairing Cracked Kaplan Blades

by Robert van der Borg, Bonneville Lock & Dam, Cascade, Locks, OR, USA,

Document Type: Proceeding Paper

Part of: Water Power '87


Each of the three units that failed at Bonneville Lock and Dam started with a fatigue break and ended in a brittle fracture. Consequently, a comprehensive in-house weld procedure was developed to repair the cracks in the turbine runner blades. Details of this procedure are given.

Subject Headings: Cracking | Welding | Turbines | Rehabilitation | Locks (dam) | Fatigue (material) | Brittleness

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