A Lesson in Repairing Cracked Kaplan Bladesby Robert van der Borg, Bonneville Lock & Dam, Cascade, Locks, OR, USA,
Abstract: 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 | Locks (dam) | Fatigue (material) | Dam failures | Brittleness | Hydraulics
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