Ask Young Clupeids if Kaplan Turbines are Revolving Doors or Blendersby Dilip Mathur, RMC Environmental Services, Drumore, United States,
Paul G. Heisey, RMC Environmental Services, Drumore, United States,
Abstract: Previous estimates of low survival (18 to 38 %) of young clupeids (American shad, blueback herring, and alewife) in passage through hydro turbines have led many to conclude that turbines are fish blenders. In recent studies survival of young clupeids ranged from 96 to 100 % (97.5 ± 4.5 %) at three different power stations equipped with Kaplan type turbines; at a Francis results demonstrate that Kaplan turbines rotating at slow speeds are benign exit routes.
Subject Headings: Turbines | Power plants | Fish management | Rotation
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