Biological Evaluation of a Ristroph Screen at Indian Point Unit 2




alewife, entrance, forebay, Hudson River, Indian Point, intake, ristroph screens, screens, shad, survival, vertical travelling screens, impingement


None supplied. From Executive Summary: Con Edison commenced a study of the mechanical and biological effectiveness of a Ristroph-modified vertical travelling screen installed in one intake forebay at Indian Point Unit 2 in January 1985. The specific objectives of the biological studies were to evaluate the post-impingement survival of fish, and determine whether installing the screens inside the intake forebay would increase the number of fish impinged relative to the numbers impinged on a screen installed at the intake bay entrance. The results of the survival tests demonstrated that Ristroph-modified screens will substantially reduce the numbers of fish killed by impingement at Indian Point.

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