Author(s)

M. Fillon, P. Jackson & J. Lindsay E. Beaudrey & Cie, France

Abstract

Changing legislation in the United States and Europe has required the development of new screening systems. Screen manufacturers recognise that water intake systems have to address the challenge of drastically reducing or suppressing their impact on nature without reducing their efficiency or industrial reliability. This paper describes the development of Beaudrey’s Water Intake Protection (WIP) system and application at Omaha North Power Station in the USA, as well as describing other environmentally friendly systems developed by Beaudrey. The results of the Omaha North Power Station application of the WIP recovery and return system suggest that little if any mortality could be attributed to impingement and that fish impinged, removed and recovered from the WIP screen exhibited survival rates consistently at or above the performance standard of the USA’s suspended Clean Water Act Phase II rule of 80 to 95 percent reduction in impingement losses, and therefore is progressing towards becoming classified as ‘best available technology’ (BAT) for fish protection at water intakes. Keywords: water intakes, best available technology, fish recovery and return, screening systems, fish survival.

Keywords

water intakes, best available technology, fish recovery and return, screening systems, fish survival.