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Title: Turbine imaging technology assessment

Abstract

The goal of this project was to identify and evaluate imaging technologies for observing juvenile fish within a Kaplan turbine, and specifically that would enable scientists to determine mechanisms of fish injury within an operating turbine unit. This report documents the opportunities and constraints for observing juvenile fish at specific locations during turbine passage. These observations were used to make modifications to dam structures and operations to improve conditions for fish passage while maintaining or improving hydropower production. The physical and hydraulic environment that fish experience as they pass through the hydroelectric plants were studied and the regions with the greatest potential for injury were defined. Biological response data were also studied to determine the probable types of injuries sustained in the turbine intake and what types of injuries are detectable with imaging technologies. The study grouped injury-causing mechanisms into two categories: fluid (pressure/cavitation, shear, turbulence) and mechanical (strike/collision, grinding/pinching, scraping). The physical constraints of the environment, together with the likely types of injuries to fish, provided the parameters needed for a rigorous imaging technology evaluation. Types of technology evaluated included both tracking and imaging systems using acoustic technologies (such as sonar and acoustic tags) and optic technologies (such asmore » pulsed-laser videography, which is high-speed videography using a laser as the flash). Criteria for determining image data quality such as frame rate, target detectability, and resolution were used to quantify the minimum requirements of an imaging sensor.« less

Authors:
 [1];  [1]
  1. Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Publication Date:
Research Org.:
EERE Publication and Product Library, Washington, D.C. (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Wind and Water Technologies Office (EE-4W)
OSTI Identifier:
1218170
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
image; imaging; juvenile; fish; Kaplan; turbine(s); injury; passage; modifications; physical; hydraulic; biological; intake; fluid; pressure; cavitation; shear; turbulence; mechanical; strike; collision; grinding; pinching; scraping; tracking; acoustic; sonar; tag(s); optic; pulsed-laser; pulsed; laser; videography; high-speed; flash; detectability; resolution; sensor

Citation Formats

Moursund, R. A., and Carlson, T. J. Turbine imaging technology assessment. United States: N. p., 2004. Web. doi:10.2172/1218170.
Moursund, R. A., & Carlson, T. J. Turbine imaging technology assessment. United States. https://doi.org/10.2172/1218170
Moursund, R. A., and Carlson, T. J. 2004. "Turbine imaging technology assessment". United States. https://doi.org/10.2172/1218170. https://www.osti.gov/servlets/purl/1218170.
@article{osti_1218170,
title = {Turbine imaging technology assessment},
author = {Moursund, R. A. and Carlson, T. J.},
abstractNote = {The goal of this project was to identify and evaluate imaging technologies for observing juvenile fish within a Kaplan turbine, and specifically that would enable scientists to determine mechanisms of fish injury within an operating turbine unit. This report documents the opportunities and constraints for observing juvenile fish at specific locations during turbine passage. These observations were used to make modifications to dam structures and operations to improve conditions for fish passage while maintaining or improving hydropower production. The physical and hydraulic environment that fish experience as they pass through the hydroelectric plants were studied and the regions with the greatest potential for injury were defined. Biological response data were also studied to determine the probable types of injuries sustained in the turbine intake and what types of injuries are detectable with imaging technologies. The study grouped injury-causing mechanisms into two categories: fluid (pressure/cavitation, shear, turbulence) and mechanical (strike/collision, grinding/pinching, scraping). The physical constraints of the environment, together with the likely types of injuries to fish, provided the parameters needed for a rigorous imaging technology evaluation. Types of technology evaluated included both tracking and imaging systems using acoustic technologies (such as sonar and acoustic tags) and optic technologies (such as pulsed-laser videography, which is high-speed videography using a laser as the flash). Criteria for determining image data quality such as frame rate, target detectability, and resolution were used to quantify the minimum requirements of an imaging sensor.},
doi = {10.2172/1218170},
url = {https://www.osti.gov/biblio/1218170}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Dec 01 00:00:00 EST 2004},
month = {Wed Dec 01 00:00:00 EST 2004}
}