tailieunhanh - Wind Turbine Health Impact Study: Report of Independent Expert Panel

The dashpot adds temporary speed droop to the governor. Permanent speed droop alone does not provide adequate stability for units that operate is isolation or off line. Droop through the dashpot is added temporarily to match the response of the governor to that of the unit. The dashpot consists of a large dashpot plunger and a small dashpot plunger connected hydraulically through an oil reservoir. The large dashpot plunger is connected rigidly to the servomotor through the restoring cable and linkage. The small dashpot plunger is connected to the pilot valve through a floating lever. | Wind Turbine Health Impact Study Report of Independent Expert Panel January 2012 Prepared for Massachusetts Department of Environmental Protection Massachusetts Department of Public Health WIND TURBINE HEALTH IMPACT STUDY Expert Independent Panel Members Jeffrey M. Ellenbogen MD MMSc Assistant Professor of Neurology Harvard Medical School Division Chief Sleep Medicine Massachusetts General Hospital Sheryl Grace PhD MS Aerospace Mechanical Engineering Associate Professor of Mechanical Engineering Boston University Wendy J Heiger-Bernays PhD Associate Professor of Environmental Health Department of Environmental Health Boston University School of Public Health Chair Lexington Board of Health James F. Manwell PhD Mechanical Engineering MS Electrical Computer Engineering BA Biophysics Professor and Director of the Wind Energy Center Department of Mechanical Industrial Engineering University of Massachusetts Amherst Dora Anne Mills MD MPH FAAP State Health Officer Maine 1996-2011 Vice President for Clinical Affairs University of New England Kimberly A. Sullivan PhD Research Assistant Professor of Environmental Health Department of Environmental Health Boston University School of Public Health Marc G. Weisskopf ScD Epidemiology PhD Neuroscience Associate Professor of Environmental Health and Epidemiology Department of Environmental Health Epidemiology Harvard School of Public Health Facilitative Support provided by Susan L. Santos PhD FOCUS GROUP Risk Communication and Environmental Management Consultants Table of Contents Executive ES 1 Panel ES 2 Process ES 3 Report Introduction and ES 4 ES Noise. ES-4 ES Production of Noise and Vibration by Wind Turbines. ES-4 ES Health Impacts of Noise and Vibration. ES-5 ES Shadow Flicker. ES-7 ES Production of Shadow Flicker. ES-7 . b Health Impacts of Shadow Flicker. ES-7 ES Ice Throw. ES-8 ES Production of Ice Throw. ES-8 ES .