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Evaluation of Occupational Brake Dust Exposures at a Hydroelectric Dam
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2017/05/01
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Source: Cincinnati, OH: U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, HHE 2015-0047-3276, 2017 May
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Description:The Health Hazard Evaluation Program received a request from a safety manager at a hydroelectric dam. The manager was concerned about employee exposures to elements (metals and minerals) in brake dust when cleaning the brake and brush housings of hydroelectric turbine generators. While employees cleaned a generator during a scheduled shutdown, we collected air samples, work surface and hand wipes, and brake dust samples for elemental analysis. Airborne exposures to elements were well below their most protective occupational exposure limits for all powerhouse employees, regardless of work activity or location within the powerhouse. Sampling results showed that brake dust could escape from the interior of the turbine housing. Elements were detected at low concentrations on hands and work surfaces. Hand cleaning practices, the availability of disposable clothing, and the use of sticky mats helped reduce the migration of contaminants from work areas to non-work areas. We recommended evaluating employee's exposures to elements in the air during brake dust cleaning of the other two generators.
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Pages in Document:26 pdf pages
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Contributor:Booher, Donald E.;Fernback, Joe;Galloway, Ellen;Harney, Joshua M.;Moore, Kevin;Neumeister, Chuck;Taylor, Alan;Watts, Shawna;
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NIOSHTIC Number:nn:20049858
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NTIS Accession Number:PB2017-102700
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Citation:NIOSH [2017]. Evaluation of occupational brake dust exposures at a hydroelectric;dam. By Feldmann KD, King B. Cincinnati, OH: U.S. Department of Health and;Human Services, Centers for Disease Control and Prevention, National Institute for;Occupational Safety and Health, NIOSH Health Hazard Evaluation Report 2015-0047-;3276,;
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Federal Fiscal Year:2017
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Peer Reviewed:False
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[PDF-1.76 MB]