In-Depth Field Evaluation: Dust-Control Technology for Asphalt Pavement Milling at U.S. Highway 2 resurfacing project, Midwest Asphalt, contractor, Wilton, Minnesota, June 20 through 22, 2006

Details

• Alternative Title:
  In-Depth Field Evaluation...Dust-Control Technology for Asphalt Pavement Milling at U.S. Highway 2 resurfacing project, Midwest Asphalt, contractor, Wilton, Minnesota, June 20 through 22, 2006
• Personal Author:
  Blade, Leo M. ; Chekan, Gregory J. ; Colinet, Jay F. ; Garcia, Alberto ; Shulman, Stanley A.
• Corporate Authors:
  National Institute for Occupational Safety and Health. Division of Applied Research and Technology
• Description:
  As part of an ongoing study to evaluate the effectiveness of dust-control systems on pavement-milling machines, a field survey was performed during milling of asphalt on a rural four-lane divided highway. The objective of this survey was to estimate the reduction in respirable dust emissions and workers' exposures that could be achieved through the use of higher water-flow rates through the milling machine's water spray system. The effectiveness of the dust controls examined in this study was evaluated by measuring the reduction in the respirable dust and respirable quartz exposures in personal and area samples collected during this typical milling job. Increasing the water-flow rates to the spray nozzles at the cutter drum from an average of about 16 gallons per minute (gpm) to an average of about 18.5 gpm resulted in no clear reduction in measured respirable dust concentrations at area air monitoring locations around the machine. The following factors make the possibility of detecting sizable reduction unlikely for this study: 1) the relatively small difference in the water flow rates
  
  and 2) the considerable interruption in the flow of trucks removing the milled asphalt, leading to substantial down time in the actual milling. Both of these may explain the ineffectiveness of the water-flow levels seen, which is evident from examination of the data collected. Long time-period respirable dust and quartz results reveal a minimal average reduction from low to high water-flow rates, and the various examinations of the real-time monitoring data, using both long and short time periods, reveal conflicting results with no evidence of reductions in respirable dust concentrations.
  
  
• Subjects:
  Construction Industry Dust Engineering Manufacturing And Industrial Facilities Occupational Health Safety Silicon Dioxide
• Keywords:
  Construction Control-technology Dust-control Engineering-controls Machine-operation Machine-operators OSHA Region 5 Respirable-dust Road-construction Road-surfacing Silica-dusts

  More +
• Series:
  Engineering and Physical Hazards Survey Reports
• DOI:
  https://doi.org/10.26616/NIOSHEPHB28215a
• Publisher:
  National Institute for Occupational Safety and Health
• Document Type:
  Text
• Name as Subject:
  Midwest Asphalt
• Genre:
  Field Study
• Place as Subject:
  Minnesota ; Wilton (MN) ; OSHA Region 5
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  DART - Division of Applied Research and Technology ; EPHB - Engineering and Physical Hazards Branch
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  1-31
• NIOSHTIC Number:
  nn:20036132
• NTIS Accession Number:
  PB2010-103868
• Citation:
  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, EPHB 282-15a, 2009 Sep ; :1-31
• CAS Registry Number:
  Quartz (SiO2) (CAS RN 14808-60-7) ; Asphalt (CAS RN 8052-42-4)
• Federal Fiscal Year:
  2009
• NORA Priority Area:
  Manufacturing
• Peer Reviewed:
  False
• NAICS and SIC Codes:
  1611 - Highway and street construction - (SIC) ; 237310 - Highway, Street, and Bridge Construction - (NAICS)
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:d6292d8ad44832ba58e54f18da75ee539e5aff1e5957effc6ef4165561e13367fa7796b933e77f7d1597af36522aa1449492bc3a2fd43b9b4cffd0274c1e3350
• Download URL:
  https://stacks.cdc.gov/view/cdc/174938/cdc_174938_DS1.pdf
• File Type:
  [PDF - 396.08 KB ]