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In-Depth survey of dust control technology for asphalt milling at Northeast Asphalt, Inc., US Route 22 and SR 64 Projects, Wisconsin, report no. CT-282-12a.

Authors
Echt-A; Garcia-A; Shulman-S; Colinet-J; Cecala-A; Carlo-R; Zimmer-J
Source
NIOSH 2007 Jan; :1-32
NIOSHTIC No.
20031469
Abstract
A study was performed to evaluate the effectiveness of water spray controls for a cold-milling machine. The objective of this study was to quantify the exposure reduction that could be achieved through the use of higher water flow rates during pavement milling. 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 a typical milling job. Increasing the water flow to the cutter drum spray bars from about 5 gpm to about 9 gpm and from approximately 2 gpm to around 3 gpm at the conveyor sprays resulted in an overall reduction in respirable dust emissions of about 50%, and nearly as great a reduction in respirable quartz emissions. Those results varied by location, with the greatest reduction occurring at the conveyor sampling location.
Keywords
Control-technology; Engineering-controls; Region-5; Respirable-dust; Silica-dusts; Dust-control; Quartz-dust; Machine-operation; Construction; Construction-equipment; Asphalt-concretes; Asphalt-industry; Sampling; Exposure-assessment
Contact
National Institute for Occupational Safety and Health, Division of Applied Research and Technology, Engineering and Physical Hazards Branch, Mail Stop R-5, 4676 Columbia Parkway, Cincinnati, OH 45226-1998
CAS No.
8052-42-4; 14808-60-7
Publication Date
20070101
Document Type
Field Studies; Control Technology
Funding Type
Construction
Fiscal Year
2007
NTIS Accession No.
PB2007-107223
NTIS Price
A04
Identifying No.
CT-282-12a
NIOSH Division
DART; PRL
SIC Code
1611
Source Name
National Institute for Occupational Safety and Health
State
OH; PA; WI
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