Skip directly to search Skip directly to A to Z list Skip directly to page options Skip directly to site content

NIOSHTIC-2 Publications Search

Search Results

Engineering control technologies to reduce occupational silica exposures in masonry cutting and tuckpointing.

Authors
Meeker-JD; Cooper-MR; Lefkowitz-D; Susi-P
Source
Public Health Rep 2009 Jul-Aug; 124(Suppl 1):101-111
NIOSHTIC No.
20035534
Abstract
Objectives. A number of tasks in construction generate worker overexposures to respirable crystalline silica dust, which is a significant contributor to occupational mortality and morbidity. This study evaluated the performance of commercially available engineering controls used in dusty construction tasks commonly performed by bricklayers. Methods. Local exhaust ventilation (LEV) controls for a portable abrasive cutter and for tuckpointing grinders were examined at a bricklayers' training center, as were two stationary wet saws. Personal breathing zone air samples were collected with and without the use of LEV or water suppression during simulated concrete block cutting, brick cutting, and tuckpointing. Results. Compared with the use of no exposure control during block and brick cutting, the portable LEV unit significantly reduced mean respirable quartz exposures by 96% for block cutting and 91% for brick cutting (p,0.01). The use of stationary wet saws was also associated with 91% reductions in exposure (p,0.01). For tuckpointing, the reductions in mean respirable quartz concentrations were between 91% and 93% with the LEV controls (p,0.05). Conclusions. Reductions of up to 96% in mean respirable quartz concentration were observed between control and no-control scenarios. These reductions with commercially available off-the-shelf tools demonstrate the effectiveness of engineering control interventions to reduce crystalline silica exposures in construction. Strategies to further improve control performance and approaches for increasing control interventions in construction are needed.
Keywords
Breathing-zone; Construction; Construction-equipment; Construction-industry; Construction-materials; Construction-workers; Dust-control-equipment; Dust-counters; Dust-exposure; Dust-inhalation; Dust-particles; Dust-sampling; Engineering-controls; Epidemiology; Exposure-assessment; Exposure-levels; Exposure-methods; Inhalation-studies; Occupational-exposure; Occupational-hazards; Occupational-respiratory-disease; Particle-aerodynamics; Particulate-dust; Particulate-sampling-methods; Power-tools; Pulmonary-system; Pulmonary-system-disorders; Respiratory-system-disorders; Statistical-analysis; Ventilation; Ventilation-equipment; Work-areas; Work-environment; Worker-health; Work-operations; Workplace-studies; Work-practices
Contact
John D. Meeker, MS, ScD, CIH, Department of Environmental Health Sciences, University of Michigan School of Public Health, 6635 SPH Tower, 109 S. Observatory St., Ann Arbor, MI 48109
CODEN
PHRPA6
CAS No.
14808-60-7
Publication Date
20090701
Document Type
Journal Article
Email Address
meekerj@umich.edu
Funding Type
Cooperative Agreement; Construction
Fiscal Year
2009
NTIS Accession No.
NTIS Price
Identifying No.
Cooperative-Agreement-Number-U54-OH-008307
ISSN
0033-3549
Priority Area
Construction
Source Name
Public Health Reports
State
MI; NJ; MD
Performing Organization
Center to Protect Workers' Rights
TOP