Evaluation and control of respirable silica exposure during lateral drilling of concrete

Details

• Personal Author:
  Cooper MR ; Rempel D ; Susi, Pam
• Description:
  The primary objective of this case study was to compare silica exposure during lateral concrete drilling using (1) the usual, manual method with a pneumatic rock drill (Figure 1); (2) a movable jig that supports a pneumatic rock drill and increases the distance between the operator and the point of dust generation (Figure 2); and (3) the same jig equipped with a dust shroud and LEV system (Figure 3). A secondary objective was to determine whether use of the jig reduced noise exposure to the drill operator due to the increased distance created by the jig between the point of noise generation and the worker. Future studies will evaluate the ergonomic impact of the jig. Drilling was performed under "experimental conditions" intended to mimic those experienced by laborers on actual job sites. Test conditions were designed so that the independent variables were the use, or lack of use, of the vacuum dust control system, and use, or lack of use, of the jig. A single experienced laborer operated the tested equipment during all experimental trials. [Description provided by NIOSH]
• Subjects:
  Case Reports Construction Industry Construction Materials Dust Environmental Monitoring Noise Noise, Occupational Occupational Exposure Occupational Health Particulate Matter Quartz Safety Silicon Compounds Silicon Dioxide

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• Keywords:
  Case-studies Concretes Construction Construction-equipment Construction-industry Construction-materials Construction-workers Dust-control Dust-control-equipment Dust-exposure Employee-exposure Exposure-assessment Exposure-levels Exposure-limits Noise-control Particle-aerodynamics Pneumatic-equipment Pneumatic-tools Power-tools Quartz-dust Respirable-dust Road-construction Silica-dusts Silicon-compounds Silicosis Vacuum-equipment

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• ISSN:
  1545-9624
• Document Type:
  Text
• Funding:
  Cooperative Agreement
• Genre:
  Journal Article
• Place as Subject:
  California ; Maryland ; OSHA Region 3 ; OSHA Region 9
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Volume:
  9
• Issue:
  2
• NIOSHTIC Number:
  nn:20040234
• Citation:
  J Occup Environ Hyg 2012 Feb; 9(2):D35-D41
• Contact Point Address:
  Michael Cooper, The Lippy Group, LLC, 1380 Grizzly Peak Blvd., Berkeley, CA 94708
• Email:
  mike@thelippygroup.com
• CAS Registry Number:
  Quartz (SiO2) (CAS RN 14808-60-7) ; Silica (CAS RN 7631-86-9)
• Federal Fiscal Year:
  2012
• NORA Priority Area:
  Construction
• Performing Organization:
  CPWR-The Center for Construction Research and Training, Silver Spring, Maryland
• Peer Reviewed:
  True
• Start Date:
  20040801
• Source Full Name:
  Journal of Occupational and Environmental Hygiene
• End Date:
  20090630
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:1b140226aa0f84a2f497ba08796cd944ec18007c6dfbbaa7c3764ebc9026d4204c5c6be04ed13ede5c6d3e511c4c04c3394dab1fd80ea0bb27554e5358aa7eb9
• Download URL:
  https://stacks.cdc.gov/view/cdc/193176/cdc_193176_DS1.pdf
• File Type:
  [PDF - 487.90 KB ]