Improving the Performance of Fan-Powered Dust Collectors in Stone-Cutting Applications

Details

• Personal Author:
  Cecala, Andrew B. ; Chekan, Gregory J. ; Pollock, Douglas E. ; Zimmer, Jeanne A.
• Description:
  In the dimension stone industry, workers in processing shops may be exposed to harmful levels of respirable silica dust when conducting the different tasks in stone preparation, which include cutting, grinding, polishing, and thermaling. To protect workers from this health hazard, operators sometimes ventilate processing shops using fan-powered dust collectors to capture and filter dust. To investigate this issue, NIOSH, Pittsburgh Research Laboratory, in cooperation with a dimension stone operation, upgraded an off-the-shelf dust collector the operator was utilizing in a polishing/cutting shop. Initial dust surveys showed that the unit was under-designed for the amount of dust being generated in the shop. The objective of the research was to cost-effectively increase the air cleaning volume and improve dust capture efficiency of the unit with a larger motor and blower. The unit's original stock 0.56 kw motor and blower was replaced with a 2.24 kw motor and matching blower to increase airflow. The unit was evaluated both in the laboratory and the shop before and after the retrofit to determine the improvement of the upgrade. The study showed that the 2.24 kw upgrade improved the performance over the original 0.56 kw motor resulting in more dust being cleaned from the ambient air in the shop. The 2.24 kw unit cleaned 19% more air and captured 32% more respirable dust than the 0.56 kw unit. PowerPoint and MP3 files are available. [Description provided by NIOSH]
• Subjects:
  Dust Mining Occupational Health Safety
• Keywords:
  Mining-industry; Underground-mining; Particulate-dust; Dust-particles; Aerosol-particles; Airborne-particles; Silicosis; Silica-dusts; Ventilation-systems; Air-quality-control; Stone-mines
• Series:
  Mining Publications
• ISBN:
  9780615200095
• Publisher:
  University of Nevada - Reno
• Document Type:
  Text
• Genre:
  Proceedings
• Place as Subject:
  Nevada ; OSHA Region 3 ; OSHA Region 9 ; Pennsylvania
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  PRL - Pittsburgh Research Laboratory
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  8 pdf pages
• NIOSHTIC Number:
  nn:20034167
• Citation:
  Proceedings of the 12th U.S./North American Mine Ventilation Symposium, Reno, Nevada, June 9-11, 2008. Wallace KG Jr., ed., Reno, NV: University of Nevada - Reno, 2008 Jun; :367-373
• CAS Registry Number:
  Quartz (SiO2) (CAS RN 14808-60-7)
• Editor(s):
  Wallace, K. G. Jr.
• Federal Fiscal Year:
  2008
• NORA Priority Area:
  Mining
• Peer Reviewed:
  False
• Source Full Name:
  Proceedings of the 12th U.S./North American Mine Ventilation Symposium, Reno, Nevada, June 9-11, 2008
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:2926ff4fa438cc4a928d210506f8a6ddda82a377b70b3a2550ef58cf0bf7b8ee960b4190ca57d16164b80ef274629b11b6d5f7108c38aa10ddd3d5c9e53e3644
• Download URL:
  https://stacks.cdc.gov/view/cdc/236353/cdc_236353_DS1.pdf
• File Type:
  [PDF - 648.26 KB ]