NIOSH Hazard Controls HC23 – Controlling Silica Dust from Foundry Casting-Cleaning Operations

Details

• Corporate Authors:
  National Institute for Occupational Safety and Health
• Description:
  The control of silica dust (14808607) generated from the cleaning of foundry castings was reviewed. Foundry workers who cleaned small castings produced from sand molds with handheld chipping and grinding tools were exposed to respirable silica dust. Such chronic exposures could result in silicosis. A specially designed local exhaust ventilation (LEV) system was essential for the effective control of silica dust exposure. The LEV system was composed of a downdraft ventilation booth equipped with a turntable for easy and safe handling of castings. The system worked by enclosing and pulling air contaminants downward through a large grate opening on the surface of the work table. Air flowed through the system at a rate of 5,600 cubic feet per minute, a rate well in excess of the recommended face capture velocity of 200 feet per minute. This LEV system was shown to reduce workers' exposure to respirable silica dust by 59 to 77%. [Description provided by NIOSH]
• Subjects:
  Air Pollutants, Occupational Dust Metal Workers Occupational Exposure Occupational Health Particulate Matter Respiratory System Respiratory Tract Diseases Safety Silicon Dioxide Ventilation

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• Keywords:
  Airborne-dusts Dust-control Dust-control-equipment Dust-exposure Exhaust-ventilation Foundry-workers Occupational-exposure Occupational-respiratory-disease Respirable-dust Silica-dusts Ventilation-systems

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• Series:
  NIOSH Numbered Publications
• Subseries:
  Hazard Control
• DOI:
  https://doi.org/10.26616/NIOSHPUB98106
• Publisher:
  National Institute for Occupational Safety and Health
• Document Type:
  Text
• Genre:
  Field Study
• Place as Subject:
  Ohio ; OSHA Region 5
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  EID - Education and Information Division ; DPSE - Division of Physical Sciences and Engineering
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  1-2
• NIOSHTIC Number:
  nn:00241561
• 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, DHHS (NIOSH) Publication No. 98-106, (HC 23), 1997 Dec; :1-2
• CAS Registry Number:
  Quartz (SiO2) (CAS RN 14808-60-7)
• Federal Fiscal Year:
  1998
• Peer Reviewed:
  False
• Source Full Name:
  National Institute for Occupational Safety and Health
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:360584764eaa6de769277f74fa18e4b233ac615100af1c184ee7033b0538c49e202d0d65089171dddb1c3b48812163f1f411bd22cc39c4c0c2999f1a2baadffe
• Download URL:
  https://stacks.cdc.gov/view/cdc/209733/cdc_209733_DS1.pdf
• File Type:
  [PDF - 79.80 KB ]