An air-supplied respirator for underground coal miners.

Details

• Personal Author:
  Crooks TP ; De Cola CR ; Stawitcke FA ; Tobey S
• Description:
  A new type air-supplied respirator for use by underground coal miners intended to improve wearer acceptance was developed. The respirator system employs a machine-mounted hydraulic powered air compressor and filter system. Maintenance requirements were reduced to a minimum through the use of cyclone (centrifugal separator) prefilters. A new facepiece design was also developed to achieve increased acceptance by the user. It incorporates a pair of miniature, high performance, low inhalation resistance demand regulators, mounted directly on the facepiece to reduce breathing effort. A small continuous air flow is provided to reduce thermal burden and required seal pressures. A special consideration was given to the harsh requirements imposed on powered respirator systems by the underground coal mine environment. Both manned and unmanned tests of system performance and acceptability in simulated mine environments were conducted.
• Subjects:
  Accidents, Occupational Insecticides Occupational Health Organophosphates Radiation Dosimeters Risk Assessment Safety
• Keywords:
  Air-flow Coal-miners Coal-mining Respirators Respiratory-equipment
• Publisher:
  National Institute for Occupational Safety and Health
• Document Type:
  Text
• Funding:
  Contract
• Genre:
  Final Contract Report
• Place as Subject:
  California ; OSHA Region 3 ; OSHA Region 9 ; West Virginia
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  ALFORD - Appalachian Laboratory for Occupational Respiratory Disease
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  1-194
• NIOSHTIC Number:
  nn:20000662
• Citation:
  Morgantown, WV: U.S. Department of Health, Education, and Welfare, Public Health Service, Health Services and Mental Health Administration, National Institute for Occupational Safety and Health, TR-047-73, 1973 Jun; :1-194
• Federal Fiscal Year:
  1973
• NORA Priority Area:
  Respirators
• Performing Organization:
  Synsis Inc., Los Angeles, CA
• 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-512:219b2ea2e4f8b5bf26d6ca82b9bfd8ff6fbc6bfb08dbea6ad282501bfe0bafda28f7b41341a608655f303de677e8458f8e1b41c5ae2a0968b05ec8f934065d3a
• Download URL:
  https://stacks.cdc.gov/view/cdc/181039/cdc_181039_DS1.pdf
• File Type:
  [PDF - 7.99 MB ]