Respirator Performance Model for Particulates

Details

• Personal Author:
  Hinds WC
• Description:
  The effect of particle size distribution on the performance of representative single use, half mask, and full face respirators was investigated. An experimental set up was developed to measure respirator and leak penetration as a function of particle size and flow rate through the respirator. Detailed studies were performed of respirator filter performance. Measurements were made of particles penetrating the facial seal leaks. A predictive model was developed using these data which can be used to determine the performance of half mask respirators for protection against aerosols. An evaluation was performed of the leakage of normal and impaired exhalation valves during inhalation. Model validation measurements were performed for respirator filters as they became filled with dust. The penetration characteristics of facial seal leaks for full face masks were evaluated. The authors conclude that it is possible to model the performance of respirators with enough precision to provide useful insight into the protection being offered by half mask respirators. Dust accumulating on the respirator increases the resistance of air flow through the filters and increases the collection efficiency of the filters. Respirator filter performance varied significantly between types and between brands within a type. [Description provided by NIOSH]
• Subjects:
  Occupational Health Personal Protective Equipment Respiratory Protective Devices Safety
• Keywords:
  Equipment-reliability Face-masks NIOSH-Grant Personal-protective-equipment Respirators Respiratory-protection
• Series:
  Grant Final Reports
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Final Grant Report
• Place as Subject:
  California ; OSHA Region 9
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  OEP - Office of Extramural Programs
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  1-12
• NIOSHTIC Number:
  nn:00214125
• NTIS Accession Number:
  PB93-214260
• Citation:
  Department of Environmental Health Sciences, Center for Occupational and Environmental Health, UCLA School of Public Health, Los Angeles, California 1992 Nov; :1-12
• Contact Point Address:
  Environ and Nutritional Scis University of California 405 Hilgard Avenue Los Angeles, Calif 90024
• Federal Fiscal Year:
  1993
• Performing Organization:
  University of California Los Angeles, Los Angeles, California
• Peer Reviewed:
  False
• Start Date:
  19830923
• Source Full Name:
  Department of Environmental Health Sciences, Center for Occupational and Environmental Health, UCLA School of Public Health, Los Angeles, California
• End Date:
  19920831
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:9bdf153564a553bcd45cfdca3214f13708923745498b0ff682e50a5069cafb1f6bf934f8ec552c179ae6f3f9eba2ac619f3857b3eeb6c3939c4a1a98005240e4
• Download URL:
  https://stacks.cdc.gov/view/cdc/217830/cdc_217830_DS1.pdf
• File Type:
  [PDF - 401.80 KB ]