Fundamental Factors Affecting Upper-Room Ultraviolet Germicidal Irradiation – Part I. Experimental

Details

• Personal Author:
  Banahan KF ; Brickner PW ; First M ; Rudnick SN ; Vincent RL
• Description:
  The objective of this research was to study the factors that relate to the effectiveness of upper-room ultraviolet germicidal irradiation for inactivating airborne microorganisms. The work was conducted in a room-sized chamber designed and furnished for investigations of this nature. Nebulized Serratia marcescens, Bacillus subtilis spores, and vaccinia virus were used as test aerosols. Most data were collected from steady-state experiments comparing the number of viable organisms in the chamber air remaining with UV lamps turned on to the number with UV lamps turned off, but some decay experiments were conducted to compare the two methods. UV power level had a strong influence but was fully effective only in the presence of air mixing that produced vigorous vertical air currents. A conclusion of the study is that an upper-room ultraviolet installation is a complex system that requires careful integration of UV luminaires, UV power, and room ventilation arrangements. Description provided by NIOSH
• Subjects:
  • Aerosols
  • Air Pollutants, Occupational
  • Disinfectants
  • Environmental Exposure
  • Microbiology
  • Occupational Health
  • Particulate Matter
  • Safety
  • Ventilation
• Keywords:
  • Ultraviolet radiation
  • Germicides
  • Airborne particulates
  • Microorganisms
  • Aerosols
  • Ventilation
  • Microbiology
  • Pathogenicity
  • Radiation effects
  • Disinfectants
  More +
• ISSN:
  1545-9624
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Journal Article
• Place as Subject:
  Massachusetts ; New York ; OSHA Region 1 ; OSHA Region 2
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  321-331
• Volume:
  4
• Issue:
  5
• NIOSHTIC Number:
  nn:20054372
• Citation:
  J Occup Environ Hyg 2007 May; 4(5):321-331
• Contact Point Address:
  Stephen N. Rudnick, Harvard School of Public Health, Department of Environmental Health, 665 Huntington Ave., Room 1-B21, Boston, MA 02115
• Email:
  srudnick@hsph.harvard.edu
• Federal Fiscal Year:
  2007
• Performing Organization:
  Harvard School of Public Health
• Peer Reviewed:
  True
• Start Date:
  20050701
• Source Full Name:
  Journal of Occupational and Environmental Hygiene
• End Date:
  20280630
• Download URL:
  https://stacks.cdc.gov/view/cdc/216957/cdc_216957_DS1.pdf
• File Type:
  [PDF - 870.50 KB]
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:773d42b5154178ffe7c9ca79c19b8eb89e06241a30c4cf2fb6c5ede8dfd0d10e5a5708e81936d2024f60aff71717c2f0c5e757fe8fc7bf114023349dbb611d50