Proposal and practicality of an alternative blue-light hazard risk assessment method for high-intensity white-light sources at workplaces.

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  • Additional Information
    • Source:
      Publisher: Taylor & Francis Country of Publication: England NLM ID: 9507598 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 2376-9130 (Electronic) Linking ISSN: 10803548 NLM ISO Abbreviation: Int J Occup Saf Ergon Subsets: MEDLINE
    • Publication Information:
      Publication: 2015- : Abingdon, UK : Taylor & Francis
      Original Publication: Norwood, N.J. : Ablex Pub. Co., c1995-
    • Subject Terms:
      Occupational Exposure*/analysis ; Light* ; Workplace* ; Lighting*; Risk Assessment/methods ; Humans
    • Abstract:
      Objectives . It is prescribed to determine blue-light hazard (BLH) weighted radiances, L B , for an assessment of spotlights with an angular subtense α ≥ 11 mrad . The BLH weighted irradiance, E B , can be used alternatively for smaller sources. Appropriate instruments are not common among persons commissioned with risk assessment (RA), and especially L B measurements may be challenging. Therefore, a practical BLH RA approach is proposed that is based on illuminance, E v , pre-calculated blackbody BLH efficacies of luminous radiation, K B,v Planck , and solid angle considerations. Methods . The practicality of this method was examined and compared against other RA approaches. Results . To ensure comparability of the applied instruments, measurements were performed close to a radiance standard, showing deviations within the lamp's expanded uncertainties ( < 4 % ), whereas the deviations were ± 15 % for longer distances. Focusing on a complex light-emitting diode (LED) spotlight, all detected values could be converted to L B by means of the RA methods within ± 20 % . Two field tests with several spotlights yielded maximum permissible exposure durations (MPED) obtained from the different RA approaches that agreed among each other within uncertainties largely below ± 30 % . Conclusion . The general practicality of the proposed E v method can be concluded for a workplace BLH RA of white-light sources.
    • Contributed Indexing:
      Keywords: blue-light hazard; blue-light hazard efficacy of luminous radiation; instrument comparison; occupational safety and health; risk assessment; spotlight; workplace
    • Publication Date:
      Date Created: 20240220 Date Completed: 20240507 Latest Revision: 20240507
    • Publication Date:
      20240507
    • Accession Number:
      10.1080/10803548.2024.2317050
    • Accession Number:
      38378446