Journal of Korean Society for Atmospheric Environment (한국대기환경학회지)

Korean Society for Atmospheric Environment (한국대기환경학회)
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A Noticeable Change in Indoor Radon Levels After Platform Screen Doors Installation in Seoul Subway Station

스크린도어 설치 후 서울지하철역 라돈 농도의 변화 특성

  • Jeon, Jae-Sik (Seoul Metropolitan Government Research Institute of Public Health and Environment) ;
  • Yoon, Jong-Cheol (Seoul Metropolitan Government Research Institute of Public Health and Environment) ;
  • Lee, Ho-Chan (Seoul Metropolitan Government Research Institute of Public Health and Environment) ;
  • Eom, Seok-Won (Seoul Metropolitan Government Research Institute of Public Health and Environment) ;
  • Chae, Young-Zoo (Seoul Metropolitan Government Research Institute of Public Health and Environment)
  • 전재식 (서울특별시보건환경연구원) ;
  • 윤종철 (서울특별시보건환경연구원) ;
  • 이호찬 (서울특별시보건환경연구원) ;
  • 엄석원 (서울특별시보건환경연구원) ;
  • 채영주 (서울특별시보건환경연구원)
  • Received : 2011.10.07
  • Accepted : 2012.01.30
  • Published : 2012.02.29
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Abstract

Platform screen doors (PSD) installed at 289 stations in Seoul metropolitan subway from November 2005 to December 2009, are expected to prevent death from a fall and improve air quality. In this study, we systematically surveyed changes in radon concentrations before and after PSD installation in Seoul metropolitan subway stations. By solid-state nuclear track detectors (SSNTD), the radon concentrations before and after the PSD installation were measured at 54 stations of 6 lines from 2 to 7 reported to have relatively high radon concentrations. Mean radon concentrations at platforms were decreased by approximately 56% from 121.7 Bq/$m^3$ to 54.0 Bq/$m^3$. Before PSD installation, mean radon concentrations were in the decreasing order for subway lines 7, 5, 6, 3, 4 and 2. On the other hand, after PSD installation the order was changed to 5, 6, 7, 3, 4 and 2. According to a radon map of Seoul metropolitan subway, the number of platforms where radon concentration over was 74 Bq/$m^3$ decreased from 38 to 12 after PSD installation.

Keywords

References

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