한국대기환경학회지 (Journal of Korean Society for Atmospheric Environment)

  • 제28권4호
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  • Pages.374-383
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  • 2012
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  • 1598-7132(pISSN)
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  • 2383-5346(eISSN)
한국대기환경학회 (Korean Society for Atmospheric Environment)
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수도권 지하철 전동차에서의 라돈 농도 분포 조사

Indoor Radon Levels in the Subway Cabins of the Seoul Metropolitan Area

  • 전재식 (서울특별시보건환경연구원) ;
  • 서종원 (신흥대학교 보건위생과) ;
  • 전명진 (서울특별시보건환경연구원) ;
  • 엄석원 (서울특별시보건환경연구원) ;
  • 채영주 (서울특별시보건환경연구원)
  • Jeon, Jae-Sik (Seoul Metropolitan Government Research Institute of Public Health and Environment) ;
  • Seo, Jong-Won (Department of Public Health Hygiene, Shinheung College) ;
  • Jeon, Myung-Jin (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)
  • 투고 : 2012.03.02
  • 심사 : 2012.07.19
  • 발행 : 2012.08.31
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초록

In this study, we have observed the airborne radon levels in the subway cabins before and after platform screen doors (PSD) installation. The measurements have been conducted at Seoul metropolitan subway lines in 2008, 2009 and 2010. The mean concentration of the radon inside subway cabins were increased by approximately 53% from $20.1Bq/m^3$ to $30.8Bq/m^3$ by installing PSD. After PSD installation, measured values for the different lines were rather different, and varied between 8.2 and $76.5Bq/m^3$. And mean radon concentrations were in the decreasing order for subway lines 5, 6, 7, 8, 3, 4, 2, 9 and 1. It was also found that the indoor radon concentrations in the subway cabins were highly dependent on the management approach of a ventilation system at the subway stations. By assuming an average of $720\;h\;year^{-1}$ and $2,880\;h\;year^{-1}$ spent in subway cabin, effective doses to passengers and employee were estimated. The expected annual effective dose, in case of an equilibrium factor of 0.4, were $0.07mSv\;y^{-1}$ and $0.26mSv\;y^{-1}$, respectively.

키워드

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