Journal of Radiation Protection and Research

The Korean Association for Radiation Protection (대한방사선방어학회)
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Study on the Assessment of Dose Equivalent due to the Inhalation of $^{222}Rn$ and Its Daughters in Indoor Air

실내 $^{222}Rn$과 $^{222}Rn$ 딸핵종에 의한 피폭선량 해석연구

  • Jun, Jae-Shik (Department of Physics, Chungnam National University) ;
  • Chai, Ha-Seok (Department of Physics, Chungnam National University) ;
  • Yi, Chul-Young (Department of Physics, Chungnam National University) ;
  • Cho, Hyuck (Department of Physics, Chungnam National University) ;
  • Ha, Chung-Woo (Korea Institute of Nuclear Safety)
  • 전재식 (충남대학교 물리학과) ;
  • 채하석 (충남대학교 물리학과) ;
  • 이철영 (충남대학교 물리학과) ;
  • 조혁 (충남대학교 물리학과) ;
  • 하정우 (한국원자력안전기술원)
  • Published : 1995.03.30
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Abstract

Assesment of dose equivalent given by inhaled $^{222}Rn$ and its progeny has been carried out based on the concentrations of $^{222}Rn$ and its daughters in indoor air, and equilibrium factor between them measured by charcoal canister method and alpha spectrometry. Assuming the occupancy factor to be 0.8, and breathing rate to be $0.75m^3\;h^{-1}$ for public and $1.2m^3\;h^{-1}$ for occupational exposure, respectively, the regional lung dose 대valent and the resulting annual effective dose equivalent due to the inhalation of $^{222}Rn$ and its daughters in indoor air were evaluated by use of three different lung models, namely, Jacobi-Eisfeld, James-Birchall and ICRP model.

활성탄 캐니스터법과 알파분광분석 법을 이용하여 실내 공기중의 $^{222}Rn$ 및 그 딸핵종의 농도와 $^{222}Rn$과 그 딸핵종 사이의 평형인자를 동시에 측정하였다. 실내 체재율을 0.8, 일반인과 작업종사자의 호흡율을 각각 $0.75m^3\;h^{-1}$와 $1.2m^3\;h^{-1}$로 가정하고, 실내 공기중의 $^{222}Rn$과 그 딸핵종의 흡입에 의한 부위별 폐선량을 세가지 모형 즉, Jacobi-Eisfeld, James-Birchall 및 ICRP 모형으로 평가하고 연간총유효선량을 평가하였다.

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