Journal of radiological science and technology (대한방사선기술학회지:방사선기술과학)

Korean Society of Radiological Science (대한방사선과학회)
권호 표지
DOI QR코드

DOI QR Code

Assesment of Indoor Radon Gas Concentration Change of College

대학의 실내 라돈가스 농도의 변화 평가

  • Park, Hoon-Hee (Department of Radiological Technology, Shingu College) ;
  • Jeong, Euihwan (Department of Radiological Technology, Shingu College) ;
  • Kim, Hak-Jae (Department of Radiological Technology, Shingu College) ;
  • Lee, Juyoung (Department of Radiological Technology, Songho College) ;
  • Lyu, Kwang Yeul (Department of Radiological Technology, Shingu College)
  • Received : 2017.02.21
  • Accepted : 2017.03.25
  • Published : 2017.03.31
Download PDF
⟨ Previous Next ⟩

Abstract

The purpose of this study was to assess the impact by comparing the concentration of indoor radon and look for ways to lower the concentration of indoor radon gas measurements of three variables, the year of completion, volume of the building and ventilation. Measurement target is six classrooms on the sixth floor of building that was constructed in 1973 and was extended in 2011. Selected classroom's volume is different. Four classrooms were selected to compare the radon concentration in accordance with the year of completion, Classrooms that is same year of completion were selected to compare the radon concentration in accordance with the volume, six classroom was performed closure and ventilation to compare radon concentration according to ventilation. Radon concentrations in accordance with the year of building completion showed a high concentration of radon in a building recently built. Also, Radon concentration in volume is high the smaller the volume. Radon concentration change according to ventilation showed a reduction of about 80% when the ventilation than during closing. Especially, The radon concentrations were high detected while the recently year of building completion and the smaller volume. Ventilation of the three variables is considered that can be expected to exposure reduction effect by radon affecting the greatest radon concentration reduction.

본 연구는 실내 라돈 가스의 농도를 낮추기 위한 방법을 찾기 위해 건물의 준공연도, 건물의 용적, 환기 세 가지 변수에 따른 실내 라돈 농도를 비교, 측정하여 그 영향을 알아보고자 한다. 측정은 1973년에 건축이 되었고, 2011년에 증축이 된 건물의 6층을 대상으로 용적이 서로 다르고 준공연도가 1973년과 2011년인 6개의 강의실을 측정하였다. 준공연도에 따른 라돈농도를 비교하기 위해 4개의 강의실을 선정하였고, 용적에 따른 라돈농도를 비교하기 위해 준공연도가 같고 용적이 다른 강의실을 선정하였고, 환기에 따른 라돈농도를 비교하기 위해 6개의 강의실의 폐쇄와 환기를 시행하였다. 결과적으로 준공연도에 따른 라돈농도는 최근에 지어진 건물에서 라돈농도가 최대 4배 높게 나타났으며, 용적에 따른 라돈농도는 용적이 작을수록 높게 나타났다. 환기에 따른 라돈농도의 변화는 폐쇄 시보다 환기를 할 경우 약 80%의 감소율을 보였다. 특히, 준공연도가 최근이면서 용적이 작을수록 라돈농도가 높게 검출되었고, 세 가지 변수 중 환기가 라돈농도 감소에 가장 큰 영향을 끼쳐 라돈에 의한 피폭감소 효과를 기대할 수 있을 것으로 사료된다.

Keywords

References

  1. Dae-Hwan Kim, Indoor Radon Emission and Reduction Measures by Ventilation, Graduate School Ulsan University, 1-49, 2014
  2. Philip K. Hopke, Radon and It's Decay Products, ACS Symposium Series;American Chemical Society, 0331, 512-586, 1987
  3. In Cheol Im, Radon concentration measurement at general house in Pusan area, The journal of Korean Society of Radiological Science Vol. 27, No. 2, 29-33, 2004
  4. Seok won Cho, Hoon-Hee Park, Jung yul Kim et al. A study to Decrease Exposure Dose for the Radiotechnologist in PET/CT, The Korean Journal of Nuclear Medicine Technology, Vol. 14, No. 2, 159-165, 2010
  5. United Nations Scientific Committee on Effects of Atomic Radiation, Source Effects and Risks of Ionizing Radiation, Report to the General Assembly with Annexes, 1988
  6. Choi Im-Jo, Concentration Distribution and Characteristic of Radon for Public Facilities in Daegu Area, Graduate School of GyeongBuk University, 1-53, 2008
  7. Jee-woong Ryu, A study on the Measurement and Evaluation of IAQ in School Classroom, Graduate School of Chungju National University, 1-76, 2008
  8. Sung-a Kang, A Study on the Correlation between the Volume of Indoor Space and the Measured Concentration of Indoor Radon, Graduate School Chonbuk National University, 1-78, 2007
  9. ICRP, Recommendations of the International Commission on Radiological Protection, ICRP publication 103, United Kingdom
  10. Jeaho Song, Gyehwan Jin, Evaluation of Indoor Radon Levels in a Hospital Underground Space and Internal Exposure, The journal of Korean Society of Radiology Vol. 5, No. 5, 231-235, 2011 https://doi.org/10.7742/jksr.2011.5.5.231
  11. Young-Sik Kim, The Study of Radon Concentration According to Building of Stars, The journal of Korean Society of Environmental Health Vol. 31, No. 1, 94-98, 2004
  12. Su Jin Oh, A Study of Indoor Radon Concentration at Elementary Schools, House and Offices in Chungchungnamdo, Graduate School of Soonchunhyang University, 1-63, 2014
  13. Hoon Chae Park, Hang Seok Choi, Seung Yeon Cho et al. Numerical Study on Indoor Dispersion of Radon Emitted from Building Materials, The journal of KSEE Vol. 36, No. 5, 325-332, 2014
  14. Jae Hyung Jung, Time and spatial distribution characteristics between Radon-222 and its daughters Concentrations and Correlations Analysis, Graduate School of Energy and Environment, Seoul National University of Technology, 1-78, 2009
  15. Dong-Myung Lee, Chang-Kyu Kim, Byung-Hwan Rho et al. Diurnal and Seasonal Variations of the Radon Progeny Concentrations in the open Atmosphere and the Influence of Meteorological Parameters, The journal of Korean Association Radiation Protection, Vol. 25, No. 4, 207-216, 2000