Journal of Environmental Impact Assessment (환경영향평가)

Korean Society of Environmental Impact Assessment (한국환경영향평가학회)
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A Study on the Distribution and Reduction Method of Indoor Radon Concentration in Daejeon Metropolitan City

대전광역시 주택 실내 라돈 농도 분포와 저감 공법 적용 연구

  • Jang, Yong-Chul (Department of Environmental Science and Engineering, Chungnam National University) ;
  • Yang, Jae Hwan (Department of Environmental Science and Engineering, Chungnam National University) ;
  • Kim, Hongkyoung (Department of Environmental Science and Engineering, Chungnam National University) ;
  • Lee, Gain (Department of Environmental Science and Engineering, Chungnam National University) ;
  • Song, Hakyun (Department of Environmental Science and Engineering, Chungnam National University) ;
  • Kim, Byeonghwan (Department of Environmental Science and Engineering, Chungnam National University) ;
  • Kwon, Youngsun (Department of Environmental Science and Engineering, Chungnam National University)
  • Received : 2022.06.07
  • Accepted : 2022.08.22
  • Published : 2022.10.31
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Abstract

In this study, the concentration distribution of indoor radon in Daejeon Metropolitan City was investigated and the reduction efficiency was evaluated by applying the radon reduction methods. Based on the results of the National Institute of Environmental Research, indoor radon measurements were conducted on 24 selected houses, and the average value of District A was 261 Bq/m3, far exceeding the standard, and even in the same house, indoor radon concentration was affected by measurement point and time. In the case of eight houses that applied the soil venting method to reduce radon, the indoorradon level was significantly lowerthan the standard value, and the average reduction efficiency was also around 55%, indicating a good reduction effect. In addition, the average reduction efficiency was around 90% in the two houses that carried out the shielding method, showing the very excellent effect of the indoorradon reduction. Even if the same reduction method is applied when reducing radon, the reduction efficiency may vary depending on various factors such as the structure of the building, the frequency of ventilation, and the season, so it is necessary to accurately evaluate the effectiveness of the reduction method in the future. Based on this, it is necessary to establish indoor radon management measures in Daejeon Metropolitan City to reduce human harm caused by radon exposure.

본 연구에서는 대전광역시 실내 라돈의 농도 분포를 조사하고 라돈 저감 공법을 적용하여 저감 효율을 평가하였다. 전국주택라돈조사 결과를 기초로 선별된 24개 주택을 대상으로 실내 라돈 측정을 실시한 결과, A자치구의 평균치가 261 Bq/m3로서 기준치를 크게 상회하는 수준임을 알 수 있었고, 동일한 주택에서도 실내 라돈 농도는 측정 지점과 시간에 따라 영향을 받고 있음을 확인하였다. 라돈 저감을 위해 토양 배기법을 적용한 8개 주택의 경우, 실내 라돈 수치는 기준치에 비해 크게 낮아졌으며 평균 저감 효율 역시 55% 정도로 나타나 양호한 라돈 저감 효과를 알 수 있었다. 또한 차폐법을 실시한 2개의 주택에서는 평균 저감 효율이 90% 정도로서 실내 라돈 저감 효과가 매우 우수하였다. 라돈 저감 시 동일한 저감공법을 적용하여도 건물의 구조, 환기의 빈도, 계절 등 여러 요인에 따라 저감 효율이 달라질 수 있으므로 향후 다양한 인자를 반영하여 저감공법의 효과를 정밀하게 평가할 필요가 있다. 이를 기초로 하여 라돈 노출에 의한 인체 위해 저감을 위한 대전광역시 실내 라돈 관리 대책 마련이 필요하다.

Keywords

References

  1. ARPANSA (Australian Radiation Protection and Nuclear Safety Agency). 2017. Current Radiation Protection Requirements for Radon in Australia.
  2. ASN_NRPA (French Nuclear Safety Authority (ASN), Norwegian Radiation Protection Authority (NRPA)). 2015. Radon National Action Plan.
  3. Chung EK. 2019. Characteristics of Internal and External Exposure of Radon and Thoron in Process Handling Monazite. Journal of Korean Society of Occupational and Environmental Hygiene 29(2): 167-175. [Korean Literature] https://doi.org/10.15269/JKSOEH.2019.29.2.167
  4. Dillon ME, Carter GL, Arra R, Kahn B. 1997. Radon concentrations in groundwater of Georgia piedmont. Health Physics 60(2): 229-236.
  5. Institute of Geoscience and Mineral Resources. 2019. 1:1,000,000 geologic sheet of Korea.
  6. International Agency for Research on Cancer. 1988. Man-made mineral fibres and radon. IARC Monographs on the evaluation of carcinogenic risks to humans. Vol. 43, Lyon.
  7. Jung JS, Yoo JH, Lee KS, Lee JW, Shim IK, Seo SY, Kim BW, Kwon MH. 2016. Study on Characteristics of Radon Concentration and Effective Dose at Public Buildings in Korea. The Korean Society of Living Environmental System 23(6): 767-775. [Korean Literature] https://doi.org/10.21086/ksles.2016.12.23.6.767
  8. Korea Institute of Geological Resources. Geological Information Service System, from: https://mgeo.kigam.re.kr/ (accessed date Nov. 19, 2021).
  9. Kim YJ, Chang BU, Park HM, Kim CK, Tokonami S. 2011. National radon survey in Korea. Radiation Protection Dosimetry 146(1-3): 6-10. [Korean Literature] https://doi.org/10.1093/rpd/ncr094
  10. Lee KS, Seo SY, Yoo JH, Oh SJ, Kwon MH, Lee WS. 2016. Factors influencing indoor radon concentration in detached houses. Journal of Odor Indoor Environment. 15(2): 93-99. [Korean Literature] https://doi.org/10.15250/joie.2016.15.2.93
  11. Lee SM. 2018. A legal problem and an improvement plan of NORM management system seen through case of a radon detection bed. Environ. Law Policy 21: 167-199. [Korean Literature] https://doi.org/10.18215/elvlp.21..201809.167
  12. Lee JS. 2019. Legal Improvement Plan for Radon Reduction in Public-Use Facilities, Hannam Journal of Law & Technology 25(3): 151-192. [Korean Literature] https://doi.org/10.32430/ilst.2019.25.3.151
  13. Ministry of Environment, Yonsei University. 2010. Establishment of Radon High Exposure Path Management System. [Korean Literature]
  14. Ministry of Environment. 2016. Understanding of Radon, Natural Radioactive Substance in Life. [Korean Literature]
  15. Ministry of Environment of the Republic of Korea. 2020. 4th Basic Plan for Indoor Air Quality Management. [Korean Literature]
  16. Ministry of Environment. 2016. indoor air quality management law. [Korean Literature]
  17. Ministry of Environment. 2020. National indoor radon map, available from: https://iaqinfo.nier.go.kr/leinfo/radon_map.do (accessed date: Nov. 19, 2021).
  18. National Institute of Environmental Research. 2010. Nationwide Survey of Indoor Radon In Korea- Public facilities. [Korean Literature]
  19. National Institute of Environmental Research. 2018. Nationwide survey (2017-2018) of indoor radon at home in Korea. [Korean Literature]
  20. State Office For Nuclear Safety Prague. 2019. National Action Plan For Control of Public Exposure To Radon.
  21. US EPA (United States Environmental Protection Agency). 2015-2020. "Reflections on the National Radon Action Plan's (NRAP) Progress" from The National Radon Action Plan: A Strategy for Saving Lives (pdf) (November 10, 2015, EPA 402/R-15/001)
  22. US EPA (United States Environmental Protection Agency). 2011. Protecting People and Families from Radon A Federal Action Plan for Saving Lives.
  23. US EPA (United States Environmental Protection Agency). 2016. Basic radon facts.
  24. US EPA (United States Environmental Protection Agency). 2016 Citizen's Guide to Radon.
  25. WHO (World Health Organization). 2009. Handbook on Indoor Radon: a public health perspective. WHO: Geneva; pp. 3-16.
  26. WHO (World Health Organization). 2000. Air quality guidelines for europe second edition.