Journal of the Korean Society of Radiology (한국방사선학회논문지)

The Korean Society of Radiology (한국방사선학회)
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Study on Influence Analysis of Radioactive Terror Scenarios by Weather Conditions

기상조건에 따른 방사능테러 시나리오 영향 분석

  • Kim, Tae Woo (Department of Radiological Science, Catholic University of Daegu) ;
  • Jeon, Yeo Ryeong (Department of Radiological Science, Catholic University of Daegu) ;
  • Chang, Sunyoung (Center for Nuclear Strategy and Policy, Korea Institute of Nuclear Nonproliferation and Control) ;
  • Kim, Yongmin (Department of Radiological Science, Catholic University of Daegu)
  • 김태우 (대구가톨릭대학교 방사선학과) ;
  • 전여령 (대구가톨릭대학교 방사선학과) ;
  • 장선영 (한국원자력통제기술원 정책연구센터) ;
  • 김용민 (대구가톨릭대학교 방사선학과)
  • Received : 2018.10.11
  • Accepted : 2018.11.30
  • Published : 2018.11.30
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Abstract

After 9/11 attacks in the U.S, Terrorism has increased the number of unspecified casualties through multi-use facility terror attacks compared to the past. The subsequent London bombings and the self-destruction of Pakistan increased people's fear and social anxiety. As international events have been held in Korea recently, awareness and concern over radioactive terrorism and security management of radioactive materials are increasing. In this paper, we compared the results of different meteorological conditions using HotSpot Code. After creating a possible terror scenario in Korea, sources likely to be use in RDD and Dirty bomb were investigated. The meteorological condition was selected by comparing the Pasquill-Gifford stability class with the most stable condition F and the most unstable condition A. The result value of the A and F condition through simulation were shown not to cause citizens to die from acute effects due to radiological effects. The range of radioactivity is different according to the wind speed and the meteorological stability, and the degree of radioactivity dilution is different according to meteorological conditions. Analysis results are expected to be used for initial response in the event of a radioactive terrorist attack.

미국 9.11 사고 이후 테러는 과거에 비하여 다중이용시설 공격을 통한 불특정 다수의 공격이 증가하고 있다. 연이은 런던 폭탄테러, 파키스탄의 자폭 등은 사람들의 공포심 및 사회적 불안감을 증가시켰다. 최근 국내에서 다양한 국제행사가 개최되고 있어, 방사능테러 위협에 대비한 방사성물질의 국가 안보 의식이 증대되고 있다. 본 논문에서는 HotSpot Code를 사용하여 서로 상이한 기상조건에 따른 결과를 비교하였다. 국내에서 발생 가능한 테러 시나리오 작성 후, RDD(Radiological Dispersal Device) 및 더티밤에 사용될 가능성이 높은 선원을 조사하였다. 기상조건은 Pasquill-Gifford 안정도 등급에 따라 가장 안정된 조건의 F, 가장 불안정한 조건의 A를 선택하여 비교하였다. 시뮬레이션을 통한 A, F 등급 결괏값은 방사선학적 영향에 의해 시민들이 급성 영향으로 사망하는 경우는 없다고 판단하였다. 또한, 풍속 및 기상 안정도에 따라 방사능의 도달 정도가 서로 다르며, 기상 조건에 따라 방사능 희석정도가 서로 다름을 확인할 수 있다. 분석결과는 방사능테러 발생 시 초동 대응에 활용할 수 있을 것으로 예상된다.

Keywords

BSSHB5_2018_v12n6_719_f0001.png 이미지

Fig. 1. Diverse Exposure Pathways of Release Radioactive Material into the Atmosphere.[14]

BSSHB5_2018_v12n6_719_f0002.png 이미지

Fig. 2. TEDE Value According to Distance.

BSSHB5_2018_v12n6_719_f0003.png 이미지

Fig. 3. Stability A, F Contour Plot.

Table 1. Main Radioactive Nuclide Amount of License/Place of Business

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Table 2. Atmospheric stability Using in HotSpot Code[13]

BSSHB5_2018_v12n6_719_t0002.png 이미지

Table 3. Main parameters obtained for HotSpot Code

BSSHB5_2018_v12n6_719_t0003.png 이미지

Table 4. TEDE value according to Stability Class A, F

BSSHB5_2018_v12n6_719_t0004.png 이미지

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