Model for Transport of Accidently Released Radionuclides onto Rice-Fields and its Comparison with Experimental Data

사고시 논으로 유출된 핵종 이동 모델 및 실험결과와의 비교

  • Published : 2004.06.30

Abstract

A dynamic compartment model was developed to evaluate the transport of accidently released radionuclides onto rice-fields. In the model, the surface water compartment and shoot-base absorption were introduced to account for the effect of irrigation, which is essential to a rice cultivation. The soil mixing by plough and irrigation before transplanting rice was also considered, and the rate of root-uptake and shoot-base absorption were modeled in terms of the function of biomass. In order to test the validation of the model, it was applied to the analysis of some simulated $^{137}Cs$ deposition experiments that were performed while cultivating rice in a greenhouse using soils sampled from rice-fields around Kori, Yonggwang and Ulchin nuclear power plants. The model prediction was generally agreed within about one order of magnitude with experimental data.

References

  1. Muller, H. and G. Prohl, 'ECOSYS-87: A dynamic model for assessing radiological consequences of nuclear accident,' Health Physics, 64, 232-252(1993)
  2. Abbott, M.L. and A.S. Rood, 'CORMIDA: A radionuclide food chain model for acute fallout deposition,' Health Physics, 66,17-29(1994) https://doi.org/10.1097/00004032-199401000-00003
  3. Whicker, F.W. and T.B. Kirchner, 'PATHWAY: A dynamic food-chain model to predict radionuclide ingestion after fallout deposition,' Health Physics, 52,717-737(I987) https://doi.org/10.1097/00004032-198706000-00003
  4. Hwang. W.T., G. Cho and M.H. Han, 'Development of a dynamic food chain model DYNACON and its application to Korean agricultural conditions,' J. of Nuclear Science and Technology, 35(6), 451-461 (1998)
  5. 유동한, 최희주, 이한수, 섭식경로를 통한 방사성핵종의 거동분석을 위한 수학적 모델 개발에 대한 연구, KAERI/TR-2291, (2002)
  6. Myttenaere, C., P. Bourdeau and M. Masset, 'Relative importance of soil and water in the direct contamination of flooded rice with radiocesium,' Health Physics, 16, 701-707(I969)
  7. D'Souza, T.J., and K.B. Mistry, 'Ansorption of gamma-emitting fission products and activation products by rice under flooded and unflooded conditions from two tropical soils,' Plant and Soil, 55, 189-198(1980)
  8. 금동권, 이한수, 최희주, 이창우, EOCREA-RICE (version 1), 2003-01-12-5222, 프로그램 조정심의위원회(2003)
  9. Keum, D.K, H.S. Lee, H.J. Choi, H.S. Kang, K.M. Lim, Y.H Choi and C.W.Lee, A dynamic compartment model for assessing the transport of radionuclide deposited onto flooded rice-fields,' J. Environmental Radioactivity, in press(2004)
  10. Choi, Y.H., K.M. Lim, W.Y. Lee, S. Diabate and S. Strack, TWFT and OBT in the rice plant acutely exposed to atmospheric HTO vapor under semi-outdoor conditions, J. Environmental Radioactivity, 58, 67-85(2002)
  11. Lee, J.H.,Y.H. Choi, W.T. Hwang, M.H. Han, W.Y. Lee, H.K. Park, and C.W. Lee, C.W. Development of computer code for evaluating internal radiation dose through ingestion and inhalation pathways, KAERI/RR-998/90, Korea Atomic Energy Research Institute(1991)
  12. 이은웅, 4정 수도작, 향문사, 서울, 1996.
  13. Chamerlain, A.C., 'Interception and retention of radioactive aerosols by vegetation,' Atmo. Env. 4, 57-78(1070)
  14. Anspaugh, L.R., J.H. Shinn, P.L. Phelps, and N.C. Kennedy, Resuspension and redistribution of plutonium in soils, Health Physics, 29, 571-582(1975)
  15. Miller, C.W. and F.O. Hoffman, 'An estimation of the environmental half-time for radionuclides deposited on vegetation,' Health Physics, 731-744(1983)
  16. 최용호, 임광묵, 박효국, 최희주, 이한수, 고리 및 영광 논토양에 대한 137Cs 의 모의사고 침적시 토양 벼-전이계수, 대한방사선방어학회지, 27,201-205(2002)
  17. 최용호, 방사선 환경 방호기술 개발:육상 생태계 사고영향 평가기술개발, 1단계 최종보고서, KAERI/RR2035/99(2000)
  18. 이한수, 사고시 육상생태계 방사능 영향평가 기술개발, KAERI/RR-2346/2002(2003)