Preliminary results of consequence assessment of a hypothetical severe accident using Thai meteorological data

International Nuclear Science and Technology Conference 2016

Silva, K.^1 ; Lawawirojwong, S.^2 ; Promping, J.^1

Thailand Institute of Nuclear Technology (Public Organization), 9/9 Moo 7 Sai Moon, Ongkharak, Nakhon Nayok

26120, Thailand^1

Geo-Informatics and Space Technology Development Agency (Public Organization), Chaengwattana Road, Laksi Bangkok

10210, Thailand^2

关键词: Atomic Energy Agency;    Consequence assessment;    Environmental transport;    Ground concentrations;    Low wind speed;    Meteorological condition;    Meteorological data;    Severe accident;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/860/1/012039/pdf
DOI  :  10.1088/1742-6596/860/1/012039

来源: IOP

【 摘 要 】

Consequence assessment of a hypothetical severe accident is one of the important elements of the risk assessment of a nuclear power plant. It is widely known that the meteorological conditions can significantly influence the outcomes of such assessment, since it determines the results of the calculation of the radionuclide environmental transport. This study aims to assess the impacts of the meteorological conditions to the results of the consequence assessment. The consequence assessment code, OSCAAR, of Japan Atomic Energy Agency (JAEA) is used for the assessment. The results of the consequence assessment using Thai meteorological data are compared with those using Japanese meteorological data. The Thai case has following characteristics. Low wind speed made the radionuclides concentrate at the center comparing to the Japanese case. The squalls induced the peaks in the ground concentration distribution. The evacuated land is larger than the Japanese case though the relocated land is smaller, which is attributed to the concentration of the radionuclides near the release point.