System Modelling Approach of Radionuclide Soil-to-Plant Transfer for Nuclear Emergencies Decision; Case Study - China

Nuclear Energy Development is gradually gaining root in the energy mix of the Chinese society. It is quite evident to develop all possible emergency evaluation situation in the event of nuclear energy. Nuclear Emergency falls under the relative serious emergency incident grades according to the degree of social harm done and the extent of repercussions and other factors. This paper illustrates system modelling predictions of the transfer of radiocesium from soil-to-plant during nuclear emergency. Planned discharges of radionuclides are passed by mathematical models that can be used as tools to evaluate the effective ways of countermeasure actions in an event of an emergency. The empirical approach often associates with considerably uncertainty due to the large variability in the transfer factor The mechanistic approach also presents complexities and a large amount of specific parameters makes this approach impractical for nuclear emergency preparedness and response purposes. The semi-mechanistic approach factorizes more soil and plant parameters than the empirical approach. Therefore, it is applicable to a wider range of environmental conditions. The nuclear emergency adapts the parameterization of the Absalom model which is sufficiently robust and practical, hence fit more for the purpose of planning and responding to nuclear emergencies as compared to the empirical and mechanistic approaches.