Development And Application Of A GIS-based Diffusion And Simulation System For Nuclear Accident

With the utilization of clean energy to reduce air pollution, nuclear energy as oneof them has been used in several provinces in China. Although it alleviates theburden on strained resources, it also brings potential security problems to theneighboring people and environment. Historical nuclear accidents show that nuclearleaks can bring serious threat to human life and nearby ecosystem. Once a nuclearaccident happens, policy-makers should perform rapid and real-time simulation on itsdiffuseness region first before making any emergency respond and control plans.That is, the simulation of radionuclides transportation is the first and foremost step tomake a sound and efficient control plan to nuclear accident.To rapid and real-time simulate the radionuclides transportation in a nuclearaccident, an integrated dispersion model has been developed. It integrates theHYSPLIT and CALPUFF model to perform the modeling and simulation, whichcreates a streamlining and user-friendly estimation process from weather forecast tosource trace and diffusion simulation. Besides, the integrated dispersion modeintroduced the GIS components (DotSpatial) to provide GIS map visualization. Atest case has been applied to the model. The results show that it can conduct asmooth analysis of “weather forecast-source trace simulation-diffusion simulation–visualization analysis” and work out the diffuseness region of test nuclear accident.The integrated dispersion model provides policy makers a comprehensive,user-friendly tool for sound and efficient control plan making to a nuclear accident.