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Computer-based system WSPEEDI-II is developed for predicting atmospheric dispersion of radionuclides discharged by nuclear accident in the world.
Feb. 5, 2009 |
| (1) | It can predict the atmospheric dispersion and the deposition on the ground precisely in the area from several 10 km to hemisphere, |
| (2) | It can predict the source condition, e.g., release point, release time, discharged amount, by coupling simulation with monitoring, in the case when air dose rates increase at the domestic monitoring points before the accident information is acquired, and |
| (3) | It can exchange the prediction results with other emergency response systems in the United States and Europe to evaluate the accuracy of prediction. |
Due to the increase of the demand for energy and the global warming problem, it is expected that nuclear power plants will increase in China, India and other countries. In the case when a large-scale nuclear accident like Chernobyl occurs for the worst, it would happen that radionuclides are transported to other countries in addition to the environmental contamination around a nuclear site. To prepare for such an accident, the 1st version of WSPEEDI was developed in 1997 and, by successive improvement based on the operation experiences, the 2nd version with high-performance functions is completed.
By the practical operation in future, the roles to support the countermeasures for public safety and emergency monitoring, etc. is expected to WSPEEDI-II. It will be also utilized for researches on atmospheric environment.
