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Term Estimation for the Fukushima Daiichi Nuclear Power Station Accident by Combined Analysis of Environmental Monitoring and Plant Data through Atmospheric Dispersion Simulation
| Content Provider | Semantic Scholar |
|---|---|
| Author | Nagai, Haruyasu Terada, Hiroaki Chino, Masashi Katata, Genki Mikami, Satoshi Saito, Keisuke |
| Copyright Year | 2015 |
| Abstract | Temporal variations in the amount of radionuclides released into the atmosphere during the Fukushima Daiichi nuclear power station (FNPS1) accident and their atmospheric dispersion are essential to evaluate the environmental impacts and resultant radiological doses to the public. We have estimated the atmospheric releases during the accident by comparing measurements with calculations by atmospheric transport and deposition model (ATDM) of air concentration and air dose rate of radionuclides. To improve our source term, we are trying to use Cs/Cs ratios of inventories in FNPS1 reactors Units 1 to 3 and those in surface deposition in East Japan. By considering the temporal change in Cs/Cs ratio of the released plume and ATDM simulations of atmospheric transport and deposition of radionuclides, spatial distribution of Cs/Cs ratio in surface deposition was explained. This result can be used to specify from which reactor the dominant release occurred for each time period, and consequently provide useful information to severe accident analysis for the FNPS1 case. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://glc.ans.org/nureth-16/data/papers/13639.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
