ESTIMATION OF EARLY INTERNAL DOSES TO FUKUSHIMA RESIDENTS AFTER THE NUCLEAR DISASTER BASED ON THE ATMOSPHERIC DISPERSION SIMULATION.
Estimating the early internal doses to residents in the Fukushima Daiichi Nuclear Power Station accident is a difficult task because limited human/environmental measurement data are available. Hence, the feasibility of using atmospheric dispersion simulations created by the Worldwide version of System for Prediction of Environmental Emergency Dose Information 2nd Version (WSPEEDI-II) in the estimation was examined in the present study. This examination was done by comparing the internal doses evaluated based on the human measurements with those calculated using time series air concentration maps (131I and137Cs) generated by WSPEEDI-II. The results showed that the latter doses were several times higher than the former doses. However, this discrepancy could be minimised by taking into account personal behaviour data that will be available soon. This article also presents the development of a prototype system for estimating the internal dose based on the simulations.
National Institute of Radiological Sciences, 4-9-1 Anagawa, Inage-ku, Chiba-city, Chiba, Japan eunjoo@nirs.go.jp.
Eunjoo
E
Kim
National Institute of Radiological Sciences, 4-9-1 Anagawa, Inage-ku, Chiba-city, Chiba, Japan.
Kotaro
K
Tani
National Institute of Radiological Sciences, 4-9-1 Anagawa, Inage-ku, Chiba-city, Chiba, Japan.
Naoaki
N
Kunishima
National Institute of Radiological Sciences, 4-9-1 Anagawa, Inage-ku, Chiba-city, Chiba, Japan.
Osamu
O
Kurihara
National Institute of Radiological Sciences, 4-9-1 Anagawa, Inage-ku, Chiba-city, Chiba, Japan.
Kazuo
K
Sakai
National Institute of Radiological Sciences, 4-9-1 Anagawa, Inage-ku, Chiba-city, Chiba, Japan.
Makoto
M
Akashi
D000293:Adolescent; D000328:Adult; D000388:Air; D000396:Air Pollutants, Radioactive / Q000032:analysis*; D001272:Atmosphere; D002588:Cesium Radioisotopes / Q000032:analysis* / Q000737:chemistry; D002648:Child; D002675:Child, Preschool; D003198:Computer Simulation; D004190:Disasters; D062406:Fukushima Nuclear Accident; D006801:Humans; D007457:Iodine Radioisotopes / Q000737:chemistry; D007564:Japan; D055848:Nuclear Power Plants; D011834:Radiation Monitoring / Q000379:methods*; D013961:Thyroid Gland / Q000528:radiation effects; D014915:Whole-Body Counting
D000396:Air Pollutants, Radioactive; D002588:Cesium Radioisotopes; D007457:Iodine Radioisotopes