Construction of precise contamination maps in the Fukushima site

Saito, Kimiaki ; Takahashi, Fumiaki ; Kinouchi, Nobuyuki ; Saegusa, Jun; Fujiwara, Mamoru*; Tanihata, Isao*; Saito, Takashi*; Shimoura, Susumu*; Ikeuchi, Yoshihiro*

Several different kinds of maps on contamination due to the Fukushima nuclear accident were constructed based on the results of extensive environmental monitoring conducted from June 6, 2011 to July 8 around the Fukushima site. More than 10,000 soil samples were collected at some 2,200 locations and analyzed to construct concentration maps for $^{137}$ Cs, $^{134}$ Cs, $^{131}$ I, $^{rm 129m}$ Te, $^{rm 110m}$ Ag, $^{238}$ Pu, $^{239+240}$ Pu, $^{89}$ Sr and $^{90}$ Sr. At each location, the dose rate in air was measured by a calibrated survey meter. Car-borne surveys were performed using six taxis equipped with KURAMA systems which successively send dose and position data through a cellular network. Roads at more than 17,000 km were covered by the surveys. Bases on these data, dose rate distribution maps were constructed.

Language	:	English
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Meeting title	:	13th International Congress of the International Radiation Protection Association (IRPA-13)
Held date	:	2012/05
Location (city)	:	Glasgow
Location (country)	:	U.K.
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DOI for research data	:	Link to research data related to this paper/report.
Keywords	:	福島第一原子力発電所事故; Fukushima Daiichi Nuclear Power Station Accident
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Article of JAEA R&D Review	:
Cooperating Institute	:	文部科学省

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Registration No. : BB20120563
JAEA Abstracts No. :
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