Author:
Koike T,Suzuki Y,Genyu S,Kobayashi I,Komori H,Otsu H,Sakuma H,Sakuma K,Sarausad E M,Shimada K,Shinozuka T,Tamura H,Tsukada K,Ukai M,Yamamoto T O
Abstract
Abstract
Data related to radioactivity released from the Fukushima Daiichi Nuclear Power
Plant (FDNPP) accident on 15 March 2011 gathered by residents of Miharu,
Fukushima Prefecture, and by Tohoku University are presented. These data sets
consist of (1) the earliest radiation monitoring by a Geiger counter in the
town, (2) ratios of radioactivity between 132Te and 137Cs
for a wide area between Fukushima and Tokyo, (3) radiation measurement of soil
samples collected from 18 school grounds, and (4) external radiation exposure of
1400 students using OSL badges. By combining and analysing these various data
sets, a curve for the cumulative total external exposure as a function of time,
with 16 : 00 h on 15 March 2011 being time zero, is obtained.
The average cumulative external dosage is estimated to be 10 mSv
(σ = 4.2 mSv) over 10 years. In
addition, the initiative that the residents of Miharu took in response to the
FDNPP accident, which became known as The Misho Project (MP), is documented; in
particular, the time at which the municipality instructed the immediate
ingestion of iodine tablets by those under the age of 40,
13 : 00 h on 15 March 2011, is assessed.
Subject
Public Health, Environmental and Occupational Health,Waste Management and Disposal,General Medicine
Cited by
7 articles.
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