Japanese elementary school have their students measure radiation at a class and one of them found a hotspot of 0.8μSv/h on the roof of the building.
The school is in Hayama, near Kamakura.
In the end, they removed the contaminated soil and leaves to bury underground.
This is the report of the board of education.
On 2/14/2012, the students of the fifth grade in Hayama elementary school (10 years old) measured radiation around the school building by using the dosemeter given by MEXT. It was the class of environment education, to study radiation. As the result, a student found out the hotspot of 0.8μSv/h in gutter of the rooftop of the building.
At 16:00, the principal reported it to board of education. 0.7~0.8μSv/h was measured in the second check. Soil and dead leaves were removed.
After the decontamination, it went down to 0.04~0.05μSv/h. The removed soil and dead leaves were put into double plastic bags and beried 1m underground.
All the public schools and nursery schools will measure radiation level around gutter etc from now. In case they find hotspot, it shall be decontaminated.
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