43,780 Bq/kg from firewood ash

43,780 Bq/kg from firewood ash

43,780 Bq/Kg of cesium was measured from the ash of firewood. This firewood was taken from a mountain and left in a yard of a house in Nihonmatsu shi Fukushima.

A citizen in Nihonmatsu shi asked the ministry of the environment if they can use the firewood. As they tested it to burn, they measured 43,780 Bq/Kg of cesium on 11/23/2011. It is beyond the limit of 8,000 Bq/Kg which they can treat as normal garbage.
From the sample they burnt on 11/22/2011, they measured 28,660 Bq/Kg of cesium.

From the wood of zelkova, they measured 4,395 Bq/Kg of cesium. Apart from the skin, it was 103.8 Bq/Kg.
In November of 2011, Forestry agency banned to sell firewood which contains more than 40 Bq/Kg, but woods taken from a mountain were out of the restriction. Ministry of the environment announced not to sprinkle the ash in garden or farm to 8 prefectures in Kanto and North Japan.

Source 1,2,3,4,5

About this site

This website updates the latest news about the Fukushima nuclear plant and also archives the past news from 2011. Because it's always updated and added live, articles, categories and the tags are not necessarily fitted in the latest format.
I am the writer of this website. About page remains in 2014. This is because my memory about 311 was clearer than now, 2023, and I think it can have a historical value. Now I'm living in Romania with 3 cats as an independent data scientist.
Actually, nothing has progressed in the plant since 2011. We still don't even know what is going on inside. They must keep cooling the crippled reactors by water, but additionally groundwater keeps flowing into the reactor buildings from the broken parts. This is why highly contaminated water is always produced more than it can circulate. Tepco is planning to officially discharge this water to the Pacific but Tritium is still remaining in it. They dilute this with seawater so that it is legally safe, but scientifically the same amount of radioactive tritium is contained. They say it is safe to discharge, but none of them have drunk it.


January 2012