Decontamination on asphalt can decrease the radiation level only by 20%

According to the decontamination assessment report by MOE, decontamination on asphalt can decrease the radiation level only by 20% at average. (Water pressure is about 5MPa)

Even by high-pressure washing with brushing, radiation level decreases only by 28%.
When they remove the surface of the asphalt, the average decreasing level is still only 31%.

Additionally, wiping the roof of houses can decrease radiation level by 15% at average.
Mowing the lawn decreases the radiation level by 19% at average too.



Thank you for considering donation !


Français :

La décontamination sur l’asphalte réduit le niveau de radioactivité de 20 % au mieux

Selon le rapport de contrôle du MOE (min.env.), la décontamination de l’asphalte peut diminuer son niveau de radioactivité tout au plus de 20 % en moyenne. (la pression de l’eau est d’environ 5 MPa)

Même avec un lavage à haute pression et brossage, le niveau de radioactivité ne diminue que de 28 %.
Quand ils retirent la surface de l’asphalte, la réduction reste toujours à 31 % seulement.

De plus, retirer les toits des maisons réduit le niveau de radioactivité de 15% en moyenne.
Enlever la pelouse réduit la radioactivité de 19 % en moyenne.

Merci pour vos dons !

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 2013