1200 Bq/Kg of Strontium 90 ,7000 times more than before 311

 

Tepco announced they measured 1200 Bq/ Kg of Strontium 90 from the sea ground soil at the south side of the intake of reactor 1~4 on 1/12/2012. They also measured 15~620 Bq/ Kg of Strontium at 3 different locations.
The samples were taken from 11/24/2011 ~ 11/25/2011. Before 311, the maximum reading was 0.17 Bq/ Kg, which is less than 1/7000 of after 311.

(Source)

ストロンチウム90 事故前の7000倍

福島原発 取水口海底土から検出
東京電力は12日、福島第1原発(福島県大熊町、双葉町)1~4号機取水口付近の海底土から放射性物質のストロンチウム90が事故前の最大値の7000倍を上回る濃度で検出されたと発表しました。生体への影響が大きいストロンチウム90の海洋汚染の深刻さを示しています。

東電は昨年11月24、25の両日、福島第1原発の港湾内9カ所で海底土を採取し、そのうち4カ所の海底土に含まれるストロンチウム90などの濃度を分析しました。その結果1~4号機取水口内南側で採取した海底土1キログラムからストロンチウム90が1200ベクレル検出されたのをはじめ、ほかの3地点でも同じく15~620ベクレル検出されました。

福島第1原発と福島第2原発周辺の海底土で事故前に検出されたストロンチウム90の濃度は最大で1キログラム当たり0・17ベクレルでした。1~4号機取水口内南側で採取した海底土から検出されたストロンチウム90の濃度は、その7059倍に相当します。

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.

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