Japan Fails to Disclose 10-T.-Becquerel Radioactive Fallout Estimate


Tokyo, April 3 (Jiji Press)–The Japanese government has failed to disclose a SPEEDI estimate that some 10 trillion becquerels per hour of radioactive iodine was released into the environment from the crippled Fukushima No. 1 nuclear power plant on March 14 last year, it was learned Tuesday.
Using the System for Prediction of Environmental Emergency Dose Information and based on iodine levels monitored in Chiba, east of Tokyo, the Japan Atomic Energy Agency came up with the figure on March 15 the same year, four days after Tokyo Electric Power Co.’s <9501> nuclear power plant in northeastern Japan was ravaged by the 9.0-magnitude earthquake and tsunami.
The independent government agency also calculated discharged cesium-134 and 137, both also radioactive, amounted to one trillion becquerels per hour each on that day.
But those SPEEDI estimates have never been disclosed to the public, due to poor communications between the JAEA and the Nuclear Safety Commission, informed sources said.
SPEEDI provides projections on the dispersal of radioactive substances based on meteorological, geographical and other data.

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However, Japanese article of Jiji reports it was due to the poor communications between MEXT and the nuclear safety commission. It is not reported where this difference comes from.

Source (English)

Source (Japanese)



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.


April 2012