220 tons of highly radioactive water leaked and a part of it leaked to the sea

12/4/2011 11:30AM, a sub-contractor worker found highly radioactive water was leaking from water purifying system. It was from the water conversion section.

The worker reported that 45 tons of contaminated water leaked but potentially 220 tons of polluted water had leaked out.

It contains 45,000 Bq/L of cesium, which is 300 times much as some kind of a “safety limit”, and it contains 1 million times much strontium as some kind of a “safety limit”.

As to Strontium, Tepco does not announce the actual amont contained in the water.

The water purifying system can not filter out strontium, which is water soluble.

The tank contains over 10,000 tons in total.

The leaked water flowed into a gutter which is connected to the sea at 500 meters away.

They could not do anything more than put sandbags.

The leaked water is more contaminated than the water that Tepco leaked in April on purpose.

The surface emits 110 mSv/h of beta radiation, mostly from Strontium etc., and 1.8 mSv/h of gamma radiation, mostly from Cesium.









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.


December 2011