Tepco admitted Pu-238/239/240, Sr-90 in sea soil are from Fukushima accident
According to Tepco, significantly high level of radioactive material was measured from the sea soil.
The sample is dry soil taken offshore reactor1 water intake canal (0~10cm depth). The sampling date was 7/23/2012.
Tepco has been concealing the data for over 8 months. Cs-134 : 360,000 Bq/Kg Cs-137 : 540,000 Bq/Kg Pu-238 : 0.21 Bq/Kg Pu-239/240 : 1.2 Bq/Kg Sr-90 : 73 Bq/Kg
About this measurement, Tepco commented like this below,
The density of Pu-238 and Pu-239+240 are supposed to originate from the accident this time for the following reason.
– Pu-238 which had not been detected at the offshore of the power plant was detected this time.
– The densities of Pu-239+240 is higher than that of the range of past measurement values in the sea area near 1F and 2F.
The density of Sr-90 are higher than those of the range of past measurement values in the sea area near 1F and 2F. Therefore, there is a possibility that the higher densities originate from the accident this time.
Tepco en dit ceci :
“La densité en Pu 238 et Pu 239+240 est supposée provenir de l’accident cette fois-ci, pour les raisons suivantes :
– Le Pu 238 qui n’a pas été détecté au large de la centrale nucléaire est détecté cette fois-ci.
– Les densités en Pu 239+240 sont plus hautes que celles des relevés passés dans la zone maritime près de F1 et F2.
La densité du Sr 90 est plus forte que celles des relevés passés dans la zone maritime près de F1 et F2. Donc, there il est possible que ces densités plus élevées proviennent de l’accident cette fois-ci.”
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.