Tepco changed the analysis method for Strontium-90

On 9/27/2013, Tepco announced they are going to introduce the new means of Strontium-90 analysis.

According to Tepco, they have been applying the gas flow detector to analyze Strontium-90. It takes one month to detect, they have been having 90 samples unanalyzed every month.

The new means of β nuclide analysis equipment has been introduced since 9/19/2013. It’s estimated to take approx. 10 days to complete analysis.

Tepco states there are 200 samples unanalyzed yet. The new means are to be applied to these 200 samples in the beginning.

When they analyzed the same sample (leaked water from the underground reservoir) by both of the means, it was 7,700,000 Bq/m3 by the new means, where it was 8,200,000 Bq/m3 by the old means. In this comparing study, the new analyzing way indicated the smaller reading. Tepco commented it was almost the same reading, which is acceptable.






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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.


September 2013