[Twice a month → Once a month] Tepco to decrease the frequency of Sr-90 analysis in seawater

High level of radiation is detected in groundwater and seawater. It is suspected that contaminated groundwater is flowing to the sea.

On 7/12/2013, Tepco announced they are going to take Strontium-90 analysis in more locations of Fukushima nuclear plant port.

However, actually they are going to decrease the frequency of Sr-90 analysis in seawater from twice a month to once a month.

It’s North side of reactor1~4 water intake, and inside of the silt fence of reactor3 and 4, where they detect they highest density of radioactive material.

They are likely to measure the highest density of Sr-90 in these two locations but they make it impossible for us to know Sr-90 density trend.

Additionally, Tepco states they are going to announce Sr-90 as comparison to the safety limit and exposure dose instead.

This may make Tepco look like they are concealing Sr-90 contamination in seawater, which is more harmful than Tritium, but they only announced they decided it based on the analysis capacity.

They didn’t mention Plutonium density in seawater.

 

[Twice a month → Once a month] Tepco to decrease the frequency of Sr-90 analysis in seawater

 

http://www.tepco.co.jp/nu/fukushima-np/handouts/2013/images/handouts_130712_05-j.pdf#page=2

 

 

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Français :

[Bimensuel → mensuel] Tepco réduit la fréquence des analyses du strontium 90 dans l’eau de mer

 

La radioactivité est forte dans les eaux souterraines et marines. On pense que les eaux souterraines s’écoulent en mer.

Le 12 juillet 2013, Tepco annonce qu’ils vont analyser le strontium 90 sur plus d’endroits du port de la centrale nucléaire de Fukushima.
En fait, ils réduisent la fréquence des analyses du Sr 90 de bimensuelles à mensuelles.
Ils ont relevé des records de radioactivité au nord de la prise d’eau des réacteurs 1 à 4 et à l’intérieur de la digue de boue des réacteurs 3 et 4.
Ils ont certainement aussi relevé des records de Sr 90 à ces mêmes endroits mais ils nous rendent impossible de connaître la tendance des concentrations de Sr 90.
De plus et à la place, Tepco affirme qu’ils vont donner le Sr-90 en dose ambiante et le en comparant avec la limite de sécurité.
Ceci peut faire sembler que Tepco censure la contamination en Sr 90 dans l’eau de mer, qui est plus dangereuse que celle du tritium, mais ils ont seulement dit qu’ils l’avaient décidé en fonction de leurs capacités d’analyse.
Ils ne parlent pas de la concentration en plutonium de l’eau de mer.

[Twice a month → Once a month] Tepco to decrease the frequency of Sr-90 analysis in seawater

http://www.tepco.co.jp/nu/fukushima-np/handouts/2013/images/handouts_130712_05-j.pdf#page=2

Merci de votre soutien. Les virements mensuels sont aussi très utiles !

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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