Residential district accumulates radiation


Radiation is accumulated in city infrastructure.

Yokohama city government measured high level of radiation in 8 of 206 stormwater reservoirs for flood control.
Yokohama city is the second biggest city in Japan. It’s in Kanagawa prefecture and my hometown.

There are 218 reservoirs in Yokohama city. They measured radiation level in 206 of them for the safety of cleaning workers of mud or grass stuck inside of the reservoirs.
As a result, they measured radiation higher than 0.23 μSv/h (1m above from the floor) at 16 locations of 8 reservoirs. The highest reading was 0.37 μSv/h in Izumi ku, where is further than Tokyo from Fukushima plant, 260km.

Residential district accumulates radiation

Yokohama city government is going to leave 6 reservoirs uncleaned, remove mud and soil from 2 reservoirs to keep in facility.



<Settlement report 8/12/2012>

This is the space to report how much donation I received today.

This is the second report of today, sorry.

I think I need to post more articles in perspective sometimes. Getting into too much details makes you miss where you are going.

I really want to know what is going on under the reactors of Fukushima.  Where are the nuclear fuel ? How hot are they now ?

There is zero information given by Tepco. It’s really hard.

Settlement report 8/12/2012


Settlement report 8/12/2012 2



  1. FUKUSHIMA DIARY FR – les zones résidentielles accumulent la radioactivité
    Par Mochizuki, le 13août 2012.

    La radioactivité s’est accumulé dans les infrastructures urbaines.

    La municipalité de Yokohama a relevé de hauts niveaux de radioactivité dans 8 des 206 réservoirs d’eau de pluie contre les inondations.
    La ville de Yokohama est la seconde ville du Japon par sa taille. Elle est dans la préfecture de Kanagawa et c’est ma ville de naissance.

    Il y a 218 réservoirs dans Yokohama. Ils en ont relevé la radioactivité dans 206, pour la sécurité des travailleurs les nettoyant des leur boue ou des herbes qui poussent dedans.
    Ils ont relevé des niveaux supérieurs à 0,23 μSv/h (à 1 m du sol) en 16 points de 8 réservoirs. Le plus haut était à 0,37 μSv/h à Izumi ku, qui se trouve plus loin de la centrale de Fukushima que Tokyo, à 260km.


    La municipalité de Yokohama va laisser 6 réservoirs sans nettoyage et enlever la boue et le sol de 2 réservoirs pour les garder utilisables.

    Source :

    (rapport financier du 12 août 2012)

    Ici l’espace pour dire combien j’ai reçu aujourd’hui.

    C’est la deuxième fois aujourd’hui, désolé.

    Je pense que je dois mettre plus d’articles en vue parfois. mais trop entrer dans les détails vous fait perdre de vue où vous allez.

    Je voudrais vraiment savoir ce qui se passe sous les réacteurs de Fukushima. Où est le combustible ? Quelle est leur chaleur maintenant ?

    Il n’y a strictement rien là-dessus chez Tepco. C’est vraiment difficile.

    Dons : 11,00 $
    Frais : 10,37 $
    Reste : 0,63 $

    Objectif : 2 000,00$
    Total … : 389,50$
    Trouver : 1 610,50$

    Acquis.. = 19,5 %
    Manque = 80,5 %

  2. Yokohama is south of Tokyo. So if Yokohama is highly contaminated so does Tokyo.
    But the contamination might not come from Fukushima only.
    It could also come from the nuclear wastes burning fascilities south of Tokyo. Wish are re-sending all the radiation particles back up into the aire.
    Remember that Fukushima is still emitting and sending up and all over japan radiation particules.
    Basically, Fukushima emits the equivalent of a new Fukushima or Chernobyl explosion every 3 to 10 years. Not a good idea to live around an on-going slow motion chernobyl explosion, but that is what is going on.

  3. What was the level of radiation pre accident? No data on that? This is not a scientific survey. 0.2 is not highly radioactive, it could very well be normal background rate. What are the rates in Hong Kong for example. As for the burning of debris, this is another foolish urban legend flying around the internet. There is so much hype and nonsense about the accident it is incredible. The burning of debris may release anywhere from 2 to more billion becquerals into the air, but this would not be a direct link to radiation on a wide scale. There were petabecquerals released by the accident itself. The only place I know to go for reliable data is either the MEXT site or ACRO. Arnie Gunderson took samples and said it was radioactive but did not publish the data.

  4. I disagree, the best place to go for data is citizen monitoring, your own or the you tubes up. From them you can see how hot it is within view of Daiichi. You can see what placing the monitor near a drain does. You can establish what your background radiation levels are in various places. You can detect radioactive aerosols and form your own opinion without having to rely on very corrupt nuke people who lie for a living.

  5. Nuke Chic

    Azabu-juuban is a trendy but old “downtown” shopping center a short stroll from Roppongi Hills, Tokyo.
    When ordering your preferred degree of roasting for the best coffee beans in Japan (you know, from that understated coffee bean store near the playground), be sure to wear protective gear:

    Has anyone been keeping a regular record of the data from this site? The readings appear to be climbing over the months. During the recent typhoon they shot up to nearly 5.0 microSv/hour.I have checked the readings on my Air Counter when,yes,shopping for my favorite beans, and the readings tally with those on the bobbytech site.

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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.