20,201 Bq/Kg from vacuum cleaner in Chiba



20,201 Bq/Kg and 14,531 Bq/Kg of cesium was measured from the dust of vacuum.
The former one was taken in Nagareyama Chiba, the later one was taken in Ibaraki.

Co-op Joso and National Institute for environmental studies measured dusts in vacuum cleaner in 257 houses of South Ibaraki and North-West Chiba, where are known to be hotspot.
The measurement was done in April 2012.

As a result, they measured 1,956 Bq/Kg of cesium from the dusts in vacuum cleaner at average.
The highest reading was 20,201 Bq/Kg and the second highest reading was 14,531 Bq/Kg, which are beyond the safety limit of 8,000 Bq/Kg, which is allowed to fill land as incineration ash.

According to the study of Pathological anatomist, Yury Bandazhevsky from Belarus, 90% of the children in Homyel to have 37 – 74Bq/kg of cesium measured from their cardiac muscle showed abnormal electrocardiogram.
Highly concentrated cesium in dust causes serious internal exposure to breathe in.



20,201 Bq/Kg from vacuum cleaner in Chiba






  1. FUKUSHIMA DIARY FR – 20 201 Bq/Kg dans un aspirateur, à Chiba.
    Par Mochizuki, le 2 juillet 2012.

    20 201 Bq/Kg et 14 531 Bq/Kg de césium ont été mesurés dans la poussière d’un aspirateur.
    Le précédent était à Nagareyama, à Chiba, ce dernier est à Ibaraki.

    Co-op Joso et le National Institute for Environmental Studies ont mesuré les poussières dans les aspirateurs de 257 maisons du Sud d’Ibaraki et du Nord-Ouest de Chiba, connus pour être des points chauds.
    Les mesures ont été prises en avril 2012.

    Au bout du compte, ils ont mesuré 1 956 Bq/Kg de césium en moyenne dans les poussières des aspirateurs.
    La plus haute valeur était de 20 201 Bq/Kg et la seconde 14 531 Bq/Kg, ce qui est au-dessus des 8 000 Bq/Kg de la limite de sécurité autorisée pour les décharges et les centres d’incinération.

    Selon l’étude de l’anatomo-pathologiste Yury Bandazhevsky de Biélorussie, 90% des enfants de Homyel ayant entre 37 et 74Bq/kg de césium dans leur muscle cardiaque ont présenté des électrocardiogrammes anormaux.
    Les hautes concentrations de césium dans les poussières provoquent de graves expositions internes à ceux qui les respirent.

    (copie écran)

    Source : http://www3.nhk.or.jp/news/html/20120702/k10013252681000.html

  2. Car air filters would be more informative.

    According to Arnie Gunderson the average car draws about as much air per day as the average person, if you
    measure the radiation levels of car filters you get a pretty good analog for what people are breathing in.

  3. Because this days information often gets blurry i feel it is needed to point things out specifcally. In the following excerpt from your post, there is something that i cant figure out.

    “According to the study of Pathological anatomist, Yury Bandazhevsky from Belarus, 90% of the children in Homyel to have 37 – 74Bq/kg of cesium measured from their cardiac muscle showed abnormal electrocardiogram.”

    If i were to translate that to my mother-tongue, German, I would have to possible ways of translating it:

    1. 90% OF ALL measured children showed 37 – 74Bq/kg of cesium AND abnormal electrocardiogram

    2. 90% of the children having 37 – 74Bq/kg of cesium, did show an abnormal electrocardiogram (–> 10% of the children with 37 – 74Bq/kg of cesium had NO abnormal electrocardiogram)

    This is quite confusing. Thank you!

    Sincere, Ingo

  4. I’m afraid the cars, trucks and vacuum cleaners have breathed in fatal doses of a witches brew of radionucleides.
    sidenote, those air intake mechanisms are analogous to people.

  5. This is taken from the surfaces and detritus INSIDE a home !
    This is LETHAL!

  6. Our aircon filter had about 200000Bq/kg of Cesium 134 and 137 in it. We live in Tokyo.

    1. I just want to say, those are disintegrations per second and there is a good chance it was likely higher as most testing methods short of professional specialized labs is imperfect, what you have with that number is pertinent life saving information, it is much more intelligent to act upon life saving information than ignore it then suffer the consequenses. ie, a FAMILY driving loses control of their car and crashes into a lake, do I save her or do I ignore it, I think many are ignoring it. What say you?

      1. Of course most people are ignoring it. Many simply do not want to hear about it because the truth of it all is just too dire for them to tolerate. I suppose maybe they would take it more seriously if, say, they lived in JAPAN and the situation was staring them straight in the face; they’d be unable to turn a blind eye to it then. In fact, there’d be nowhere else to turn.

        But until they’re confronted directly with a nuclear plant malfunctioning in their own neighborhoods, I don’t see the majority of the ‘American Idol’ zombie watching public at large to pay any attention… but I sincerely hope I’m wrong!!

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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.


July 2012