Finally getting some contamination levels to go with the radiation.

DHT found a link that finally offers some solid contamination numbers in Nippon, along with isotopes. Of course this is a long way from Fukushima.

The education ministry said 77 becquerels of iodine was found per kilogram of water in Tochigi, 2.5 becquerels in Gunma, 0.62 becquerels in Saitama, 0.79 becquerels in Chiba, 1.5 becquerels in Tokyo and 0.27 becquerels in Niigata, against an intake limit of 300 becquerels.

The amount of cesium per kilogram of water was 1.6 becquerels in Tochigi and 0.22 in Gunma, against the limit of 200 becquerels set by the Nuclear Safety Commission of Japan.

Those are the main two we expect from reactors. Exposed spent fuel wouldn’t add Iodine-131, I assume it would Cesium-137. (~30-year half-life)

After breaking new ground with the spent fuel disasters, I still fear finding isotopes not normally seen out and about. But most of it isn’t mobile the way iodine and cesium are. And again, the reports aren’t near the site.

It’d be good to know the levels at the boundary of the evacuation zone. Maybe those higher numbers are close.

Shortly we’ll get into contamination terms and issues. Have been waiting on some numbers to work with.

UPDATE–This is the NYT article DHT first meant to send. Where are the rad numbers? I guess “All The News That’s Fit To Print” doesn’t include, you know…data.

Oh.  I see at the very end they do close with the only truly important statistic:

The National Police Agency said Saturday that there were nearly 7,200 confirmed deaths so far because of the earthquake and tsunami on March 11, and nearly 11,000 people remained missing. The authorities have said they expect the death toll to exceed 10,000.

Requiescat in pace.

About wormme

I've accepted that all of you are socially superior to me. But no pretending that any of you are rational.
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3 Responses to Finally getting some contamination levels to go with the radiation.

  1. waytoomanydaves says:

    Wow. Tap water. Within eight days. They must be getting their water from runoff, no? Could it get into wells that quickly?

    Which reminds me… my own city drinks mountain runoff. Western Washington, Seattle area. Swell.

    Yeah, I know… “no measurable danger”. Still.

  2. Engineer Bob says:

    A nice graphic representation from XKCD about radiation exposure levels. No surprises to people here, but I think it is useful to have a diagram to point to.

    XKCD, H/T to BoingBoing.

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