Posted by:
Brother Of Jerry
(
)
Date: July 17, 2011 12:29AM
radiation is very dangerous stuff. It can also be measured with great precision.
When poster "hello" said that the entire island of Honshu was effectively uninhabitable, and all of Japan was dying, I calling bullshit. I asked for numbers. I haven't looked through all the links that hello provided, but I will.
I did a single google search and the first hit was the International Atomic Energy Agency. That seemed like a good place to look for real information.
Here's the link to the page I read:
http://www.iaea.org/newscenter/news/tsunamiupdate01.htmlHere are 3 paragraphs from section 2 of the page - it is bureaucratic and boring, but I tend to trust bureaucratic data. It turns out it is actually hard to fake really boring data, and the IAEA doesn't have a whole lot of incentive to fake the data in any case. Anybody can buy a radiation dosimeter and check the numbers themselves.
OK, the 3 paragraphs:
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2. Radiation Monitoring
The daily monitoring of the deposition of caesium and iodine radionuclides for 47 prefectures is continuing. Since 17 May, deposition of I-131 has not been observed. Low levels of Cs-137 deposition were reported in a few prefectures on a few days since 18 May; the reported values range of from 2.2 to 91 Bq/ m2 for Cs-137.
Gamma dose rates values for all 47 prefectures are reported daily by the Ministry of Education, Culture, Sports, Science and Technology (MEXT) of Japan. On 31 May the gamma dose rate reported for Fukushima prefecture was 1.5 µSv/h. In all other prefectures, reported gamma dose rates were below 0.1 µSv/h; with a general decreasing trend. Meanwhile, the decrease of the gamma dose rate has slowed down, since the short-lived radionuclides have decayed away.
Gamma dose rates reported specifically for the monitoring points in the eastern part of Fukushima prefecture, for distances of more than 30 km from the Fukushima Daiichi plant, showed a general decreasing trend, ranging from 0.1 µSv/h to 17 µSv/h, as reported for 31 May.
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I said it was boring. I don't know much about Bequerels per square meter, but I do know a bit about ionizing radiation. Long story. Anyway, in the middle paragraph, the following figures are given: 1.5 µSv/h in Fukushima (I assume that is an average, because it has got to be much higher than that within the exclusion zone). 0.1 µSv/h in neighboring prefectures.
OK, so how much is 0.1 µSv/h? 0.1 µSv is what you get from the potassium in 1 average banana. Or 6 minutes flying in a commercial jet. Or about 100 minutes of just sitting around in Utah (because of the altitude). It is about one seven thousandth of a chest CT scan. It is an amount so small that it is on the ragged edge of what they can measure, because it is so much lower than normal background radiation.
BTW, the dose you get each year from the potassium in your own body is 390 µSv, the equivalent of 3,900 bananas.
The average annual background dose of gamma radiation for a person is 4,000 µSv/yr, or 40,000 bananas.
So, when the readings reported in prefectures near Fukushima are only 20% [edit: I blew the math. An extra 0.1 µSv/hr is a 2% increase over normal background radiation. D'oh!] or so higher than normal background radiation, do you see why I tend to call BS on claims that Japan is dying?
I found the rest of the IAEA report fairly alarming. They have a major disaster on their hands, and there is potential for it to get much worse than it is. But "Japan is dying"? Hardly.
And if you think the IAEA is lying, show me the proof of that. Greenpeace was backing up US govt figures in Hawaii, and reporting the same results. None of this is rocket science. a bachelors degree in physics would be enough background to be able to double check the figures, and there are a lot of physics grads in the world.
Edited 1 time(s). Last edit at 07/17/2011 12:53AM by Brother Of Jerry.