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High radiation detected 30 km from Fukushima plant

Radiation levels 40 percent higher than the yearly limit for the general public has been detected just over 30 kilometers from the Fukushima Daiichi power plant.

The Science Ministry says a reading of 1.4 millisieverts was taken on Wednesday morning in Namie Town northwest of the plant.

Ow shit. That's an order of magnitude higher than previous values at the same town.

*Lunatic*, n.
One whose delusions are out of fashion.

by DoDo on Sun Mar 27th, 2011 at 03:39:30 AM EST
asahi.com(朝日新聞社):Radiation from Fukushima exceeds Three Mile Island - English

Meanwhile, calculations of soil contamination by experts have already produced results that are at the same level as for Chernobyl.

Cesium-137 levels of 163,000 becquerels per kilogram of soil was detected in Iitate, Fukushima Prefecture, about 40 kilometers northwest of the Fukushima plant, on March 20. That was the highest figure in the prefecture.

According to Tetsuji Imanaka, an associate professor of nuclear engineering at the Kyoto University Research Reactor Institute, if the Iitate figure was converted to one square meter, the figure would be 3.26 million becquerels.

After the Chernobyl accident, residents who lived in regions with cesium levels of 550,000 becquerels ore more per square meter were forcibly moved elsewhere.

"Iitate has reached a contamination level in which evacuation is necessary," Imanaka said. "Radiation is still being released from the Fukushima plant. The areas of high contamination can be considered to be on par with Chernobyl."

Residents who were forced to move after the Chernobyl accident were believed to have been exposed to an average of about 50 millisieverts of radiation.

However, a study of the health of residents who lived for many years on contaminated land found that the incidence of leukemia among adults did not increase.



Any idiot can face a crisis - it's day to day living that wears you out.
by ceebs (ceebs (at) eurotrib (dot) com) on Sun Mar 27th, 2011 at 05:31:34 AM EST
[ Parent ]
asahi.com(朝日新聞社):Radiation from Fukushima exceeds Three Mile Island - English

To calculate the spread of radiation using the System for Prediction of Environmental Emergency Dose Information, the Nuclear Safety Commission of Japan estimates the discharge rate for radioactive iodine per hour from the Fukushima plant based on radiation measurements taken at various locations.

Using those figures to make a simple calculation of the amount of discharge between 6 a.m. March 12 and midnight Wednesday results in figures between 30,000 and 110,000 terabecquerels. Tera is a prefix meaning 1 trillion.

The INES defines a level 7 major accident such as Chernobyl as one in which radiation of more than several tens of thousands of terabecquerels is released.



Any idiot can face a crisis - it's day to day living that wears you out.
by ceebs (ceebs (at) eurotrib (dot) com) on Sun Mar 27th, 2011 at 05:37:29 AM EST
[ Parent ]
Radiation levels 40 percent higher than the yearly limit

Do they mean radiation levels per hour, or what? Taken literally, they are comparing apples and oranges (or apples per unit time, and apples)

So, in what may be my last act of "advising", I'll advise you to cut the jargon. -- My old PhD advisor, to me, 26/2/11

by Carrie (migeru at eurotrib dot com) on Sun Mar 27th, 2011 at 06:03:56 AM EST
[ Parent ]
Stupid translator syndrome. Checking Japanese news, the reading was precisely 1,437 μSv for the period from 23:00 to 24:00 local time - but already on 25 March, apparently. Maybe this was a new measuring location. I didn't find the actual government release so far.

*Lunatic*, n.
One whose delusions are out of fashion.
by DoDo on Sun Mar 27th, 2011 at 06:24:03 AM EST
[ Parent ]
After further research, it appears that the original news reports in Japanese were even more stupid newsie syndrome. The 1437 μSv value is contained in this release, and it's a cumulative value.

*Lunatic*, n.
One whose delusions are out of fashion.
by DoDo on Sun Mar 27th, 2011 at 06:33:17 AM EST
[ Parent ]
Cumulative over 24 hours 8 minutes, to be precise.

*Lunatic*, n.
One whose delusions are out of fashion.
by DoDo on Sun Mar 27th, 2011 at 08:01:43 AM EST
[ Parent ]

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