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Friday, November 25, 2011

☢ Fukushima Cesium 14,600 Bq/Kg Wild Boar Same As Countires Around Chernobyl ☢

There have been measurements taken by The Ministry of Health, Labor and Welfare now and radiation measurements of wild animals in Fukushima now show high levels of Cesium 137 in almost all types of animals. The ones that stand out the most are boar, bear and also deer. The measurements started 10/3/2011.

40 samples of boar were taken and results shows that levels of Cesium 137 to be as high as 14,600 Bq/Kg in one sample.

Sample from Nihonmatsushi: 676 Bq/Kg
Sample from Fukushimashi: 640 Bq/kg

Common pheasant: 402 Bq/kg
Duck: 165 Bq/kg
Japanese deer: 464 Bq/kg ( They took only one sample but the only one sample was irradiated.)

Fukushima Diary did a great job translating parts of the measurements and you can read the original story here
And the source

Now what we have learned from Chernobyl is that radiation in animals actually vary from year to year. If we have a look at the diagram of Cesium 137 measurements collected in Moose from Sweden over the past years since the Chernobyl disaster we can clearly see how the radiation some years shoot up and the go down a bit again the next year. Although Sweden is far away from Chernobyl the levels are still high in animals.
We can see that in 1986 the year of the Chernobyl disaster the average levels in Moose were around 1500 Bq/Kg this is the maximum allowed level to be able to sell the meat in Sweden. The yearly consumption of 50 Kg of this meat would make you're own body radiate 1 millisieverts per year. This would be the equivalent to the background radiation but inside you're body. We see that even 20 years later in 2006 the radiation levels in Moose are still well above 1000 Bq/Kg in Sweden almost as high as in the years after the disaster however the next year 2007 the levels have dropped again. Why is that?

Well it has to do with what the animals eat. If for instance there is a good year with plenty of mushrooms then the radiation would again shoot up in animals that consume this sort of food. And if they move to areas that have a higher concentration of radiation then there would be the same effect. However if the animals move to less contaminated areas and there for instance where less mushrooms that year for them to eat then the radiation levels would go down again. And this is what we now see in Fukushima with the animals. But on thing is for certain, the radiation wont go away, this we can clearly see from Chernobyl and this stuff will stay with us for some 60 years before it's completely gone from the soil. Now Chernobyl  was "small" compared to Fukushima, the radiation and the whole situation is still out of control there with workers that tweet and say they are unable to even enter the buildings due to the radiation levels. So because of that and with the "smart" move by the Japanese Government along with TEPCO to start burning radioactive waste all over the country this I'm afraid is only the beginning.

This is what airborne radiation does to animal / humans.. Now what about the radiation that is pumped into the ocean at Fukushima?

Below you can read the measurements taken (in Japanese)

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Geiger Counters - Radiation Detection Meters - Handheld Radiation Detector

When it comes to radiation detection meters you really have a wide field of gadgets to choose from, however radiation detectors are the most common to use. First of all if you need to know what type of radiation you are looking for. There are Alpha, Beta and Gamma radiation detectors. And also there is neutron emission of nuclear radiation. And all these different types of emissions have radiation detectors for a specific type of radiation that you can buy radiation detector for. Some also measure both Alpha and Beta. Others detect Alpha, Beta and Gamma. While others let you measure Beta and Gamma radiation.

What most people have use for though are Dosimeters you can buy a handheld radiation detector pretty cheap that are good addition to a survival kit. There are different kinds that you can use that will detect radiation. There are radiation badges that will tell you when radiation become high. Workers at nuclear power plants use these to inform them of how much radiation they have been exposed to. Now also children in the Fukushima prefecture have each been given a radiation badge so they know if they are exposed to radiation. Some come in the shape of a pen that you can carry in your pocket while other are made more compact so that you can attach them to your keychain. And then you have what is called a personal radiation monitor. These are also called Dosimeters and also normally called Geiger counters. Although not all use the Geiger-Muller Tube for the radiation detection some use a semiconductor instead. These and mostly the older geiger counters seen are pretty big to carry around, so they might not be best suited for a survival situation where you only need to carry the most important things. However if you have land and want to check radiation around the property and drinking water then these are the geiger counters to get because they are very well built units.

These are the once that you normally see people use. They have different units of radiation detection, because when it comes to radiation there are many standards used. some give the measurements in Rads, while other use Sieverts. Some have the maximum radiation value for the measured radioactivity quite low but they will still give you an idea of the amount of radiation in the area. With the units ranging from between background radiation 0.001 mSv/hr all the way up to 10 Sv/h. Normally a dosimeter will measure radiation in micro siverts per hour. If you were to walk into one of the reactor units at the Fukushima Daiichi Nuclear Plant you probably would get an error reading from your dosimeter because the radiation levels are so high there.

Note that some places outside the exclusion zone in Fukushima that are too radioactive for people to live in have areas where the radiation levels are above 30 Sv/h. So if you are in a area that have high radiation the radiation detectors would also there go off the scale. However Geiger counters or radiation detectors are still favored as general purpose alpha/beta/gamma portable radiation detectors and radiation detection equipment, due to their low cost and robustness. Most come with an LCD Display that show you the radioactivity in the area. Nowdays you will even get alarm sound and the possibility to connect the device to a computer. Either with a Infrared, Bluetooth or USB connection.

So if you look at the radiation detectors for sale that have this, then these radiation detection meters will allow you to make maps of contaminated areas that show where the radiation is high and low. This also will help you to see which areas are becoming more contaminated over time. With several nuclear reactors in the US and around the world located near fault zones that makes it a danger if a big earthquake would hit the area there is always a good choice to have a radiation dosimeter avaliable. I'm sure many in Fukushima would have been grateful to have dosimeters avaliable at the time of the disaster and I am sure you to would be grateful to have a geiger counter handy when you need one.