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Sunday, August 14, 2011

Best Radioactive Fallout Contamination Map NHK TV

NHK Special - Collaborating to Create a Radioactive Fallout Contamination Map

Kimura once worked for the National Institute of Radiological Sciences. He was on the research team for the Tokai Mura nuclear accident of 1999. He later transferred to a research center of the Ministry of Health Labour and Welfare. And went to Chernobyl to conduct his own investigation.

After the Fukushima accident he was ordered to refraim from initiating in any kind of research, Kimura left the agency. "After spending all this time involved with Chernobyl and Tokai Mura, to be prepared for this type of accident and not be able to use this research for feedback at least. My hands were tied, I wasn't permitted to do anything unless there were orders.

Kimura's research is supported by his friends who are scientists. Kimura took the samples he collected in Fukushima to be evaluated to Tetsuji Immanako of the Kyoto university research reactor institute.

The same samples were sent to Satoru Endo and Kiyoshi Shimizu at Hiroshima University.
"2.4 kilos is extremely strong"

At Nakasaki university, Toshihiro Takatsuji uses a leading edge device to help with measurements.
"Because the radiation amount is much highter than normal there seems to be an extended dead time"

Masaharu Okano expert and pioneer of radiation research has taken on a project to create a radioactive fallout contamination map using the most up to date measuring device that he developed himself.

What exactly was the extent of contamination caused by radiation from the Fukushima nuclear accident?

What is happening in the contaminated areas? This is a record of a two month survey conducted by scientists working close together.

In this documentary we really get to see how this disaster have affected the people. People that have lost everything, farmers that no longer can use their land. Dear pets forced to be left behind. We get to hear the words from the people forced to evacuate and leave everything. The once that are forced to stay, and have sent their children to saftey.

One such account:
"I used to work at that power plant when I was im my 30's. Then, everyone was exited about having a workplace. Now, after living like this... Everyday, when I go to sleep and when I get up the next day... I feel so empty and so angry. I hate TEPCO and the nuclear power plant so much. I don't mind if we don't have power or if it's dark at night. Just as long as we never have nuclear power.

Some levels measured by the team at 15:45min in:
4 km from Fukushima plant
Iodine-131 @ 166 million Bq/sq. meter
Cesium @ 21.2 million Bq/sq. meter

Iodine-131 half-life 8 days. Cesium 137 half-life 30 Years, Ceasium 134 half-life 2 Years.

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Another MUST SEE documentary is this one here about the Chernobyl nuclear disaster. 
☢ The Battle of Chernobyl - Best Documentary of the Nuclear Disaster of Chernobyl ☢
This is the best movie I have seen so far about the events in Chernobyl in 1986.
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at 2:47 PM Posted by JD
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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.

Fukushima

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