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Saturday, September 17, 2011

144,200 Becquerels Cesium Found in Burned Industrial Waste

(Mainichi Japan) September 16, 2011

Excessive cesium found in burned industrial waste in 3 prefs.

In this March 12, 2011 image made from video from NTV Japan via APTN, smoke rises from the Unit 1 reactor building at the Fukushima No. 1 Nuclear Power Plant in Okuma, Fukushima Prefecture. (AP Photo/NTV Japan via APTN)
In this March 12, 2011 image made from video from NTV Japan via APTN, smoke rises from the Unit 1 reactor building at the Fukushima No. 1 Nuclear Power Plant in Okuma, Fukushima Prefecture. (AP Photo/NTV Japan via APTN)
TOKYO (Kyodo) -- Radioactive cesium in excess of the benchmark of 8,000 becquerels per kilogram was discovered in ashes and dust from industrial waste incinerators in six locations in Iwate, Fukushima and Chiba prefectures, the Environment Ministry said Thursday.
Among 110 industrial waste disposal facilities covered as samples in 16 prefectures in eastern and northeastern Japan, the cesium reading stood at 10,800 to 144,200 becquerels at four in Fukushima, 23,000 becquerels at one in Iwate and 11,500 becquerels at one in Chiba, it said.
A similar study found in late August that ashes from nonindustrial incinerators were polluted with over 8,000 becquerels of cesium per kg in Tokyo and six prefectures. A worker exposed daily to 8,000 becquerels of cesium would still not exceed the annual radiation exposure limit of 1 millisievert.
At the end of August, the ministry decided to get local authorities to solidify with cement incinerated dust and ashes containing 8,000 to 100,000 becquerels of cesium per kg and cover them with watertight sheeting before they are buried in the ground.
In this photo taken Friday, April 15, 2011, Japanese police officers in protective suits carry a victim in a tsunami-devastated area in the town of Namie, as the towers of the crippled Fukushima Dai-ichi nuclear power plant are seen in the distance at top right in Fukushima Prefecture, northeastern Japan. (AP Photo/Hiro Komae)
In this photo taken Friday, April 15, 2011, Japanese police officers in protective suits carry a victim in a tsunami-devastated area in the town of Namie, as the towers of the crippled Fukushima Dai-ichi nuclear power plant are seen in the distance at top right in Fukushima Prefecture, northeastern Japan. (AP Photo/Hiro Komae)
As for those with more than 100,000 becquerels, the ministry made it possible to bury them after the level of cesium falls below the mark by solidifying them with cement. 
It earlier decided to allow those containing up to 8,000 becquerels to be buried in waste disposal sites only if residential houses are not built there in the future.
at 8:55 AM 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.

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