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Friday, November 22, 2013

Fukushima 100.000 Times More Cesium-137 Than Chernobyl

Radioisotopes in the Pacific Ocean. What's There? How Much? How Long?

The release of radioisotopes from the Fukushima Dai-ichi nuclear disaster in March 2011 amounts to the largest ever accidental release of radiation into the ocean. The explosions initially released radioisotopes in the form of iodine-131, cesium-134 and cesium-137 from the reactors. All of these Nobel isotopes cause health problems.

In the weeks after Fukushima nuclear disaster, Ken Buesseler a marine chemist at Woods Hole Oceanographic Institution, organized an expedition with scientists from different fields and institutions to investigate radioisotopes from the damaged nuclear plant that ended up in the ocean and marine life. They used nets to sample organisms and instruments to collect more than 1,500 water samples in 30 locations off Japan. Water and biological samples were sent to 16 labs in seven countries to detect levels of a variety of radioisotopes. The concentrations measured in early April 2011 were all the more alarming.

In June 2011, Buesseler led a quickly organized expedition aboard the research vessel Ka' imikai-o-Kanaloa that took a comprehensive look at the fate of the Fukushima radiation both in the open ocean and in marine life. Beginning 600 kilometers offshore and coming within 30 kilometers of the crippled nuclear plant, the research team sailed a sawtooth pattern, gathering water samples from as deep as 1,000 meters, and collecting samples of phytoplankton, zooplankton, and small fish. They also released two dozen drifters to track currents. These instruments move with to ocean currents over months and report their positions via satellite. Like their Japanese colleagues, Buesseler's team measured elevated levels of both cesium-137 and the telltale cesium-134 in the water they collected.

Read about the whole expedition here [PDF Format]

 

Please also note that the report here have excluded 296.100 tons of radioactive reactor water that have leaked into the Pacific Ocean since this disaster began at the amount of 300-400 tons per day and which continue to leak to this very day.  

 

So 100.000 times more Cesium-137 reported is on the LOW SIDE.

Fukushima Released 100.000 Times more Cesium-137 Into Surface Ocean Waters Than Chernobyl or Nuclear Weapons Testing
Fukushima Released 100.000 Times more Cesium-137 Than Chernobyl or Nuclear Weapons Testing
The Ocean is Dead Because of Fukushima
The Ocean is Dead Because of Fukushima

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☢ [IMAGE] The Ocean Is Dead Because of Fukushima ☢

 

at 11:40 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.

Fukushima

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