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On 24 May 2012, more than a year after the disaster, TEPCO released their estimate of radiation releases due to the Fukushima Daiichi Nuclear Disaster. An estimated 538,100 terabecquerels (TBq) of iodine-131, caesium-134 and caesium-137 was released. 520,000 TBq was released into the atmosphere between 12 to 31 March 2011 and 18,100 TBq into the ocean from 26 March to 30 September 2011. A total of 511,000 TBq of iodine-131 was released into both the atmosphere and the ocean, 13,500 TBq of caesium-134 and 13,600 TBq of caesium-137. In May 2012, TEPCO reported that at least 900 PBq had been released “into the atmosphere in March last year [2011] alone up from previous estimates of 360-370 PBq total.

In a leaked TEPCO report dated June 2011, it was revealed that plutonium-238, −239, −240, and −241 were released “to the air” from the site during the first 100 hours after the earthquake, the total amount of plutonium said to be 120 billion becquerels (120 GBq) — perhaps as much as 50 grams. The same paper mentioned a release of 7.6 trillion becquerels of neptunium-239 – about 1 milligram. As neptunium-239 decays, it becomes plutonium-239. TEPCO made this report for a press conference on 6 June, but according to Mochizuki of the Fukushima Diary website, the media knew and “kept concealing the risk for 7 months and kept people exposed”.

Source: http://en.wikipedia.org/wiki/Radiation_effects_from_the_Fukushima_Daiichi_nuclear_disaster

Fukushima radiation underestimated by five times

February 10th, 2014 | Posted by spoadmin in Fukushima - (Comments Off)

TEPCO has revised the readings on the radioactivity levels at the Fukushima No. 1 nuclear plant well to 5 million becquerels of strontium per liter – both a record, and nearly five times higher than the original reading of 900,000 becquerels per liter.

Strontium-90 is a radioactive isotope of strontium produced by nuclear fission with a half-life of 28.8 years. The legal standard for strontium emissions is 30 becquerels per liter. Exposure to strontium-90 can cause bone cancer, cancer of nearby tissues, and leukemia.

Tokyo Electric Power Co. originally said that the said 900,000 becquerels of beta-ray sources per liter, including strontium – were measured in the water sampled on July 5 last year.

However, the company noted on Friday that the previous radioactivity levels had been wrong, meaning that it was also likely reading taken from the other wells at the disaster-struck plant prior to September were also likely to have been inaccurate, the Asahi Shimbum newspaper reported.

Source: http://rt.com/news/fukushima-radiation-levels-underestimated-143/

AFP Photo / IAEA


www.strike-the-root.com/fukushimas-radioactive-ocean-plume-to-reach-

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International Help Required

December 31st, 2013 | Posted by spoadmin in Solution - (Comments Off)

Crippled Fukushima Daiichi nuclear plant needs international help

www.scmp.com/…/crippled-fukushima-daiichi-nuclear-plant-needs-internat…

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phys.org/news/2013-10-tonnes-radioactive-fukushima.html

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