Latest Dose Levels within Fukushima Daiichi
It is two years and seven months after the great natural disaster of an M9.0 earthquake and tsunamis of March 11, 2011. But the Fukushima Daiichi nuclear plant accident is yet to be fully fixed since they cannot still find specifically where melted-down nuclear fuel is now under the three crippled nuclear reactors in the plant.
Cooling water is still being circulated through the crippled reactors. But as those reactors and reactor buildings are broken radioactively contaminated water leaks into the ground under the reactor buildings. They pumped out contaminated and leaked water into special tanks but some of it apparently flows into the sea.
Now let's see how much dosage people are now receiving in major cities north of Tokyo on Honsyu Island, since Fukushima Daiichi is situated 220 km northeast of Tokyo.
Dose Levels as of October 18, 2013
City Dose (uSv/hour)
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Morioka 0.023
Sendai 0.048
Fukushima 0.31
Utsunomiya 0.044
Mito 0.044
Saitama 0.041
Ichihara (Chiba) 0.031
Shinjuku (Tokyo) 0.035
Chigasaki (Kanagawa) 0.040
Specifically within Fukushima Prefecture where the Fukushima Daiichi plant is situated:
Dose Levels as of October 18, 2013
City/Town/Village Dose (uSv/hour)
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Fukushima 0.31
Iidate 0.66
Minami-soma 0.14
Namie 2.38
Koriyama 0.16
Aizuwakamatsu 0.07
Iwaki 0.08
For example, the dosage in Fukushima City 0.31 uSv means 2.7 mSv per year. The Japanese Government sets the allowable radiation limit for primary school children at 20 mSv with a standard target of 1 mSv. So, it is not very safe for children living around Fukushima City, some 70 km west of the Fukushima Daiichi plant.
Recently a Japanese reporter visited Chernobyl to measure a radiation level around the broken nuclear power plant covered by huge concrete walls and slabs. A measurement device showed 5.24 uSv. But at two special locations in the Fukushima Daiichi plant, they measured 1800 mSv per hour in this summer.
So, Fukushima Daiichi is still the most dangerous place in Japan, though about 3000 workers are engaged in recover work every day in the premises of the plant.
Latest Dose Levels within Fukushima Daiichi Plant (by Tokyo Electric Power Co.)
http://www.tepco.co.jp/nu/fukushima-np/f1/index-j.htmlMeasurement was done at eight locations named PM-1 to PM-8.
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