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« Current status of evacuation areas near Fukushima Daiichi nuclear power plant | Main | 65 food samples analyzed in December and January violate Japanese provisional radiation contamination limits »
Tuesday
Jan312012

Fukushima Daiichi still releasing radioactive cesium to air

On page 3 of its December 22, 2011 "Fukushima Daiichi Status Report," the International Atomic Energy Agency (which depends on Japanese federal government agencies as well as Tokyo Electric Power Company for its information, so is assuming those vested interests are being honest and accurate) reported that:

"Air sampling is still being used to determine the current release rates from each reactor Unit. The current caesium release rate from Unit 1, 2 and 3 is estimated to be 0.01 billion Bq/h, 0.01 billion Bq/h and 0.04 billion Bq/h respectively. The total release rate of caesium is 0.06 billion Bq/h which is 1/13000000 at the time of the accident. [Note: this is the same release rate as in the previous month]." (page 3)

A becquerel (Bq) is defined as a unit of radioactivity measurement equal to one disintegration per second. As reported above, 60 million Bq per hour of radioactive cesium alone (not accounting for other radioactive poisons) is still escaping into the air from the Fukushima Daiichi nuclear power plants Units 1 to 3 (radioactivity releases from Unit 4's damaged high-level radioactive waste storage pool is also not accounted for). As stated, radiation release rates at the time of the accident" beginning on March 11, 2011 were 13 million times higher than current radiation release rates -- in other words, 780 trillion (780,000,000,000,000) Bq per hour of radioactive cesium alone.

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