[ RadSafe ] Ongoing Criticalities Inside Leaking Fukushima Daiichi Unit 2

[Doug Huffman]

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A definition of criticality, a practical one that I used to determine
criticality, was "a constant positive change in neutron population
(Start Up Rate) with no reactivity addition."  Subcritical
multiplication and spontaneous fission might explain "fresh" I-131 but
the whole spectrum of fission fragmants should be present and as
detectable.

On 5/1/2011 07:20, Ahmad Al-Ani wrote:
> TEPCO Data Shows Ongoing Criticalities Inside Leaking Fukushima Daiichi Unit 2
> April 28, 2011
> Analysis by: GLG Expert Contributor
> 
> Data released on April 28, 2011 by TEPCO is now unequivocal in showing ongoing criticalities at Unit 2, with a peak on April 13. TEPCO graphs of radioactivity-versus-time in water under each of the six reactors show an ongoing nuclear chain reaction creating high levels of "fresh" I-131 in Unit 2, the same reactor pressure vessel (RPV) with a leak path to reactor floor, aux building, and outdoor trenches, that is uncontrollably leaking high levels of I-131, Cs-134, Cs-137 into the Pacific Ocean.
> 
> Source:
> http://tinyurl.com/663j24z
> 
> TEPCO Data:
> http://tinyurl.com/5sz375o
> 
> Can the experts on the RADSAFE list comment on this analysis, please.
> 
> Ahmad Al-Ani
> Radiation Physicist
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