On Thu, 27 Apr 2006, Peter wrote:

> Mark Scoville <mscoville <at> unicontrolinc.com> writes:
>
>>
>> Chernobyl tragedy - April 26, 1986 - 20 years ago today... Has it been that
>> long?
>>
>> http://news.bbc.co.uk/1/hi/in_depth/europe/2006/chernobyl/default.stm
>
> I was curious what that 'lava-like' stuff was. So I found this:
>
> http://www.rri.kyoto-u.ac.jp/NSRG/reports/kr79/kr79pdf/Pavlovych.pdf

Just in case I was not clear: The paper suggests that the puddles of 
vitrified fuel 'lava' and materials under the reactor can go critical if 
they get wet. In fact, they apparently may have done that twice already 
according to graphs in that paper.

Peter
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