[ RadSafe ] Fwd: [New post] Fukushima nuclear decommissioners have no ...

JPreisig at aol.com JPreisig at aol.com
Mon Apr 6 11:07:35 CDT 2015

     Thanks.  If it is cooled, it still is  probably going to stay in 
place.  What are the Japanese going to do --- cut  the cooled core up with 
chainsaws or some high-tech gizmo and move it  somewhere?  Imagine the dose 
equivalent rates for such a task.  No  thank you.
     Joe Preisig
In a message dated 4/6/2015 12:01:32 P.M. Eastern Daylight Time,  
JOHN.RICH at sargentlundy.com writes:

ANS  5-1-2005 "Decay Heat Power" seems to indicate that at this late date 
the  total thermal power is about 1% of the initial operating power. I'm  
guessing its not molten anymore, but a heat transfer calc would have to be  
done to confirm that the heat conduction from the core surroundings is  
sufficient to keep the corium below its melting point. Wikipedia indicates  
corium melts around 1200 deg C.  Somebody has to have gone through  this 
exercise, and maybe we can get a response from a heat transfer  specialist. 
But its probable that the core is hot, but solid.

Pls  fell free to correct this or add to it.  It's just a first  
approximation with a lot of unknowns - -jmr

John  Rich
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