We can yap about technology but it's all out of our hands. Nuclear fission has 
taken permanent hit because of its cost$. It's not safety that halted uranium, 
but money. In a darwinian fashion, natural gas has superseded  uranium, from a 
cost-price ratio. Could fission or solar re-take the hill top any time soon? 
Will fusion ever be there? Don't know, and since I have no power to influence, 
don't care.



-----Original Message-----
From: John Clark <[email protected]>
To: everything-list <[email protected]>
Sent: Sat, Mar 21, 2015 11:22 am
Subject: Re: TEPCO admits Fukushima Daiichi Unit 1 core completely melted down


 
  
  
   
   
On Fri, Mar 20, 2015 at 7:55 PM, meekerdb     <[email protected]> wrote:   
   
    
    
      
              
        
         
> Reactors are either water cooled or air cooled.  Graphite is used as a 
> moderator to slow the neutrons and increase fission          
         
        
       
     
    
    
     
    
    
I know that.    
    
     
    
    
 > not as a coolant.    
    
     
    
    
Slowing the neutrons is also called cooling them.    
    
     
    
     
  > Heavy water is used as a combined coolant and moderator in some reactors.   
   
     
    
    
     
    
    
And so is Helium and liquid sodium.    
    
     
    
    
  John K Clark    
    
     
    
    
     
    
    
     
   
  
 
  
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