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PostPosted: Apr 28, 2015 3:26 pm 
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http://www.theengineer.co.uk/news/us-to ... 81.article

If it's truly waste, and not valuable fuel, then this seems like a sensible strategy for disposing of waste, 5km underground.

One of the problems with waste disposal, is that, even if provably safe, locals don't like it. This technique could be used in really remote locations where there are no locals - like St Kilda or Bikini Atoll (though the latter might be regarded as provocative).

I think there was a mention here of borehole disposal. This article talks about solid waste: "Firstly, the waste would be slowly lowered down the hole in metal containers."

I wonder whether it would be better to granulate the waste and use fracking technology to pump it kilometres underground. With directional drilling one site could handle unlimited amounts of waste. Although nuclear waste and fracking is a rather provocative combination.


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PostPosted: Apr 28, 2015 10:42 pm 
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Most of the reactors are being built in China, India, Russia and Korea which all believe a closed cycle. They have to temporarily store it till it is reprocessed to utilise all the actinides present in the used fuel. Fission products and cladding and accessories are the real waste. The last are best stored in boreholes.


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PostPosted: Apr 29, 2015 12:39 pm 
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jagdish wrote:
Most of the reactors are being built in China, India, Russia and Korea which all believe a closed cycle. They have to temporarily store it till it is reprocessed to utilise all the actinides present in the used fuel. Fission products and cladding and accessories are the real waste. The last are best stored in boreholes.
The cladding, maybe. But the FPs can be seperated into stable and active portions and only the active should be DEEP sixed.

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DRJ : Engineer - NAVSEA : (Retired)


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PostPosted: Apr 29, 2015 1:32 pm 
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The cladding is typically zircalloy.

ZrF4 could be useful in MSRs.

PS. Dolf -- a message for you: viewtopic.php?p=62018#p62018


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PostPosted: May 01, 2015 5:05 am 
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If you can handle it remotely, it can be used as ZrF4 salt or even recycled as metal!


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