Re: Can hydrogen deliver?

From: Tim O'Flaherty (pinwheels_Fudge__at_gwi.net)
Date: 10/31/04 

Date: Sun, 31 Oct 2004 07:45:57 -0500

"Richard Bell" <rlbell@csclub.uwaterloo.ca> wrote in message
news:clv7md$jv2$2@rumours.uwaterloo.ca...
> In article <_q2dnTaqTYAXeR3cRVn-pw@gwi.net>,
> Tim O'Flaherty <pinwheels_Fudge_@gwi.net> wrote:
> >
> >"Franz Heymann" wrote
> >
> ><Snip>
> >
> >..... without reprocessing we have an
> >> ever
> >> > growing pile of spent fuel, 2000 tons per year currently, 25,000
> >> tons per
> >> > year for the 100 quads energy the US currently uses if we go all
> >> nuke, as
> >> > has been suggested to wean us from carbon fuel.
> >>
> >> That is only a few boat loads per annum to deliver the stuff to a
> >> suitable subduction zone. That's mere chicken feed.
> >
> >In a century that's a quarter million tons from the US alone, and only
spent
> >fuel. Once you open the door we can expect this solution to be used for
> >other classes of rad waste.
> >
> > This conveyer belt to the mantle isn't moving all that fast so merely
> >dumping it and forgetting it seems shortsighted to me. Every year the
pile
> >waiting at the "entrance" will be more. Rather than getting rid of it we
end
> >up with a deep sea repository that we can't access or, if we can access
it,
> >one that will require constant monitoring .
> >
> >Expensive chickenfeed even if the downpayment is nil.
> >
> >Regards,
> >Tim O
> >
> The US navy was unable to locate the wreck of the USS Thresher with the
> help of radiation sensors.

Not encouraging if we need to retrieve or otherwise check on the status of
this stuff.
>
> The entrances to the subduction zones are not small, but areas of tens of
> thousands of square kilometers. There is also more than one of them. A
> quarter of a million tonnes can be a single boatload (bulk carriers are
already
> nearly that large). The stuff will not actually form a pile, unless we
> expressly try to make one.
>

So we spread it around, still more and more every year, bottom line - not
sustainable.

Regards,
Tim O

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