Siemens Smart Chopper Electric Motorcycle - Page 3

 


The initial Yucca mountain specs were talking about
IIRC, 10,000 years. That might work out to one or two
hundred meters or so of subduction movement. Not very
useful.

What kind of timeframes did you have in mind ?
If longer than 10,000 years,  what do you do for the
first few tens of thousands of years while you wait
for subduction to move your waste material ?

 

Rob Kleinschmidt wrote:

It's around a kilometer, and that is _half_ of the half-life of plutonium.


The same thing you do for the remaining millions of years.  What do you
think is going to happen to radioactive waste sitting on the bottom of a
deep ocean trench that requires that one "do something"?

 


The requirement that one "do something" comes before it is deposited
on the ocean floor. Considering man's ability to screw up virtually
everything he does, it's not unlikely that the containers he puts the
waste in will fail at some point. Look up "thermohaline circulation"
and you'll see that the water on the ocean floor comes to the surface
and moves around the globe in a never-ending cycle. The bottom of the
ocean ain't as remote as many think.

 


1 km = 100 000 centimeters = 10 cm/yr = ~4 inches of
motion/yearly, which is a very extreme amount of motion.
Still not very useful for the first few millenia.


My point being that "rapid subduction" is total bullshit.
The described solution is really "dump it in the ocean
and forget about it and maybe in a few thousand years
it'll go away".

 


It's also assuming there is no corrosion or leakage. That water at the
bottom of the ocean doesn't just sit there. There are deep sea
currents and all the world's water is continually moving around the
world, from top to bottom.