How do we dismantle nuclear power plants, once they are through their life cycle, WITHOUT fossil fuels?

Until this question is answered I dismiss nuclear power as viable.

I would think with electrical tools / equipment fueled (ultimately) by nuclear energy.  Since the power plant was hooked to the grid to begin with, I think you would have sufficient power available at the facility you're tearing down.
Did you even read the piece Paulus?  It was posted five minutes before you commented, or did you just want to get in here and preempt a decent and more intelligent discussion?

If you mean to ask the question, "how do we dismantle nuclear power plants with fossil fuels that will be increasing in expense and decreasing in availability over time?" (we're not going to be without fossil fuel for a while, or don't you read the site much?)...well, I think that's a much more apt question.

Furthermore, Prof. G., on the world scale the use of hydrocarbon fuels for dismantling nuclear reactors is incredibly tiny. It's so tiny that even if we ran out of fossil fuels we could easily manage the reactor disposal problem with biodiesel for the relatively small amount of hydrocarbon liquid fuels needed for such activities. Biodiesel won't scale to replace our current lifestyle but if we need only a few tens of million of barrels per year, we can easily produce that, and in a sustainable manner too.
PG, GZ, I couldn't agree with you more. Nuclear is clearly one of the several available solutions to peak oil. Pessimists will be pessimists even in the face of this. It is a good piece. We have every reason to be positive over the long term.
Dear Prof. Goose,

I read this site much, and clearly understand we won't be running out of FF anytime soon, or ever, maybe. I did read the piece and am open to a discussion on nuclear power. I apologise if my comment suggests otherwise.

However:
By no means it is clear that what are now the major population centers that at present consume a lot of energy and which are the locations for future nuclear power plants, will have access to any FF in 60 years time.
Despite suggestions that we will have the equipment for mining , processing and transporting minerals for nuclear power plants, and the equipment to decommission these, all running on electricity, this underlying infrastructure is nowhere in place as far as I can tell. This will require a complete redesign, replacement, and extension of all present machinery used for these processes. Keep in mind that if we intend to get a good part of our electricity from nuclear power, we need to build many more stations then we have now.
I have also trouble with the costs that are mentioned. First, estimating now the costs of building a plant that will take several years to have completed is guaranteed to overrun the proposed budget.
Second, calculating 15 cts. per KwH for decommission costs 60 years from now is based on todays' economics and thus hard for me to see how it can apply to a situation so far ahead (though obviously something should be calculated).
Third, in calculating the costs for a nuclear power plant it is asumed the underlying infrastructure, i.e. the electrical grid to transmit the generated electricity, is in place. It is now, but it's old and vulnerable already. I think the grid needs some serious upgrading if men is to switch to more electric power (be it nuclear or otherwise) and less FF. All in all the economics seem a bit doubtfull.

Finally, the waste. There probably are ways to deal with this. Clearly stuff with a half life of thousands of years should be put away properly, and not like here in Holland at http://www.covra-nv.nl , which is at sealevel. Despite all the protective measures eventually these will wear out.

Nuclear power will probably stay part of an energymix if we intend to peacefully and gradually powerdown, but it has no future in the long run, and frankly, I feel it is a bit like playing God.

Wait ~100 years for induced radioactivity to decline 99.9+%.

Use hydro, wind or solar generated power to melt down steel & other metal into metal that is not exposed to people (concrete rebar comes to mind).  Use air jack-hammers to break-up concrete and use for roadbeds or other "scrap concrete" use.

IMHO, "once through" fuel rods will be retrieved from storage after a century or two and refined/reprocessed for their platinum group metals (plus gold, silver, germanium, etc.).

The degree of employee health safety measures might be excellent in 2138, or they may not be.

The high grade steel (and copper) of old nukes would be ideal for certain parts of wind turbines, geothermal power plants and hydro power plants (all with limited human contact).

What to do with the zirconium though ? (Nuke fuel rods are often built of zirconium from memory).

The neat thing about zirconium is that it is still just zirconium afterward. It doesn't tend to absorb neutrons, and that's why they use tubing made from it to contain the fuel elements.
Convert to zirconium oxide and use for SOFC membranes.
  1. Use power from other powerplants to convert zinc oxide into zinc metal.
  2. Power mobile demolition equipment using zinc-air fuel cells (pneumatic gear like jackhammers can use compressors running off power from the mains).

Simple enough for you?

um, using electricity? How about producing hydrogen with the nuclear power and then making methanol from that?

This is the most tired argument around... "The  CEO's limo runs on gas, therefore without gas the CEO can't show up to work, therefore nuclear power isn't viable without gas...."

The solutions are entirely obvious. Only willful ignorance would make it otherwise.