Toshiba Builds Ultra-Small Nuclear Reactor 683
DeusExCalamus writes "Toshiba has developed a new class of micro size Nuclear Reactors that is designed to power individual apartment buildings or city blocks. The new reactor, which is only 20 feet by 6 feet, could change everything for small remote communities, small businesses or even a group of neighbors who are fed up with the power companies and want more control over their energy needs."
Yup (Score:5, Insightful)
Self contained (Score:4, Insightful)
Re:A slogan (Score:3, Insightful)
Re:Lifetime cost (Score:3, Insightful)
Re:A slogan (Score:5, Insightful)
Re:Good thing I am not a kid anymore (Score:1, Insightful)
Re:Eh... (Score:2, Insightful)
There are two possible explanations for why middle eastern nations might want nuclear technology. One is that they want to blow us up. The other is that there are vast areas of their counties that don't have electricity. We accuse them of wanting to destroy the planet and we're the ones who ordered 300 new coal plants this year, knowing that industrial coal is the single largest contributer to greenhouse emissions. We should be helping Iran build nuclear power plants, not encouraging them to keep burning oil for power when peak oil and global warming are looming in the future.
Re:A slogan (Score:5, Insightful)
If you took all the toxins, etc., from coal and condensed them on one place, the greens would have a fit no matter where you tried to bury it.
Besides, did you turn YOUR air conditioner off last summer?
Anyway, this will never fly in the US - I can guarantee that the big utilities will lobby congress and FUD it to death.
Moon or mars (Score:3, Insightful)
Re:Eh... (Score:4, Insightful)
Are you kidding? (Score:5, Insightful)
Gee, I guess I'll be selling all my extra power to the grid.
I love it when someone from Arizona tells me that solar power is going to solve all my power problems here in northern New Hampshire.
Re:A slogan (Score:5, Insightful)
Depends how you define "clean" - hydro power is usually environmentally quite damaging. Tidal power can also be quite damaging if done inappropriately (I'll point at the proposed Severn Tidal Barrage as an example of how do do a lot of damage to the environment through harnessing the tides). Thermal solar based systems are probably pretty clean, but photovoltaic systems use quite a lot of rather nasty chemicals in their manufacture which must be handled carefully (kind of like fission products in fact...)
Re:Eh... (Score:2, Insightful)
Oh wait
Re:A slogan (Score:4, Insightful)
I think on of the biggest problems with the environmental movement (or at least their PR) is that they seem more than happy to pursue perfect solutions at the expense of good solutions.
Re:Lifetime cost (Score:3, Insightful)
Re:Thanks, but I'll settle for Solar Power and sav (Score:3, Insightful)
Temperatures this past summer held in the mid nineties with 80% humidity. Winters can be just as brutal with lows near zero and winds gusting to fifty. You are going to find very tough to lower your power consumption "by an order of magnitude" under those conditions. There are no easy or obvious alternatives for the neighborhood, the nursing home, the single family residence.
Re:A slogan (Score:5, Insightful)
Not necessarily. I've seen reports that some geothermal plants are plagued with stuff like sulfer and heavy metal releases.
If you're in a spot where the Earth is conducive to it, the technology has been licked.
Then you use it where it makes sense. Meanwhile what are the rest of us in the world supposed to use?
Oh, and it's not in your post, but hydroelectric(Dams) actually do have some rather serious enviromental concerns [bbc.co.uk]...
Re:A slogan (Score:3, Insightful)
Whether or not these are *greener* is open to debate. They all have serious consequences as well. Some eat of land, removing it from its natural form and use. Some flood large areas of land, again destroying its natural use, and destroying the original aquatic use. They all modify the area in which they are used. Geothermal is probably the one with the least known consequences of all, but I am not holding my breath once we start dealing with leaks in a geothermal system at its lowest points. There is already some evidence that geothermal systems may be related to seismic issues.
So, nuclear has a radioactivity issue. So does sunlight, microwave ovens, televisions, coal burning, X-Rays, and many more items/activities in daily life. The radioactive portion of the nuclear fuel system is not that scary. Where we put it and what we do with it afterwards is the real issue. Chernobyl and other incidents are all based on very large designs that were not well thought through or not managed correctly. And, for all the damage they have done, they have not done as much damage as a coal fired plant will in its life time.
As it seems to be with almost everything, moderation in use of many different types (used where they are the *best* local solution) seems to be key.
InnerWeb
The radical change of Slashdot (Score:5, Insightful)
Now, it's all, nuclear is bad, nuclear is evil because "The terrorists might get it".
Listen to yourselves. You've eaten the terrorist propaganda the government has been feeding you, AND YOU LOVE IT.
"We can't do this because it might help the terrorists."
"Yeah, that's cool, but what about the terrorists?"
"If it weren't for terrorists, this would be awesome."
George Bush loves you guys, he's got you on his side and you don't even realize it.
Re:A slogan (Score:5, Insightful)
I agree entirely. Although the other problem seems to be that they take a solution that might be more or less perfect, given perfect conditions/location and push it so hard they end up putting it in conditions/locations where it either doesn't work or causes a lot of damage. I'm all for installing in "renewable" power generation systems where appropriate, but I also recognise that they are often not appropriate and that fission is a pretty good solution (with appropriate handling and reprocessing facilities for the spent fuel).
Also, whilst I can forgive the general public for overreacting based on misinformation (e.g. the "nuclear is bad" attitude caused by its association with nuclear weapons, Chernobyl, etc.), it seems that the big environmental groups who attract the media's attention are often just as badly informed. For example, Greenpeace is opposed to ITER and other fusion research, stating that it is dangerous, a waste of money and that it should be spent on renewables instead. So they seem to not want research into a technology that could producer cleaner (although not completely clean) energy. Yes, we may never get useful power out of fusion reactors, but we won't know until we try - I for one am hopeful.
Re:Eh... (Score:3, Insightful)
They may view it as a loss of sovereignty regarding power generation. My guess is that Iran, as a member of OPEC, is well-aware of what can go wrong when you depend upon other countries for energy.
Or nukes. Obviously, MAD is just effective now as during the cold war.
Re:Fuel (Score:2, Insightful)
Following the external links in the wikipedia article, you can find that this reactor is still fueled by uranium, although it is in a metal alloy form. That's in contrast with the typical ceramics (uranium dioxide) which is used in most light water reactors in the world. We do have experience with metallic fuels, but not nearly as much as with UO_2.
One other unique aspect of this reactor: it uses liquid sodium for cooling. Most light water reactors use water, not surprisingly, as their moderator and coolant. People have experimented with liquid sodium as a coolant in the past, and are continuing to research advanced "Generation IV" reactors which could use liquid sodium. I believe the main challenges in doing something like this is not the nuclear design (figuring out how many neutrons are needed) but mitigating practical issues such as corrosion.
About the lithium, the article says that it is used for control purposes. In other words, the lithium is absorbing neutrons, while the fuel is producing them.
Re:Are you kidding? (Score:2, Insightful)
When everyone in Arizona gets solar power (and feeds the excess back to the grid) there will be more energy total avaliable that you get get from the grid.
Re:Where we live ... (Score:2, Insightful)
If you replace cut trees with new ones, as is the case is most of Europe, and probably other places too, then a part of this CO2 is spent on growing new trees, so the effect is far less damaging than coal.
Re:Where we live ... (Score:3, Insightful)
The only way to use trees for carbon sequestration is to cut them down and build houses out of them. Seems like you should earn carbon credits when you buy lumber.
Re:Where we live ... (Score:3, Insightful)
Wrong. If you burn the trees, the patch of land they grew on is now empty, so more trees will grow there, sucking up the CO2 you released from burning the previous patch. On the other hand, if you burn coal, the land is still occupied by the trees, and doesn't have room for more, so the CO2 isn't going to be reabsorbed.
Yes, and the uptake differs in these two cases.
Nuclear Even Better For Non-electric Uses (Score:5, Insightful)
I once worked for a company that designed an intrinsically safe urban reactor designed to make hot water. We had convinced the city of Helsinki to buy it and were within hours of signing the contract when the Chernobyl Reactor accident occurred. Helsinki would have used it as a district heating plant big enough to heat all the buildings in the city.
Nuclear reactors are much better at making hot water than they are at making electricity. Heating is a major consumer of energy in many locations. Therefore, replacing a fossil fuel heat source with a nuclear heat source is more beneficial to the environment than replacing an electric power generator. There are other applications, aluminum smelting for example, that need copious quantities of heat, not electricity per se.
Re:Where we live ... (Score:4, Insightful)
Re:The radical change of Slashdot (Score:3, Insightful)
Re:A slogan (Score:2, Insightful)
Perhaps it wasn't your intent, but that smells like FUD.
With references: http://en.wikipedia.org/wiki/Geothermal_energy#Disadvantages [wikipedia.org]
I side with the OP - definitely not worth arguing about.
(Yes, worth being aware of tho.)
-Matt
Radioactive material issue (Score:3, Insightful)
One could make a logical argument regarding the true danger posed by a dirty bomb, but the US Government seems to have completely abandoned logic as a basis for any of their actions.
The Islamists of the Middle East, who have the largest share of the world oil reserves, seem to have conveniently made it very difficult to get approval for their main energy competitor. In the end we may come to understand that their objective is financial rather than ideological.
Re:Self contained (Score:2, Insightful)
I sincerely hope you're joking...but I know many aren't.
Since when does Greenpeace have terror campaigns? Hanging banners from buildings and bridges, running weenie dinghies around motherf*cker-sized warships, disrupting whaling, fishing and toxic waste dumping, all without violence? That's terror?
I've known since 9/11 that before long the word terror will come to include ANYTHING at all that involves protest or resistance, peaceful or otherwise, and even political or ideological difference, but do you have to encourage it?
Re:Where we live ... (Score:2, Insightful)
Re:Mostly ridiculous article (Score:3, Insightful)
The terrorist scenario has played out in Russia and it's a non-issue.