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Originally posted by 12voltz
What help do they need? Ideas ,cash,man power?
ideas are free ,so open a forum dedicated to suggestions and have someone sort through and contemplate each one ,no matter how bizarre and out of the box they may be
cash? there is plenty of that around ,the problem is the returns for some may be generational ,probably not many takers
Man power ? how many would sacrifice themselves for the good of the planet? ( the silence would be deafening) by creating a human shield around the smouldering pile soaking up the rads with good intentions
Help may come when its in your face on the media everyday but its obviously not that important .
drill a shaft for a Nuke to be lowered underneath the Fukushima nuclear reactor ruins
set off the nuke and create a huge cavern and fuse all the fuel rods and run-away reactor cores into a mass of stuff that cannot leak radioactive water into the ocean
Originally posted by ipsedixit
Doing this properly will help us deal with the next one. There will be a next one.]
It is not possible to place anything in between the atoms in a puddle of molten metal; that's why the reaction cannot be stopped.
In Japan, this chain reaction stopped at the time of the earthquake, when the reactors shut down as a safety response. But nuclear fission produces such enormous amounts of heat that it takes a long time for the reactor core to cool. Plus, the fissile material keeps giving off what’s called “decay heat” as it continues to emit radiation. Right after shutdown, a nuclear reactor is still producing large amounts of heat, so you’ve got a pretty big job keeping the whole thing cool.
If the core melts down then the reaction does stop because the critical geometrical relationship between the fuel rods is broken, the reaction can not sustain.
Most types of light water reactors (like the BWRs in Japan) use water to not only cool the reactor, but to also slow down neutrons. In these systems, slower neutrons cause the majority of fission reactions. Therefore, if the water boils off, neutrons will not slow down as much and the probability of fission reactions and power decreases, thus putting the nuclear system in a subcritical state.
If water heats up and vaporizes in a BWR reactor or spent fuel pool without cooling, the temperature increase of the water and eventual vaporization of water will tend to place the system in a subcritical condition. There are also large amounts of boron in these systems such as the control rods of the reactor, and various kinds of boron in the spent fuel pools. Additionally, steel structures supporting the spent fuel in the pool are sometimes made out of borated steel, which also contains large amount of boron. Even if the fuel does melt, the new geometric configuration will likely not be favorable for slowing down neutrons, so re-criticality is unlikely, even if water should be reintroduced to the system.
Originally posted by GaryN
reply to post by TheRedneck
What is criticality?
Most types of light water reactors (like the BWRs in Japan) use water to not only cool the reactor, but to also slow down neutrons. In these systems, slower neutrons cause the majority of fission reactions. Therefore, if the water boils off, neutrons will not slow down as much and the probability of fission reactions and power decreases, thus putting the nuclear system in a subcritical state.
If water heats up and vaporizes in a BWR reactor or spent fuel pool without cooling, the temperature increase of the water and eventual vaporization of water will tend to place the system in a subcritical condition. There are also large amounts of boron in these systems such as the control rods of the reactor, and various kinds of boron in the spent fuel pools. Additionally, steel structures supporting the spent fuel in the pool are sometimes made out of borated steel, which also contains large amount of boron. Even if the fuel does melt, the new geometric configuration will likely not be favorable for slowing down neutrons, so re-criticality is unlikely, even if water should be reintroduced to the system.
mitnse.com...
So it would have been better with Fukushima to let them melt down fully and get it over with in a few months? There was no need to evacuate anyone other than those within a short distance of Chernobyl, just as there was no need to evacuate Fukishima, but maybe the Japanese have a societal fear of even the word 'radiation' after what the USA did to them during the war, but there is NO scientific basis to the over-reaction to these events that is the cause of 99.999% of all the suffering of the evacuated residents. In chernobyl it was Vodka that cause most of the health and social problems as a rumour started that Vodka protected you from radiation. Not a good thing to tell the east European population who seem to drink more Vodka than I drink tea, even before the meltdown. The evacuation also of course caused much emotional stress and suffering, adding to negative health effects.
Dr. Alexander Borovoi went into the Chernobyl reactor building in late 1986, just a few months after the meltdown, and took photos from close up, and got right up to the corium in order to collect samples. He is still alive and perfectly healthy. There are people who create melt-downs in laboratory tests on purpose to see what the corium can do, and yes it can melt through cement and steel while hot enough, but when it cools they can pick it up, no danger. The worst case scientific calculations have determined that the molten core would go no further than about 2 feet into the reactor base as the mixing in of cement and steel and the zircon fuel rod cladding would result in a poisoning of the reaction, making it go sub-critical.
Originally posted by OmegaSynthesis
Send all the murderers, paedophiles, rapists, who are sentenced for life in to grab them rods to atone for their sins.
While they're at it, send in the ceo's of bp and the oil tycoonists and all the other assholes that dared to aim a gun right at earths heart.edit on 23-8-2013 by OmegaSynthesis because: (no reason given)
Originally posted by GaryN
reply to post by BobAthome
I'm confused. She died from radium exposure, but they still use radium as a cancer cure.
Look it up.