Originally posted by Chamberf=6
I get the Fukushima thing to a point.
But it seems everyone forgets that the US A repeatedly dropped nuclear bombs on the Bikini Atoll and water was obviously contaminated then.
Short memories, or it doesn't count if the US did it?
In some ways you are right, however, in an atomic or nuclear blast, most of the fuel is consumed and its energy liberated in an instant. While the
'residual' radiation from those explosions remains, its not going to grow any worse because there is no 'engine' driving it. (Engine is not the best
One of the reasons Tschernobyl is less of a disaster, is that the core did melt and break out of its containment. As it did so, it accumulated other
materials into its mass, those materials eventually reached a point where they started to negate the fission chain reaction, dropping the heat needed
to sustain fission. While the 'Elephants Foot' (their nickname for the corium) is still dangerously radioactive, it's not going to spontaneously
However, TEPCO's meltdowns are water cooled (1&2) which means that should they lose water going onto the melted cores, it's likely that the the
fission reaction would resume with a vengeance. As for reactor #3, my best guess is that part of a fuel rod or chunks of it, may reside in the guts
of the reaction chamber or cooling torus, and that the recent steam events seen there are likely caused by those chucks getting close enough to
initiate fission. (micro-meltdown)
I can see one or two possible solutions for reactors #1 & #2, one of which revolves around deliberately initiating the meltdown and allowing it to
bleed down into a prepared mixture of sand, lead, steel, titanium, aluminum, and boron in order to deliberately create an 'Elephants foot.' (Followed
The other involves a massive effort to drain the water table and in the process of such, back fill the basements and tunnels with real cement and then
once all the leaks are filled and stopped via the cement, work to ensuring the cooling of 1 & 2 continues and that redundant systems are built to
ensure continued cooling.
One other possibility is to fill the reactor chambers & torus' of 1&2 with powdered boron, lead, sand and aluminum as a watery slurry, and allowing
the reactor to reheat such that those materials act as a top down plug when the corium mass exits as a new elephants foot, also would act as a cap for
Reactor #3- empty the spent fuel storage pool, then bulldoze and entomb it.
Storage pool #4, Empty it post haste, entombing it may not be necessary, but prudent in any case.
The other mess is getting the large spent fuel cool pool, (not far from #4) emptied and drained/ sealed.
Ideally the path to to undertake this should be:
1- Combined storage pool emptied.
2- #4 Cooling pool emptied.
3- #3 Cooling pool emptied, remaining structure bulldozed and entombed.
4- #1 & 2 cooling pools emptied.
5- #1 forced into meltdown and rendered 'inert' via an 'elephant foot' process.
6- #2 same as #1
7- Entombment of 1 & 2 should be planned for completion at the same time. As to reduce continued exposure of clean up crews.
8- Long term containment process and life time decontamination process of the site and region would continue.
I've sent many a long hour brainstorming on this mess, sorry if its wordy.
edit on 8-8-2013 by Moshpet because: (no reason given)