Yep, Corium is a delicious mixture of nuclear fuel, zircaloy cladding, containment vessel wall, concrete and a sprinkle of control rod for taste..

Think of it as a molten blob of white hot metal that is self-heating.. It sometimes flows into pipes and other container like structures under the pull of gravity due to it's multi-tonne weight. After Chernobyl was encased in it's new building.. the team drilled into the reactor vessel itself to ascertain the condition of the nuclear fuel.. to their surprise they found none.. turns out it flowed into the basement and into the thousands of pipes and channels present in the RBMK design. This was credited with the sharp and unexplained drop in radiation during the later part of the Battle of Chernobyl.

The problem with Corium is that it is uncontrollable.. and if it comes in contact with a good moderator, and has the right geometry, it can undergo prompt criticality(rapid self sustaining nuclear reaction) and even explode. In both Chernobyl and Fukushima, there have been theories that prompt criticality occurred.

In Chernobyl, when the steam voids (areas where the coolant has been allowed to become super heated, you get a massive power increase) and because the Soviet RBMK reactor design uses a graphite moderated channel type deign (think of hundreds of small nuclear reactors all combined into one very big core for RBMK) it was still critical when the water was reduced. In all but the RBMK and the sodium reactor (nuclear subs and experimental systems) the moderator is water, so if it forms steam voids (bubbles or pockets of steam instead of water) the lack of moderation retards the reaction. In the soviet design, this was not the case and moderation continues even with water removed. As the reaction increased, it made more steam, which produced more power and so on..

This is called a positive feed back loop and what was unknown to the operators at the time was the RBMK design had a high positive void coefficient problem. When the operators noticed the huge spike in power, they scrammed the plant (S.C.R.A.M= Safety Cut Axe Man, to emergency stop and insert all rods to stop the reaction) It had an unintended effect. When the rods inserted, they displaced even more coolant in the channels and caused a massive increase in thermal power, exactly opposite of what they expected, and the control rods had graphite tips providing additional moderation. The first reports from the IAEA had stated that the explosion was caused by steam pressure alone, but the amount of force was so great that it blew a 2000 tonne concrete and steel bio-shield lid vertically into the air. Uncontrolled, prompt criticality can certainly generate the gigawatts of thermal energy (yes, it was measured in the control room as that high) needed for this level of kinetic thrust. Thus, the details for Chernobyl may now include criticality excursions in the timeline.

Prompt criticality excursions are the main reason why the gun-type design of the little boy design atomic bomb was rejected in favor of the implosion design. The chance that problems with the high explosive or purity of the physics package could cause the bomb to fizzle instead of go super critical was a deal breaker, even though it was the much easier to construct and design.

Spontainous prompt criticality is a major issue, and the reason why proper geometry (actual physical shape of cast materials) is so important, in Corium, you loose control of everything, including shape and moderation.

[link to en.wikipedia.org]

[link to skitamura.sakura.ne.jp]

Forward to Japan,

There are many key indicators that do not pass the smell test for me.

1)Reported problems with the plant BEFORE the wave hit. (Stuxnet?)

2)4 Reactors building explosions, but only three reactors were fueled? Why was there an explosion in the offline plant? Official story stated that hydrogen from the other building. Modern plants like the GE Mark I have hermetically sealed containment buildings and controls for the remaining structure as well, ambient gasses to not just pass freely, even to the superficial structure housing the containment.

So why did the offline plant explode? The theory I subscribe to the most is prompt criticality from uncovered fuel in the spent fuel pool. So take please take note of this when officials tell you that nuclear plants can not and will not explode.. they can and have on both a large (Chernobyl and possibly Fukushima) and small scale (Sodium reactor test bed outside LA)

3)Neutron beams observed. (indicator of ongoing fission, and thus risk of more prompt criticality)

With Corium there is no control of geometry or reaction at all.. you get what you get, and if the conditions are right, you can get a big blast and lots of fission products released. The results of which would look a lot like what Perth is showing you.. not an earthquake, but a short pulse like an explosion. The super-heating of the surrounding ocean also indicates that the corium has reached the water table and we now have a bona fide "China Syndrome" underway.

The only thing missing would be the massive radiation increase and or steam-vents, if its under water (a moderator) then perhaps that explains the west coast die-offs and high strangeness.

Anyhow, sorry for the long post, I've tried my best to break down what he is getting at for those who are not familiar with the processes and terminology.. hope it has helped.

Thanks!

If you don's quite understand, wikipedia has more then you ever wanted to know, please start there...

On Chernobyl:

[link to en.wikipedia.org]

[link to en.wikipedia.org]

[link to en.wikipedia.org]

On Nuclear power:

[link to en.wikipedia.org]

[link to en.wikipedia.org]

[link to en.wikipedia.org]