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One analyses:

melted-control-rods

based on one TEPCO PDF:

http://www.tepco.co.jp/en/nu/fukushima-np/handouts/2017/images/handouts_170719_01-e.pdf

with kind regards,

From the Toys R Us at TEPCO HQ.

In the imagination of the people and in the graphics of so called experts the molten core exists as a whole. We should separate from this. And look again at reactor fuel assemblies.
These consist of SINGLE, very small fuel pellets, many of them.
The water level sank in March 2011, right? Individual pellets were affected one after the other, downwards. They began to change their aggregate state. They melted, yes,but they became even hotter, due to the nuclear reaction, and DISSOLVED, or in other words, easy to VENT.


TEPCO melted, vented, melted, vented. But the space is limited.


So the reactor housing /burst protection exploded. That’s when the particle version of the reactor finally became free, after days of venting tiny bits into the air.

A second important thing I would simply like to explain. Cooling. If you try to cool a cooking plate in your kitchen, which is at the highest level, with water, The water evaporates, leaves traces, and your whole kitchen will be full of steam.The cooking plate will continue to heat because it is operated electrically.The only chance is to switch it off.

Now, for the nuclear fuel: Once it exists, it makes reactions (well, this is some sort of analogy to the kitchen). Without cooling water, it becomes hotter and hotter. It reaches the melting temperature in 3 seconds. That’s when it is 2,800°C or 5,072°F hot. It is so hot, that any water immediately fizzles, not even coming anyway near it. This steam must also be vented out, in the pressure containment. You can’t switch it off, because it’s nuclear reaction depends on natural laws and not on electrics like your kitchen.

Fukushima Unit 3 Muon Scan Finds NO FUEL In Reactor Vessel: http://www.tepco.co.jp/en/nu/fukushima-np/handouts/2017/images/handouts_170727_01-e.pdf

 

There was no fuel found in Reactor 1
There was no fuel found in Reactor 2
There was no fuel found in Reactor 3

TEPCO about Reactor 1: “It is considered that there is no fuel debris or very little even if exist”: http://www.tepco.co.jp/en/nu/fukushima-np/handouts/2017/images/handouts_170727_02-e.pdf

TEPCO just downgraded (!) the radiation readings in Reactor 2 (they calculated estimates from visual “noise”!: http://www.tepco.co.jp/en/nu/fukushima-np/handouts/2017/images/handouts_170727_03-e.pdf

 

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妊娠中の日本人女性の避難すぐ

NOT A MELTDOWN NOT A MELT THROUGH! The violence of the explosion would have been massive, if they had not vented Reactor 2.

https://tekknorg.wordpress.com/2015/03/20/ejection-of-all-fuel-from-reactor-2-confirmed-by-speedi-and-jaec-in-2011/
The pressure building up in the building destroyed it then, also in Unit 1 and Unit 2, and probably Unit 3. Info by Japanese Atomic Energy Commission JAEC, May 24th 2011, 16th meeting: March 14th 6:22 pm – 2号機全燃料 露出 = Ejection of ALL fuel from Reactor 2, 6:22pm March 14 2011:

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