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Tepco engineers use concrete to seal leaks  (Source: TEPCO)
The top five feet of the core's 13 ft-long fuel rods had melted down after being exposed to the air

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RE: incorrect?
By SunTzu on 5/15/2011 12:45:54 PM , Rating: 2
No, the tsunami knocked out the backup generators, the earthquake knocked out the power, which lead to a loss of cooling.

RE: incorrect?
By semo on 5/15/2011 2:18:12 PM , Rating: 2
Well that's my point. There wouldn't be loss of cooling if the backup power generators weren't flooded.

The biggest problem they had initially was that there was no safe way of fixing the power supply without exposing workers to dangerous level of radiation.

If there was no tsunami, the backup generators would have provided enough power (probably) to cool the reactors which would have stopped radiation leaking and hampering efforts to bring the situation under control.

The point I'm trying to make is that the power station survived the earthquake, but not the tsunami. You can say that the earthquake caused the tsunami in the first place so it was the culprit ultimately.

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