by Akio Matsumura
This article is available in Japanese and German.
The highly radioactive spent fuel assemblies at the Fukushima-Daiichi power plants present a clear threat to the people of Japan and the world. Reactor 4 and the nearby common spent fuel pool contain over 11,000 highly radioactive spent fuel assemblies, many of which are exposed to the open air. The cesium-137, the radioactive component contained in these assemblies, present at the site is 85 times larger than the amount released during the Chernobyl accident. Another magnitude 7.0 earthquake would jar them from their pool or stop the cooling water, which would lead to a nuclear fire and meltdown. The nuclear disaster that would result is beyond anything science has ever seen. Calling it a global catastrophe is no exaggeration.
If political leaders understand the situation and the potential catastrophe, I find it difficult to understand why they remain silent.
The following leaves little to question:
- Many scientists believe that it will be impossible to remove the 1,535 fuel assemblies in the pool of Reactor 4 within two or three years.
- Japanese scientists give a greater than 90 percent probability that an earthquake of at least 7.0 magnitude will occur in the next three years in the close vicinity of Fukushia-Daiichi.
- The crippled building of Reactor 4 will not stand through another strong earthquake.
- Japan and the TEPCO do not have adequate nuclear technology and experience to handle a disaster of such proportions alone.
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