Tokyo Electric Power Company and the Office of Nuclear and Industrial Safety in Japan from the beginning argued that the plant "Fukushima-1" withstood an earthquake of magnitude 9.0, occurred on March 11. According to them, has caused damage to the subsequent 15-meter wave. So were given prescriptions for only tsunami.
Katsuhiko Ishibashi, professor emeritus of Kobe University and one of the leading Japanese seismologists said, thus the country is at the brink of new nuclear disasters, because many of the older plants need to be checked on earthquake resistance, and it is not scheduled.
Mr. Ishibashi — the author of the term "genpatsu sinsay," that is, "a nuclear disaster caused by the earthquake," which he proposed in 1997. In 2006, he resigned from the government commission, which was supposed to monitor the plant ready for aftershocks, arguing that the experts underestimate the force of the impact of the earthquake on the foundation of buildings.
At a recent press conference at the Foreign Journalists' Club in Japan scholar said that Japan's nuclear power plants should be considered in a different light than their colleagues in other countries. "In Europe and the eastern U.S. earthquakes are rare, — said the expert. — And Japan has to push every tenth in the world, although the state has 0.3% of the Earth's surface. "
Nuclear power plant construction boom in Japan was in the 1960s and the first half of 1970. At that time, according to Mr. Ishibashi, seismology has not yet reached full maturity (as well as models of seismic faults and plate tectonics). Therefore, the location of Japanese nuclear power plants and the possible epicenters overlap.
The period of active nuclear power plant in Japan coincided with a relative lull in the fractures. As a result, says Mr. Ishibashi in the magazine "Asahi" stations are not checked for seismic resistance. The engineer simply had no experience.
What's worse, the Japanese archipelago seems entered the era of high seismic activity. It began with the devastating earthquake in Kobe in 1995. Since then there have been at least six aftershocks of magnitude 6.6 to 7.2, which exceeded the targets set out in the project documents the local nuclear power plant. For example, in July 2007, an earthquake of magnitude 6.8 has caused serious damage to all seven reactors' Kasivazaki-Kariwa "in Niigata.
That's why it's time to take immediate action. Of particular concern to scientists is old reactors General Electric Mark 1. Fukusimskie reactors one to five based on this model …