
© unknownMap showing location of the Kashiwazaki-Kariwa plant
I had warned that a major earthquake would strike the Chuetsu region around Kashiwazaki, Niigata Prefecture, and about the fundamental vulnerability of nuclear power plants.
The 6.8 magnitude temblor of July 16 caused considerable damage to the Kashiwazaki-Kariwa Nuclear Power plant operated by Tokyo Electric Power Co. (TEPCO), proving me right.
In the 40 years that Japan had been building nuclear plants, seismic activity was, fortunately or unfortunately, relatively quiet. Not a single nuclear facility was struck by a big quake. The government, along with the power industry and the academic community, all developed the habit of underestimating the potential risks posed by major quakes.
Since around the time of the Great Hanshin Earthquake that devastated Kobe in 1995, however, almost the entire Japanese archipelago has entered a period of brisk seismic activity.
In the past two years, major quakes took place in close proximity of three nuclear power plants: the Onagawa plant in Miyagi Prefecture (August 2005), the Shika plant in Ishikawa Prefecture (March 2007) and the Kashiwazaki-Kariwa plant. In each case, the maximum ground motion caused by the quake was stronger than the seismic design criteria for the nuclear power plants. The latest temblor near Kashiwazaki generated a peak ground acceleration of 993 gal, compared with the design value of 450 gal.
Comment: As major earth changes threaten the entire planet, the only thing our psychopathic leaders can think of is more war. How long will a ceasefire be allowed to stand?