"Most of the reactors in Japan were designed by US companies who did not care for the effects of earthquakes,"
As an Engineer I call bullshit on this.
As an Engineer I call bullshit on this.
If I recall correctly, the engineering team's concerns about fail-safes in the event of a loss of electrical power were overruled or dismissed.
This is a region of a country where tectonic activity is significant enough that seaside villages are cutoff from the sea by 15 foot reinforced walls.
A reactor with the failure characteristics of the Fukushima reactors sound like the wrong tool for the job to me.