It's a 40 year old plant with a 50 year old design that was done before Plate Tectonics and subduction zones were accepted theories. (ca late 60's for those theories)

And, despite fudged safety records, losing all cooling power, and having a 9.0 quake and a 12 m tsunami hit it, it still hasn't killed anyone. That's pretty good. It's bad that it's going to cost billions of dollars to secure, but in the scope of the overall disaster, it's a small percentage.

In 20 years, there's a good chance that people will be saying "I can't believe that they kept building gas and coal plants, look at what it's done to the environment."