If you visit the Alice Pavilion at the Shika nuclear power plant in the town of Shika, Ishikawa Prefecture, you will be happily entertained by Prof. Aomushi (Blue Caterpillar), who, water pipe in mouth, sits in the sun and, together with Alice, "teaches you about radiation."

What these friendly cartoon characters will not teach you, though, are facts about the geological fault that, in all likelihood, is active under the plant's No. 1 reactor.

The government gave Hokuriku Electric Power Co. — the plant's owner and operator — the go-ahead to start construction in 1988, "after (the company's) underground surveys did not detect any active faults." The No. 1 reactor was commissioned in 1993, and a second reactor went on line in 2006.