BERLIN (Kyodo) In the first severe accident at a Western-designed nuclear power plant since Three Mile Island, Japan is confronted by the specter of three reactors simultaneously running amok and melting down.

A partial meltdown at Three Mile Island happened three decades ago on the other side of the globe and Japan's memory of it was faint.

The nuclear industry provided assurance that steps had been taken to virtually exclude such an event happening again. The Chernobyl disaster didn't really dent that confidence because it was its unique design that triggered the explosion, and, unlike Japanese reactors, Chernobyl had no containment to hold back deadly radiation.