Number 1 reactor melted down and created a hole in the bottom of the pressure vessel

Tokyo Electric Power Company will have to review its plan for stabilizing the Fukushima Daiichi nuclear facility after a large amount of radioactive water was found in the basement of one of its reactor buildings.

The utility says it discovered an estimated 3,000 tons of contaminated water in the basement of the damaged Number 1 reactor building.

TEPCO says fuel rods in the Number 1 reactor melted down and created a hole in the bottom of the pressure vessel. It says the containment vessel also appears to be damaged and highly radioactive water has leaked into the basement of the building.

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