Chernobyl involved an intense fire without provision for containment, and Fukushima Daiichi severely tested the containment, allowing some release of radioactivity.
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3, the company said, in what it called its worst-case scenario analysis, saying the fuel would be sitting at the bottom of the pressure vessel in each reactor building.īut Tokyo Electric at the same time released a second possible scenario for reactors 2 and 3, one that estimated a full meltdown did not occur. The same thing happened within the first 60 hours at reactor No. 2 may have melted and fallen to the bottom of the pressure vessel 101 hours after the earthquake and tsunami that crippled the plant, Tokyo Electric said May 24. The remnants of that core are now sitting in the bottom of the reactor pressure vessel at the heart of the unit and that vessel is now believed to be leaking.Ī "major part" of the fuel rods in reactor No. 1 melted almost completely in the first 16 hours after the disaster struck. It had already said fuel rods at the heart of reactor No. The plant's owner, Tokyo Electric Power Co., admitted last month that nuclear fuel rods in reactors 2 and 3 probably melted during the first week of the nuclear crisis. Reactors 1, 2 and 3 experienced a full meltdown, it said.
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The announcement will not change plans for how to stabilize the Fukushima Daiichi plant, the agency said.
The nuclear group's new evaluation, released Monday, goes further than previous statements in describing the extent of the damage caused by an earthquake and tsunami on March 11. Tokyo (CNN) - Japan's Fukushima Daiichi nuclear power plant experienced full meltdowns at three reactors in the wake of an earthquake and tsunami in March, the country's Nuclear Emergency Response Headquarters said Monday. The Fukushima Daiichi plant was badly affected by an earthquake and tsunami in March.Japan's nuclear emergency agency goes further in describing the extent of damage.