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On 12 May, TEPCO engineers confirmed that a meltdown occurred, with molten fuel having fallen to the bottom of the reactor's pressure vessel, or RPV. [40] The utility said that fuel rods of the No. 1 reactor are fully exposed, with the water level 1 meter (3.3 feet) below the base of the fuel assembly.
At the time of the quake, Reactor 4 had been de-fueled while 5 and 6 were in the cold shutdown for planned maintenance. [8] Immediately after the earthquake, the remaining reactors 1-3 shut down automatically, and emergency generators came online to control electronics and coolant systems.
The Fukushima disaster cleanup is an ongoing attempt to limit radioactive contamination from the three nuclear reactors involved in the Fukushima Daiichi nuclear disaster that followed the earthquake and tsunami on 11 March 2011. The affected reactors were adjacent to one another and accident management was made much more difficult because of ...
At 2:46 p.m. — the time when the earthquake struck — people across Japan stopped to observe a minute of silence. In Tokyo’s central Ginza shopping district, people stopped to pray on the ...
Japan began pumping more than a million metric tons of treated radioactive water from the destroyed Fukushima Daiichi nuclear power plant on Thursday, a process that will take decades to complete.
The high level meant that by 15 March the Fukushima plant accident had already reached the worst level 7 on the International Nuclear and Radiological Event Scale, matching the assessment given to the 1986 Chernobyl nuclear disaster. [174] Since that time the Fukushima reactors have continued to emit radiation; including atmospheric, water, and ...
The Fukushima nuclear accident was a major nuclear accident at the Fukushima Daiichi Nuclear Power Plant in Ōkuma, Fukushima, Japan, which began on 11 March 2011. The proximate cause of the accident was the 2011 Tōhoku earthquake and tsunami , which resulted in electrical grid failure and damaged nearly all of the power plant's backup energy ...
At Japan's wrecked Fukushima nuclear plant workers in protective suits are still removing radioactive material from reactors. Reuters was given exclusive access to the site, where nine years ago ...