The Fukushima Daiichi nuclear disaster occurred on March 11, 2011, after a devastating tsunami triggered by the magnitude 9.0 earthquake engulfed the nuclear plant. Some reactors' coolant systems failed which resulted in multiple hydrogen-air chemical explosions. Three of the plant’s six nuclear reactors melted down and radiation leaked into the atmosphere, soil and sea.
The incident was called the world’s worst nuclear disaster since the 1986 Chernobyl catastrophe.
Cleaning the toxic waste from the abandoned nuclear plant and reactors decommissioning have become TEPCO’s principal task.
Seawater radioactivity levels on the West coast of North America resulting from cesium-137 and other radioactive materials spilled into the Pacific Ocean by Japan's crippled Fukushima nuclear plant are expected to peak in 2015, a report by US oceanographers has revealed.
Despite thousands accusing TEPCO of negligence in preventing the nuclear accident, the company's former chairman and two vice presidents may avoid prosecution, a source has claimed.
Radiation from the Fukushima nuclear incident may be the reason for four cases of thyroid cancer detected in children in the local area.
The mutations in around one third of the Fukushima butterflies were detected in the first few months following the disaster, including smaller wings and assymetrical antennae.
TEPCO vice president said that some 166,000 Fukushima evacuees claimed provisional compensation. By the end of November, 3,713 of them have not yet applied for full compensation.
In April, TEPCO started experimentally freezing the highly contaminated water accumulated in the underground tunnels of the plant to prevent it from pouring into the ocean.
Most of the workers at the Fukushima Dai-ichi plant are devoted to dealing with the contaminated water, a mixture of groundwater running into recycled water that leaks after being pumped into the reactors. While only a tiny group of the workers are charged with key tasks.
TEPCO has been spraying a special liquid inside the Fukushima protective cover, which would prevent radioactive dust and debris from leaking from the dome, since late October.
First power plant since the 2011 Fukushima disaster to be restored in the Japanese city of Satsumasendai, local authorities said Tuesday.
A part of the dome's roof about three to six feet was torn off when TEPCO staff has been inserting a special substance into the Fukushima protective cover to prevent radioactive dust and debris from getting outside the dome.