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A June 2012 Stanford University study estimated, using a linear no-threshold model, that the radioactivity release from the Fukushima Daiichi nuclear plant could cause 130 deaths from cancer globally (the lower bound for the estimate being 15 and the upper bound 1100) and 199 cancer cases in total (the lower bound being 24 and the upper bound ...
Despite caesium isotopic concentrations in the waters off Japan being 10 to 1000 times above the normal concentrations prior to the accident, radiation risks are below what is generally considered harmful to marine animals and human consumers. [155] Marine life has been tested for cesium and other radionuclides since the accident.
After the 2011 Tōhoku earthquake and tsunami of 11 March, the cooling systems for multiple reactors (units 1, 2, 3) and spent fuel cooling ponds (all 6 units and central pool) of the Fukushima I (Fukushima Dai-ichi) nuclear power plant were compromised due to damage from the tsunami.
The Tokaimura nuclear accidents refer to two nuclear related incidents near the village of Tōkai, Ibaraki Prefecture, Japan. The first accident occurred on 11 March 1997, producing an explosion after an experimental batch of solidified nuclear waste caught fire at the Power Reactor and Nuclear Fuel Development Corporation (PNC) radioactive ...
A magnitude 9.0 earthquake and tsunami on March 11, 2011, damaged the Fukushima Daiichi plant’s cooling systems, causing three of its reactors to meltdown, releasing radiation and driving ...
Japanese authorities admitted that lax standards and poor oversight contributed to the nuclear disaster. [3] The government came under fire for their handling of the emergency, including the slow release of data on areas which were likely to be exposed to the radioactive plume from the reactor, as well as the severity of the disaster.
Reactor water level indicators were reported to be showing minimum-possible values at 19:30 JST on 14 March. [14] Meanwhile, radiation dose rates measured at the gate of the plant (at 21:37 JST) reached a maximum of 3.13 m Sv/h, which was enough to reach the annual limit for non-nuclear workers in twenty minutes. [13]
On 25 March 2011, officials announced the reactor vessel might be breached and leaking radioactive material. High radiation levels from contaminated water prevented work. [53] Japan Nuclear and Industrial Safety Agency (NISA) reiterated concerns about a Unit 3 breach on 30 March. [54]