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[100] [193] Experts said exposure to this amount of radiation for 6 to 7 hours would result in absorption of the maximum level considered safe for one year. [193] On 16 March Japan's ministry of science measured radiation levels of up to 330 μSv/h 20 kilometers northwest of the power plant. [ 194 ]
In February 2018, Japan renewed the export of fish caught off Fukushima's nearshore zone. According to prefecture officials, no seafood had been found with radiation levels exceeding Japan safety standards since April 2015. In 2018, Thailand was the first country to receive a shipment of fresh fish from Japan's Fukushima prefecture. [163]
The Radiation Effects Research Foundation (RERF) is a joint U.S.-Japan research organization responsible for studying the medical effects of radiation and associated diseases in humans for the welfare of the survivors and all humankind. [1] The organization's scientific laboratories are located in Hiroshima and Nagasaki, Japan.
The University of Hiroshima University did establish a leading research center into the effects of radiation on the human body and health: the Research Institute for Radiation, Biology and Medicine, due to decades lasting studies after the effects on local population, that survived the atomic-explosion of Hiroshima in 1945. [187]
The Soviet Union conducted 456 nuclear tests at Semipalatinsk from 1949 until 1989 with little regard for their effect on the local people or environment. The full impact of radiation exposure was hidden for many years by Soviet authorities and has only come to light since the test site closed in 1991. [59] 2007 ISO radioactivity danger symbol ...
The health risks in the WHO assessment attributable to the Fukushima radioactivity release were calculated by largely applying the conservative Linear no-threshold model of radiation exposure, a model that assumes even the smallest amount of radiation exposure will cause a negative health effect.
The three technicians measured significantly higher levels of radiation than the measurement designated the maximum allowable dose (50 mSv) for Japanese nuclear workers. [20] Many employees of the company and local population suffered accidental radiation exposure exceeding safe levels.
As a result, Japan has committed to diluting the water in order to bring levels of tritium below the regulatory standards set by the International Atomic Energy Agency. The International Atomic Energy Agency has stated that the plan meets safety standards, but critics contend that more studies need to be done and the release should be halted.