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The government's 20 mSv/a target led to the resignation of Toshiso Kosako, Special Adviser on radiation safety issues to Japanese Prime Minister Naoto Kan, who stated "I cannot allow this as a scholar", and argued that the target is too high, especially for children; he also criticized the increased limit for plant workers. [217]
The Industrial Safety and Health Law on the prevention of health damage through ionizing radiation had set the limit for accumulated radiation dosage in radiation management zones at 1.3 millisieverts over three months, so the maximum level is 2.6 microsieverts/hour. In both dorms, the radiation levels were higher.
Due to frustration with TEPCO and the Japanese government "providing differing, confusing, and at times contradictory, information on critical health issues" [89] a citizen's group called "Safecast" recorded detailed radiation level data in Japan [90] [91] using off-the-shelf Geiger counter equipment.
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.
Radiation levels in Japan are continuously monitored in a number of locations, and a large number stream their data to the internet. Some of these locations are mandated by law for nuclear power plants and other nuclear facilities.
Radiation dose rates during the initial hydrogen explosions. The Asahi Shimbun newspaper reported on 26 March that the accident might warrant Level 6, based on its calculations. [46] The Wall Street Journal stated that Japan's NISA would make any decision on raising the level. [47]
The Japanese expert panel "ALPS subcommittee", chaired by nuclear scientist Ichiro Yamamoto, released a report in January 2020 which calculated that discharging all the water to the sea in one year would cause a radiation dose of 0.81 microsieverts to the locals, therefore it is negligible as compared to the Japanese' natural radiation of 2,100 ...
On 19 March 2011, Indonesia began screening passengers and luggage on direct flights from Japan for radiation. No radiation has been detected. [80] On 16 March, Swedish citizens were advised to avoid staying within 80 km of the Fukushima nuclear power plants, and all travel to Japan was advised against.