Excerpt on Radiation from IAEA Briefing on Fukushima Nuclear Accident (4 April 2011, 12:15 UTC)

Gamma dose rates are monitored in all prefectures continuously. Since 23rd March, reported gamma dose rates in the 45 prefectures have decreased. On 4th April the IAEA monitoring team made measurements at 7 locations at distances of 30 to 41 km South and Southwest of the Fukushima nuclear power plant. The dose rates ranged from 0.7 to 12.5 microsievert per hour. At the same locations, results of beta-gamma contamination measurements ranged from 0.1 to 2.0 megabecquerel per square metre. Since our written briefing of 1st April 2011, significant data related to food contamination was reported on 1st April (33 samples), 2nd April (64 samples) and 3rd April (37 samples) by the Japanese Ministry of Health, Labour and Welfare. These reported analytical results covered a total of 134 samples taken on 15 March (2 samples), 29-31 March (77 samples) and 1st - 2nd April (55 samples) ...Zum vollständigen Artikel

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