Radiological Monitoring and Consequences of Fukushima Nuclear Accident (2 June 2011)

Fukushima Nuclear AccidentRadiological Monitoring and Consequences 2 June 2011

Gamma Dose Rate in 47 Prefectures on 31 May Fukushima prefecture: 1.5 µSv/h

Gamma Dose Rates in 7 Prefectures 24 March – 31 MayNatural background: 0.1 microSievert/hour

Gamma dose rate in the East of Fukushima prefecture

Concentration in air of I‐131 and Cs‐137 detectedat Fukushima Daiichi West Gate (at a distance of 1 Km to NPPs)

Deposition of I‐131 and Cs‐137 in 47 prefectures• I‐131 – Not detected since 18 May• Cs‐137 – Detected in a few prefectures over a few days – Low levels ranging from 2.2 to 91 Bq/m2

Protective actions • Drinking water: All restriction lifted • The Government of Japan has announced evacuation measures: – Beyond distances of 30 km from Fukushima Nuclear Power Plants – NISA: evacuation of the “Planned Evacuation Zones” within Iitate village and Kawamata town commenced on 15 May.

Food Monitoring and Food Restrictions (Reported 19 – 31 May)• 818 samples from 18 prefectures• Over 40% of monitoring is in Fukushima prefecture• Over 93% of samples indicated Cs‐134 /Cs‐137 or I‐131 were not detected or were below the Japanese regulation values• Less than 7% were above the Japanese regulation values for Cs‐134 /Cs‐137 and/or I‐131• Restrictions on the distribution and/or consumption of specific foods in certain areas of Fukushima and Ibaraki prefectures remain in place

350 Total number of food samples tested between 19 and 31 May 2011 300 300 250Number of samples Neg 200 Cs-total Cs-total & I-131 150 116 100 77 55 50 39 36 33 32 28 22 18 11 9 9 9 6 4 4 2 2 2 2 1 1 0 Prefecture

20 Food samples above the regulation values between 19 and 31 May 2011 18 16 Cs-total 14 Cs-total & I-131Number of samples 12 12 10 10 8 7 6 4 4 3 3 2 2 2 2 2 2 1 1 1 0 Prefecture / Date of sampling

20 Food samples above the regulation values between 19 and 31 May 2011 18 16 Cs-total 16 Cs-total & I-131 14Number of samples 12 10 10 9 8 6 6 5 4 2 2 1 1 1 1 0 Chiba / tea Fukushima / Fukushima / Fukushima / Fukushima / Fukushima / Fukushima / Gunma / tea Ibaraki / tea Tochigi / tea Algae Fishery Fruit Mushroom tea Tree / products perennial plant shoots Prefecture / food type

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Radiological Monitoring and Consequences of Fukushima Nuclear Accident (2 June 2011)

by International Atomic Energy Agency

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