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Fukushima Nuclear Accident<br />Radiological Monitoring <br />and Consequences<br />5 May 2011<br />
Gamma Dose Rates in 7 Prefectures24 March – 4 May<br />Natural Background: 0.1 µSv/h<br />
Gamma Dose Rate in47 Prefectures- 4 May<br />Fukushima prefecture: 1.7 µSv/h <br />
Cs-137daily deposition (Bq /m2)15 April-2 May  <br />
I-131daily deposition (Bq /m2)15 April-2 May <br />
I-131 and Cs-137 Concentration in airat Fukushima Daiichi West Gate (1 Km from NPP)<br />
Monitoring of drinking water2 May<br />I-131 and Cs-137 detected in 2-6 prefectures respectively and remain far below rest...
Monitoring of public and workers<br />As of April 27: 175045 people had been screened (NISA)<br />Internal+ External doses...
<ul><li>2461 samples from 18 prefectures
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Radiological Monitoring and Consequences - 5 May 2011

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Radiological Monitoring and Consequences - 5 May 2011

  1. 1. Fukushima Nuclear Accident<br />Radiological Monitoring <br />and Consequences<br />5 May 2011<br />
  2. 2. Gamma Dose Rates in 7 Prefectures24 March – 4 May<br />Natural Background: 0.1 µSv/h<br />
  3. 3. Gamma Dose Rate in47 Prefectures- 4 May<br />Fukushima prefecture: 1.7 µSv/h <br />
  4. 4. Cs-137daily deposition (Bq /m2)15 April-2 May <br />
  5. 5. I-131daily deposition (Bq /m2)15 April-2 May <br />
  6. 6. I-131 and Cs-137 Concentration in airat Fukushima Daiichi West Gate (1 Km from NPP)<br />
  7. 7. Monitoring of drinking water2 May<br />I-131 and Cs-137 detected in 2-6 prefectures respectively and remain far below restriction levels in all 47 prefectures. <br />Recommendations for restrictions for infants based on I-131: Still in place in 1 village of Fukushima prefecture as precautionary measure. <br />
  8. 8. Monitoring of public and workers<br />As of April 27: 175045 people had been screened (NISA)<br />Internal+ External doses received by emergency workers until the end of March 2011 (TEPCO):<br />2 workers: 200-250 mSv.<br />8 workers: 150-200 mSv<br />11 workers: 100-150 mSv. <br />Other workers: below 100 mSv.<br />
  9. 9. <ul><li>2461 samples from 18 prefectures
  10. 10. 2239 samples (91%): below the regulation values
  11. 11. 222 samples (9 %): above the regulation values – mainly vegetables: From 6 prefectures (Chiba, Fukushima, Gunma, Ibaraki, Tochigi, Tokyo)</li>

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