Technical Briefing on the Radiological Situation in Japan, 19 March 2011
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Technical Briefing on the Radiological Situation in Japan, 19 March 2011

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Technical Briefing on the Radiological Situation in Japan, 19 March 2011 Presentation Transcript

  • 1. Technical Briefing on theRadiological Situation in Japan
    19th March 2011
  • 2. Gamma-dose rate in microSv/h in various Prefectures
    2
  • 3. Gamma dose rates
    3
  • 4. Information provided by MEXT
  • 5. Gamma dose rates near Tokai and Tokyo
    5
  • 6. Gamma-dose rate at Togichi, 140 km South West (microSv/h)
    Passage of the radioactive plume
    Resulting exposure pathways are
    • External exposure from the cloud
    • 7. Inhalation of contaminated air during the passage of the plume
    Background
    14 March
    16 March
    17 March
    15 March
  • 8. IAEA Environmental Measurements in Japan 19 March 2011 at public locations
  • 9. Recent IAEA Environmental Measurements in Japan 19 March 2011 at selected locations
    Location:  Hasuda (Saitama Prefecture), 25 km from Tokyo
    • Dose rate: 0.04 microSv/h
    • 10. Gross alpha count: 0 cps
    • 11. Gross beta and gamma count: 127 cps  
    Location:  Tamikochi  (Saitama Prefecture), 110 km from Tokyo
    • Dose rate: 0.18 microSv/h
    • 12. Gross alpha count: 0.2 cps
    • 13. Gross beta and gamma count: 240 cps
    Location: Nasugogem(Saitama Prefecture), 170 km from Tokyo
    • Dose rate: 2.9 microSv/h
    • 14. Gross alpha count: 0 cps
    • 15. Gross beta and gamma count: 2300 cps
  • 9
    Locations