Technical Briefing on the Radiological Situation in Japan, 20 March 2011

Technical Briefing on theRadiological Situation in Japan
20 March 2011

Gamma dose rates (microSievert per hour)

Data source location for nuclide-specific measurements

Airborne concentration in Tokyo 15-19 March 2011, Bq/m3
http://www.sangyo-rodo.metro.tokyo.jp/whats-new/measurement.html

Airborne concentrations
Average air concentration, 15-19 March, Bq/m3
***http://www.jcac.or.jp/lib/senryo_lib/taiki_kouka.pdf
*KEK | High energy accelerator research organization
**http://www.sangyo-rodo.metro.tokyo.jp/whats-new/measurement.html

Radionuclides in foodstuffs and water, reported byJapanese Ministry of Health and Well-fare
6
City of Kawamata, 46 km to Fukushima power plant
3 Measurements in milk

7
Ibaraki prefecture
3 measurements in leafy vegetables

8
46 Measurements in drinking water

JOINT FAO/WHO CODEX ALIMENTARIUS COMMISSION
GUIDELINE LEVELS FOR RADIONUCLIDES IN FOODS
TRADED INTERNATIONALLY (CODEX STANDARD 193-1995)
www.codexalimentarius.net
* When intended for use as such.
** This represents the value for organically bound sulphur.
*** This represents the value for organically bound tritium.
Scope: The Guideline Levels apply to radionuclides contained in foods destined for human consumption and traded internationally, which have been contaminated following a nuclear or radiological emergency. These guideline levels apply to food after reconstitution or as prepared for consumption, i.e., not to dried or concentrated foods, and are based on an intervention exemption level of 1 mSv in a year.

Exposure pathways
10

The transfer of radionuclides to plants
1Deposition on leaves and fruit (if fruits are present)
2 Deposition onto soil und uptake by plants through the roots
1
1
2

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Technical Briefing on the Radiological Situation in Japan, 20 March 2011

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