1 / 8

Oleg Nasvit National Institute for Strategic Studies, Ukraine

R egulation of foodstuffs contaminated with radioactive substances after the Chornobyl NPP Accident. Oleg Nasvit National Institute for Strategic Studies, Ukraine. R egulation of foodstuffs contaminated with radioactive substances after the Chornobyl NPP accident , Bq/kg(l).

senta
Download Presentation

Oleg Nasvit National Institute for Strategic Studies, Ukraine

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Regulation of foodstuffs contaminated with radioactive substances after the Chornobyl NPP Accident Oleg Nasvit National Institute for Strategic Studies, Ukraine

  2. Regulation of foodstuffs contaminated with radioactive substances after the Chornobyl NPP accident, Bq/kg(l) Dose limits for population after Chornobyl: 1st year – 100 mSv; 2nd and 3rd – 30 mSv; 4th – 25 mSv; since 1991 – 5 mSv (internal, TPL-91)

  3. Approach PL-97 • Critical age group • Permissible daily intake of RN • Reference ration • Reference dose structure • Share of RN for each food product according to reference dose structure • Permissible concentrations (PL) • 100% contaminated food to PL, reference ration, 1 mSv/year for each RN (137Cs, 90Sr)

  4. Critical age group(s) Permissible daily intake: 137Cs 210 Bq; 90Sr 35 Bq

  5. Reference ration and dose structure Reference ration (1990) Reference dose structure

  6. Special infants’ food • Considered separately • Total annual dose (Cs+Sr) not more than 1 mSv • Daily intake 137Cs 40 Bq, 90Sr 13 Bq • Daily ration not more than 1 kg

  7. Conservatism • Contributors • Real ration v. reference • Different age groups v. critical • Actual contamination levels distribution v. 100% PL

  8. Дякую за увагу • Спасибо за внимание • Thank you for your attention • ありがとうございました

More Related