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Ph. GUETAT, A. TOGNELLI, L. VICHOT

Contribution of CEA-Valduc centre on knowledge about atmospheric tritiated water transfers in the different compartments of the environment from survey data. Ph. GUETAT, A. TOGNELLI, L. VICHOT. Transferts. Releases Atmospheric transfer Transfer Air / watertable /river water Tritium

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Ph. GUETAT, A. TOGNELLI, L. VICHOT

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  1. Contribution of CEA-Valduc centre on knowledge about atmospheric tritiated water transfers in the different compartments of the environment from survey data. Ph. GUETAT, A. TOGNELLI, L. VICHOT SFRP Paris

  2. Transferts • Releases • Atmospheric transfer • Transfer Air / watertable /river • water • Tritium • Food chain SFRP Paris

  3. Atmospheric Release : Tritium 100g/a 100g/an 5g 1g/an 1g Constant annual Release for 10 y : about 1 gramme (358TBq) SFRP Paris

  4. atmospheric Transfers Measures and assessments SFRP Paris

  5. Environmentmeteo Dry conditions Unstable Dry conditions stable rainy All stabilities SFRP Paris

  6. NE SE NW SE 2006 : 7.10-8 1.4 10-7 9.10-8 6.4 10-8 atmospheric Transfer measures and assessement SFRP Paris

  7. Hydrogeology SFRP Paris

  8. Bassin Versant de la Douix de Léry Valduc Léry 500 m 0 SFRP Paris

  9. Evolution of surface waters SFRP Paris

  10. Concentrations in tritium of the uper water table 1987 SFRP Paris

  11. Concentrations in tritium of the uper water table 1997 SFRP Paris

  12. Concentrations in tritium of the uper water table 2008 SFRP Paris

  13. Free waters Data of environmental survey SFRP Paris

  14. rains less tritiated than air water vapor SFRP Paris

  15. Surface waters small influence of rains SFRP Paris

  16. Grass between air vapor and rain water SFRP Paris

  17. milk « average » of grass SFRP Paris

  18. When rain deposition small, vapor deposition can be seen Average of monthly measurements in 1999-2000 1 : continuous 2: points SFRP Paris

  19. Tritium organically bound (Bq/L of combustion water) SFRP Paris

  20. Water concentrations in air, rain, and vegetables : free and combustion SFRP Paris

  21. Combustion water/ free water SFRP Paris

  22. Conclusions • Wet deposition (rains) more important than supposed for water table • Air vegetable transfer more important than free water OBT transfer • Must we measure OBT for survey purpose ? • Which parameters in case of accident ? • Validation of codes. SFRP Paris

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