Activities of the EMRAS Tritium/C14 Working Group
| Autor: | A. Venter, P. A. Davis, M. Balonov |
|---|---|
| Rok vydání: | 2005 |
| Předmět: |
Nuclear and High Energy Physics
Waste management 020209 energy Mechanical Engineering Aquatic ecosystem 02 engineering and technology 01 natural sciences 010305 fluids & plasmas Food chain Nuclear Energy and Engineering Environmental modeling 0103 physical sciences Radioactive contamination Environmental monitoring 0202 electrical engineering electronic engineering information engineering Fish Environmental science General Materials Science Organically bound tritium Civil and Structural Engineering |
| Zdroj: | Fusion Science and Technology. 48:423-430 |
| ISSN: | 1943-7641 1536-1055 |
| DOI: | 10.13182/fst05-a958 |
| Popis: | A new model evaluation program, Environmental Modeling for Radiation Safety (EMRAS), was initiated by the International Atomic Energy Agency in September 2003. EMRAS includes a working group (WG) on modeling tritium and C-14 transfer through the environment to biota and man. The main objective of this WG is to develop and test models of the uptake, formation and translocation of organically bound tritium (OBT) in food crops, animals and aquatic systems. To the extent possible, the WG is carrying out its work by comparing model predictions with experimental data to identify the modeling approaches and assumptions that lead to the best agreement between predictions and observations. Results for scenarios involving a chronically contaminated aquatic ecosystem and short-term exposure of soybeans are presently being analyzed. In addition, calculations for scenarios involving chronically contaminated terrestrial food chains and hypothetical short-term releases are currently underway, and a pine-tree scenario is being developed. The preparation of datasets on tritium dynamics in large animals and fish is being encouraged, since these are the areas of greatest uncertainty in OBT modeling. These activities will be discussed in this paper. |
| Databáze: | OpenAIRE |
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