Volume 37, Number C1, February 2002ECORAD 2001: The Radioecology - Ecotoxicology of Continental and Estuatine Environments
|Page(s)||C1-1247 - C1-1252|
|Published online||25 March 2010|
Development of models to assess the environmental impacts arising from chronic atmospheric and sub-surface sources of tritium
Independent Consultant, France
2 AECL, Canada
3 RFNC-VNIIEF, Russia
4 CEA/DASE, France
5 ZSR, Germany
6 QuantiSci Ltd. U.K.
Models that describe tritium dispersion in the atmosphere and its subsequent transfer to soil and vegetation were compared through use of well-defined scenarios, and validated by comparing predictions with observed long-term data. Predicted concentrations agreed with observations to within a factor of 2-4 for all compartments (air, soil, vegetation). A comparison of sub-surface models for predicting tritium migration into or out of aquifers, was also carried out, and it was shown that in each of the cases different models agree within a factor of 2 for most endpoints. Validation of the subsurface models against observations is still to be done.
© EDP Sciences, 2002
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