International Comparison of Computer Codes for Modelling the Dispersion and Transfer of Tritium Released to the Atmosphere
Fusion Science and Technology / Volume 8 / Number 2P2 / September 1985 / Pages 2575-2581
Environmental Study / Proceedings of the Second National Topical Meeting on Tritium Technology in Fission, Fusion and Isotopic Applications (Dayton, Ohio, April 30 to May 2, 1985) / dx.doi.org/10.13182/FST85-A24667
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Computer codes for modelling the dispersion and transfer of tritium released to the atmosphere were compared. The codesa originated from Canada, the United States, Sweden and Japan. The comparisons include acute and chronic emissions of tritiated water vapour or elemental tritium from a hypothetical nuclear facility. Individual and collective doses to the population within 100 km of the site were calculated. The discrepancies among the code predictions were about one order of magnitude for the HTO emissions but were significantly more varied for the HT emissions. Codes that did not account for HT to HTO conversion and cycling of tritium in the environment predicted doses that were several orders of magnitude less than codes that incorporate this feature into the model.
