Development and validation of a program for assessing the consequences of radioactivity releases from fusion reactor accidents

Autor: CUI Weijie, ZHANG Jinlong, LI Zaixin, CAO Bo
Jazyk: čínština
Rok vydání: 2024
Předmět:
Zdroj: Fushe yanjiu yu fushe gongyi xuebao, Vol 42, Iss 3, Pp 030601-030601 (2024)
Druh dokumentu: article
ISSN: 1000-3436
DOI: 10.11889/j.1000-3436.2023-0113
Popis: The deuterium-tritium fusion reaction is the fastest commercially achievable artificially controlled fusion reaction. However, tritium, as a fuel and neutron radiation-activated material, poses radioactive safety challenges. To simulate the migration of tritium and radioactive dust in the environment under accident conditions, a dispersion simulation program called ACCTRI (ACCidental model for TRItium release) has been developed based on the modified Gaussian multi-puff model, considering dry and wet deposition and tritium re-emission effects. The concentration and dose results calculated using ACCTRI are very close to those calculated using UFOTRI and HotSpot, with a maximum difference of no more than one order of magnitude. A comparison with the experimental results reveals that the results of ACCTRI with tritium buoyancy correction are close to the experimental data. ACCTRI has good accuracy and can be used as a reference for environmental radioactivity safety in fusion reactor site selection and hypothetical accident analysis.
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