A Dynamic Modeling 3H Transfer to the Environment Under Accidental Release from the Fusion Reactor

Nie, Baojie; Ni, Muyi; Jiang, Jieqiong; Wu, Yican

doi:10.1007/s10894-015-9878-7

Cited by 12 publications

(6 citation statements)

References 23 publications

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“…The tritium exposure pathways of human are HTO inhalation and skin absorption, HTO/OBT ingestion of plant and animal product (leafy vegetable, fruit, root crop, grain, cow, pig, chicken, egg and milk). A tritium metabolism model (Nie et al, 2015a) is adopted to evaluate the dynamic concentration in the human body.…”

Section: Tritium Dynamic Migration Modelmentioning

confidence: 99%

“…Based on the unique migration behaviour of tritium after accidental release from the fusion reactor, a dynamic model of tritium transfer in the environment has been developed and validated by FDS Team (Nie et al, 2015a). The objective of this paper is to evaluate the dynamic tritium concentration in the human body on the time scale under the assumed extreme conditions.…”

Section: Introductionmentioning

confidence: 99%

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Dynamic evaluation of environmental impact due to tritium accidental release from the fusion reactor

Nie

Jiang

et al. 2015

Journal of Environmental Radioactivity

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Section: Tritium Dynamic Migration Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Dynamic evaluation of environmental impact due to tritium accidental release from the fusion reactor

Nie

Jiang

et al. 2015

Journal of Environmental Radioactivity

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“…For example, taking the isotope polonium-210 as an example a-source and caesium-137 as an example b-source, one could be tempted to assume that 137 Cs has a higher settling time because of its low density (q Cs % 1:87 g/cm 3 ) in comparison with the heavier 210 Po (q Po % 9:19 g/cm 3 ).…”

Section: Discussionmentioning

confidence: 99%

“…It will be shown that when the electrical charges come from the process of radioactive decay, i.e. alpha or beta decay, it is possible to extend the Rayleigh limit of charge density, and an expression is derived for the critical size of the bubbles, which can be used to predict the maximum size of tritium bubbles from the coalescence and growth process in liquid Pb-16Li blankets for its extraction in fusion reactor technologies [2,3].…”

Section: Introductionmentioning

confidence: 99%

The Critical Radius of Radioactive Liquid Droplets with Particular Application in Tritium Extraction

Arias

Parks

2015

J Fusion Energ

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The Rayleigh density limit and its significance with regard to coalescence and growth of radiative bubbles is discussed. It is shown that taking into account the kind of radioactive decay, i.e. alpha or beta decay, the Rayleigh density limit results in a critical radius limit for the coalescence and growth of radiative bubbles. Because the size of bubbles is one of the most important parameters to be considered in transport and extraction technologies, the present study has important application for the computational modelling of tritium extraction from liquid Pb-16Li blankets for fusion reactor technologies. Keywords Radiative bubbles Á Coalescence and growth Á Tritium breedingList of symbols C d Drag coefficient e eThe energy of the most energetic electron g Acceleration due to gravity P e Electrostatic pressure P m Mechanical pressure Q t Total positive electrical charge inside the liquid droplet R Radius of the liquid droplet R cr Critical radius of the liquid droplet t Time VElectrical potential at the liquid-air interfaceGreek symbols e o Electrical permittivity in vacuum q Density of air q l Density of the liquid droplet r Surface tension

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“…Little information is currently available regarding the tritium uptake and subsequent formation of organically bound tritium (OBT) in plants exposed to elevated levels of atmospheric tritium during the nighttime [24]. Up to now, some typical tritium concentration assessment models have been developed such as ETMOD code [25], UFOTRI code [26,27], and TAS code [28,29]. However, it was founded that these models do not perform well in plants for the nighttime release.…”

Section: Introductionmentioning

confidence: 99%

Tritium concentration in soybean plants exposed to atmospheric HTO during nighttime and daytime

Shen

Liu

2016

NUCL SCI TECH

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Potted soybean plants were exposed to evaporate HTO for 1 h inside an exposure box at two different growth stage (flowering and podding stage, filling stage) during nighttime and daytime. The concentration of tissuefree water tritium (TFWT) and organically bound tritium (OBT) in leaves and beans was measured at the end of the exposure. The results indicated that the quasi-equilibrium between the TFWT concentrations in the soybean leaves and the HTO concentration of the ambient air moisture required more than 1 h to be reached. The relative TFWT concentrations in the nighttime represent about 1/2 to 2/3 of the concentrations obtained in the day in the leaves compared to about 1/2 to 4/3 in the beans. The relative OBT concentrations under night conditions were about 2/5 to 1/2 of those under day conditions in the leaves, contrary to 1/2-7/10 for the beans. By developing tritium concentration assessment model with a short-term release of atmospheric HTO, we comprehensively considered the plant growth stage and the environmental conditions.

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A Dynamic Modeling 3H Transfer to the Environment Under Accidental Release from the Fusion Reactor

Cited by 12 publications

References 23 publications

Dynamic evaluation of environmental impact due to tritium accidental release from the fusion reactor

Dynamic evaluation of environmental impact due to tritium accidental release from the fusion reactor

The Critical Radius of Radioactive Liquid Droplets with Particular Application in Tritium Extraction

Tritium concentration in soybean plants exposed to atmospheric HTO during nighttime and daytime

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