A simple model to calculate doses for acute tritium releases, based on HT field experiments in Canada and France

Conference · Sun Mar 01 04:00:00 EST 1992 · Fusion Technology; (United States)

OSTI ID:5102131

Bartels, H W ^[1]

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1. Max-Planck-Institut fuer Plasmaphysik, Garching (Germany)

A significant fraction of the tritium inventory of a fusion plant will be in the elemental form HT. In this paper a simple model is proposed to calculate early doses following an HT release. The does is not dominated by the primary HT plume but by deposition of HT into the soil, subsequent oxidation to HTO by microorganisms and the following remission of HTO. The difficulty of calculating HTO concentrations from a large area source is solved by defining a remission velocity. All data available from the large scale release experiments in France (1986) and Canada (1987) are used to fit this parameter. With typical worst case conditions one gets an early dose of 0.04 Sv/kg-T as HT at 1000 m distance from the source, building wake effects included. This model can also be used to calculate HTO-release doses and predicts 0.6 Sv/kg-T as HTO for the same worst case condition. About 20% of this does is caused by remission of HTO deposited into the soil. The accuracy of the model is estimated to be a factor of 2 - 2.5 up and down.

• OSTI ID: 5102131
• Report Number(s): CONF-910920--
• Conference Information: Journal Name: Fusion Technology; (United States) Journal Volume: 21:2
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
540230 -- Environment
Terrestrial-- Radioactive Materials Monitoring & Transport-- (1990-)
560101 -- Biomedical Sciences
Applied Studies-- Radiation Effects-- Dosimetry & Monitoring-- (1992-)
61 RADIATION PROTECTION AND DOSIMETRY
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700460* -- Fusion Technology-- Heating & Fueling Systems
99 GENERAL AND MISCELLANEOUS
990200 -- Mathematics & Computers
CANADA
CHEMICAL REACTIONS
DEVELOPED COUNTRIES
DOSES
EMISSION
EUROPE
FIELD TESTS
FRANCE
Fu
Fuels-- (1992)
HYDROGEN COMPOUNDS
HYDROGEN TRITIDE
INVENTORIES
MATHEMATICAL MODELS
MICROORGANISMS
NORTH AMERICA
OXIDATION
PLUMES
RADIATION DOSES
RELEASE LIMITS
SOILS
TESTING
THERMONUCLEAR REACTORS
TRITIDES
TRITIUM COMPOUNDS
VELOCITY