A simple model to calculate doses for acute tritium releases, based on HT field experiments in Canada and France
- 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-; CODEN: FUSTE
- Journal Information:
- Fusion Technology; (United States), Vol. 21:2; Conference: 4. topical meeting on tritium technology in fission, fusion, and isotopic applications, Albuquerque, NM (United States), 29 Sep - 4 Oct 1991; ISSN 0748-1896
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
Fu
54 ENVIRONMENTAL SCIENCES
61 RADIATION PROTECTION AND DOSIMETRY
99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
HYDROGEN TRITIDE
RADIATION DOSES
CANADA
EMISSION
FIELD TESTS
FRANCE
INVENTORIES
MATHEMATICAL MODELS
MICROORGANISMS
OXIDATION
PLUMES
RELEASE LIMITS
SOILS
THERMONUCLEAR REACTORS
TRITIUM COMPOUNDS
VELOCITY
CHEMICAL REACTIONS
DEVELOPED COUNTRIES
DOSES
EUROPE
HYDROGEN COMPOUNDS
NORTH AMERICA
TESTING
TRITIDES
700460* - Fusion Technology- Heating & Fueling Systems
Fuels- (1992)
540230 - Environment
Terrestrial- Radioactive Materials Monitoring & Transport- (1990-)
560101 - Biomedical Sciences
Applied Studies- Radiation Effects- Dosimetry & Monitoring- (1992-)
990200 - Mathematics & Computers