The effect of chemical speciation on the impact of129I discharges to atmosphere from BNFL Sellafield, Cumbria
| Autor: | D. Jackson, K. Rackham, M. J. Fulker, S. J. Parry, F. Ibrahimi |
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| Rok vydání: | 2002 |
| Předmět: |
Fission products
Renewable Energy Sustainability and the Environment business.industry Fission Chemical speciation Health Toxicology and Mutagenesis Public Health Environmental and Occupational Health Model parameters Nuclear power Atmosphere Neutron capture Nuclear Energy and Engineering Abundance (ecology) Environmental chemistry Environmental science Safety Risk Reliability and Quality business Waste Management and Disposal |
| Zdroj: | Radioprotection. 37:C1-459 |
| ISSN: | 1769-700X 0033-8451 |
| Popis: | lM I is produced through neutron-induced fission of 23i U and neutron capture reactions with the fission products 1!S Te and nn Te in the cores of nuclear reactors. This typically constitutes about 1% of the total fission products, depending on fuel bum-up. Whilst is not released in routine discharges from nuclear power plants it is released during reprocessing. The ability to model '"1 behaviour (important for prospective assessments) has been relatively poor. This is due both to variability in the reported behaviour of iodine, which may be related to abundance and physico-chemical form, and to the relative paucity of data for ,29 1. The primary aims of this study are to measure environmental concentrations of '"l around Sellafield; to establish whether the chemical species of iodine in air differs as a function of the source term, and; to determine concomitant values for model parameters defining 1291 transport through the environment. Some differences in the environmental transport of are observed, albeit slight, apparently related to source term. These findings suggest that a source-specific approach may be appropriate. The critical group dose arising from l "l is estimated to be about 1.4 uSv a"1 to adults and 3.2 uSv a"1 to infants. |
| Databáze: | OpenAIRE |
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