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Abstract JO193Abstract + Presentation
A STATE-OF-THE-ART CALCULATION TOOL FOR PUBLIC AND WORKER DOSES
A STATE-OF-THE-ART CALCULATION TOOL FOR PUBLIC AND WORKER DOSES
JOAKIM KLUG1, MANORMA KUMAR1
1Vysus Group
E-mail: joakim.klug@vysusgroup.com, manorma.kumar@vysusgroup.com
Facilities producing radioactive materials – nuclear power plants, nuclear waste management organizations, research establishments, etc. – must assess consequences from accidents that could lead to dispersion of such materials, and to demonstrate compliance with requirements from national nuclear safety regulators (e.g., dose acceptance criteria). For this purpose, a state-of-the-art analysis tool – Vysus Doctor – has been developed by Vysus Sweden AB. For any given accident sequence, it calculates activity transport, activity concentrations, and doses to workers and to the public, making it key in accounting for radiological consequences, as well as supporting emergency preparedness. It has an intuitive user interface and a calculation engine automating the analysis steps to facilitate calculations by users with different background, to reduce the susceptibility to manual errors, to minimize calculation time, and to facilitate traceability.
The paper will present the methodology adopted for the dose calculations and an overview of the analysis steps. This covers accident sequence characterization, modelling, calculation of source terms and doses, and identification of nuclides that dominate the doses. For public doses it will be shown how a wide range of parameters can be altered to model different weather and terrain types governing the dispersion of activities outside a facility, and the resulting public dose.
Keywords: Consequence analysis, dose calculations, worker dose, public dose, radiation, accidents, weather, dispersion, Vysus Doctor.
← Check another abstractJOAKIM KLUG1, MANORMA KUMAR1
1Vysus Group
E-mail: joakim.klug@vysusgroup.com, manorma.kumar@vysusgroup.com
Facilities producing radioactive materials – nuclear power plants, nuclear waste management organizations, research establishments, etc. – must assess consequences from accidents that could lead to dispersion of such materials, and to demonstrate compliance with requirements from national nuclear safety regulators (e.g., dose acceptance criteria). For this purpose, a state-of-the-art analysis tool – Vysus Doctor – has been developed by Vysus Sweden AB. For any given accident sequence, it calculates activity transport, activity concentrations, and doses to workers and to the public, making it key in accounting for radiological consequences, as well as supporting emergency preparedness. It has an intuitive user interface and a calculation engine automating the analysis steps to facilitate calculations by users with different background, to reduce the susceptibility to manual errors, to minimize calculation time, and to facilitate traceability.
The paper will present the methodology adopted for the dose calculations and an overview of the analysis steps. This covers accident sequence characterization, modelling, calculation of source terms and doses, and identification of nuclides that dominate the doses. For public doses it will be shown how a wide range of parameters can be altered to model different weather and terrain types governing the dispersion of activities outside a facility, and the resulting public dose.
Keywords: Consequence analysis, dose calculations, worker dose, public dose, radiation, accidents, weather, dispersion, Vysus Doctor.