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Enhancing Nuclear Safety


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Workplace characterisation in case of rail transport of radioactive materials


Congress title :IM 2005 - European Workshop on Individual Monitoring of Ionising Radiation 
Congress town :Vienne
Congress date :11/04/2005
Journal title : Radiation Protection Dosimetry Vol 125 issue 1-4 Pages : 369-375

Document type > *Congrès/colloque

Keywords >

Research Unit > IRSN/DRPH/SDE/LDRI

Authors > BOTTOLLIER-DEPOIS Jean-François, DONADILLE Laurent, ITIE Christian, LAHAYE Thierry, MULLER Hubert

Publication Date > 01/07/2007

Summary

IRSN has been asked by SNCF (French Railways) to carry out measurements in order to establish the values of ambient dose equivalents H*(10) in the vicinity of shipments of radioactive materials to assess the external exposure to ionising radiation to which employees may be subjected during the carriage of radioactive goods. Detailed dosimetric characterisations of the wagons have been made and the external exposure at different stages of the work that is done by the employees have been measured in terms of H*(10). For the study presented in this paper, and corresponding to a used fuel shipment composed of UO2 and UO2-PuO2, it has been observed that the photon and neutron doses are very similar. In addition, the order of magnitude of the total dose integrated by an employee who would carry out 100 times the series of essential operational tasks, has been found to be 250 µSv. This value is compared with those observed for other previously investigated shipments involving the exposure to photon fields only.

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