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Modelling of Carbon-14, Iodine-129 and Cesium-137 releases from near surface radioactive waste disposal and their impact on environment and humans

Modellierung der Freisetzung von C-14, I-129 und Cs-137 aus einem oberflächennahen Endlager für radioaktive Abfälle und deren Auswirkungen auf die Ungebung und den Menschen
D. Adliene, N. Skridaila, S. Motiejunas and C. Meurville
From the journal Kerntechnik


Near surface disposal of low and intermediate level radioactive waste is probably the best solution for a long term radioactive waste management today. For safety assurance all near surface disposal aspects and evolution scenarios should be reviewed and analyzed including repository design and site selection, because releases of radionuclides from the repository into the environment cause radiation exposure to the public. Mechanisms of 14C, 129I and 137Cs transportation from the repository into the environment, modelled for the hypothetical radioactive waste disposal facility in Lithuania, are investigated and the results of effective dose calculations for the main exposure pathways are discussed in this paper. The RESRAD-OFFSITE code has been used in this study for modelling purposes. It is shown that the radionuclide transport time into the environment, its radioactive contamination and the radiation exposure to the public mostly depends on the mobility and sorption properties of radionuclides and on the appropriate transport pathways from the repository into the environment.


Eine nahe der Oberfläche liegende Lagerungseinrichtung für niedrig- und mittelradioaktive Abfälle ist vielleicht heute die beste Lösung für langjähriges Management radioaktiver Abfälle. Um Strahlenschutz und Strahlensicherheit zu gewährleisten, ist es notwendig, alle Aspekte der Lagerung zu betrachten und die entsprechenden Szenarien zu analysieren und zu überprüfen, unter Berücksichtigung der Auslegung der Lagerstätte und der Standortwahl, da die Freisetzung radioaktiver Stoffe in die Umgebung mit einer zusätzlichen Strahlenexposition der Bevölkerung verbunden ist. Mit Hilfe des RESRAD-OFFSITE Codes wurde die hypothetische Lagerungs-einrichtung für Litauen modelliert, deren Parameter den realen Bedingungen des künftigen Endlagers entsprechen. Es wird gezeigt, dass die Transportzeit der radioaktiven Stoffe in die Umgebung am ehesten von den Mobilitäts- und Sorptions-Eigenschaften der Radionuklide und von den entsprechenden Trans-portwegen von der Lagerstätte in die Umgebung abhängig ist.



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Received: 2007-2-12
Published Online: 2013-04-05
Published in Print: 2007-11-01

© 2007, Carl Hanser Verlag, München