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Near-Field Transport of 129I from a Point Source in an In-Room Disposal Vault

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Abstract

A very small number of disposal containers of heat generating nuclear waste may have initial manufacturing defects that would lead to pin-hole type failures at the time of or shortly after emplacement. For sufficiently long-lived containers, only the the initial defects need be considered in modelling of release rates from the disposal vault. Two approaches to modelling of near-field mass transport from a single point source within a disposal room have been compared: the finite-element code MOTIF (AModelOfTransportInFractured/porous media) and a boundary integral method (BIM). These two approaches were found to give identical results for a simplified model of the disposal room without groundwater flow. MOTIF has been then used to study the effects of groundwater flow on the mass transport out of the emplacement room.

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References

  1. Environmental Impact Statement on the Concept for Disposal of Canada’s Nuclear Fuel Waste, Atomic Energy of Canada Limited, AECL-10711, COG-93-1, 1994.

  2. L.H. Johnson, D.M. LeNeveu, D.W. Shoesmith, D.W. Oscarson, M.N. Gray, R.J. Lemire, and N.C. Garisto, The Disposal of Canada’s Nuclear Fuel Waste: The Vault Model Postclosure Assessment, AECL-10714, COG-93-4, 1994.

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Authors and Affiliations

  1. Whiteshell Laboratories, Aecl Research, Pinawa, Manitoba, R0E 1L0, Canada

    Miroslav Kolář, Dennis M. Leneveu & Lawrence H. Johnson

Authors
  1. Miroslav Kolář
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  2. Dennis M. Leneveu
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  3. Lawrence H. Johnson
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Kolář, M., Leneveu, D.M. & Johnson, L.H. Near-Field Transport of 129I from a Point Source in an In-Room Disposal Vault. MRS Online Proceedings Library 353, 535–542 (1994). https://doi.org/10.1557/PROC-353-535

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  • DOI: https://doi.org/10.1557/PROC-353-535

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