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


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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Correspondence to Miroslav Kolář.

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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).

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