A literature review of actinide-carbonate mineral interactions Page: 4 of 63
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FOREWORD
This document was prepared in support of the Sandia National Laboratories (SNL) research
effort for the Waste Isolation Pilot Plant (WIPP). The WIPP is a U.S. Department of Energy
facility intended to demonstrate the safe disposal of transuranic nuclear waste; SNL is the scientific
advisor to the WIPP.
One of the current driving scenarios for WIPP performance assessment is human intrusion,
where one or several boreholes are drilled into or through the waste panel(s) in the WIPP after
closure and decommissioning. Under human intrusion scenarios, dissolved or colloidal actinides
may be transported up a breach borehole to the Culebra Dolomite Member of the Rustler
Formation, a dolomitic (calcium-magnesium carbonate) water-bearing unit overlying the WIPP
Site. Should this scenario occur, actinides could be transported through the Culebra and might
eventually reach the accessible environment. One potentially important mechanism for reducing
this transport is chemical interaction between the actinides and the mineral phases in the Culebra,
which could effectively immobilize some fraction of the actinides via incorporation into carbonate
minerals, and thus reduce release from the Culebra. This report summarizes information available
in the literature regarding actinide-carbonate interactions; it will serve as a preliminary guide for
experimental studies for chemical retardatioai at the WIPP.ii
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Stout, D. L. & Carroll, S. A. A literature review of actinide-carbonate mineral interactions, report, October 1, 1993; Albuquerque, New Mexico. (https://digital.library.unt.edu/ark:/67531/metadc1276329/m1/4/: accessed July 16, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.