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Synroc for Immobilising Excess Weapons Plutonium

Published online by Cambridge University Press:  15 February 2011

A. Jostsons ,
E. R. Vance ,
D. J. Mercer  and
V. M. Oversby
A. Jostsons
Affiliation:
Advanced Materials Program, ANSTO, Private Mail Bag 1, Menai, N.S.W., 2234, Australia
E. R. Vance
Affiliation:
Advanced Materials Program, ANSTO, Private Mail Bag 1, Menai, N.S.W., 2234, Australia
D. J. Mercer
Affiliation:
Advanced Materials Program, ANSTO, Private Mail Bag 1, Menai, N.S.W., 2234, Australia
V. M. Oversby
Affiliation:
Lawrence Livermore National Laboratory, Livermore, CA 94450, U.S.A.
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Abstract

The immobilisation of excess weapons plutonium into Synroc can meet all of the important criteria discussed by the U.S. National Academy of Sciences (NAS)(1) for disposal, if the disposal option is pursued rather than options that exploit the energy value of plutonium. This paper summarises the relevant background of Pu incorporation into Synroc, the durability of Pu-containing Synroc and outlines a process flowsheet based on the experience with the 10 kg/hr Synroc Demonstration Plant at ANSTO. The extensive solid solubility of Pu in Synroc, coupled with a very high degree of chemical durability under hydrothermal conditions, makes Synroc ideal as a waste matrix for Pu disposal in deep boreholes to minimise diversion and proliferation risks.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 353: Symposium – Scientific Basis for Nuclear Waste Management XVIII , 1994 , 775
Copyright
Copyright © Materials Research Society 1995

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References

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