Nuclear waste-form risk assessment for US Defense waste at Savannah River Plant. Annual report FY 1981

AbstractA cement-based waste form, “saltstone,” has been designed for disposal of Savannah River Plant low-level radioactive salt waste. Laboratory and field tests indicate that this stabilization process greatly reduces the mobility of all of the waste constituents in the surface and near-surface environment. Bulk properties of this material have been tailored with respect to salt leach rate, permeability, and compressive strength. Microstructure and mineralogy were characterized by SEM and x-ray diffraction analyses.Compressive strength was found to increase as the water to cement ratio decreased. Porosity and mean pore size increased with increasing water to cement ratios. Bulk diffusivities of the various ions dissolved in the pore solutions were also found to increase as water to cement ratios increased.

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Archeological investigations by the Savannah River Plant Archeological Research Program. Annual report, 1978-1979

10.2172/6139373 ◽

1979 ◽

Author(s):

G. T. Hanson, Jr. ◽

R. D. Brooks

Keyword(s):

Research Program ◽

Annual Report ◽

Savannah River ◽

Savannah River Plant

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Up Close: Immobilization of High-Level Nuclear Waste at the Savannah River Plant

MRS Bulletin ◽

10.1557/s0883769400067592 ◽

1987 ◽

Vol 12 (5) ◽

pp. 61-65 ◽

Cited By ~ 5

Author(s):

M.J. Plodinec

Keyword(s):

Nuclear Waste ◽

Melting Process ◽

Melt Processing ◽

Savannah River ◽

Good Product ◽

Glass Processing ◽

Savannah River Plant ◽

Commercial Glass ◽

High Level Nuclear Waste ◽

High Level

At the Savannah River Plant (SRP), construction of what will be the world's largest solidification facility for nuclear waste has been under way since 1983. Beginning in 1990, the nearly 100 million liters of liquid high-level nuclear waste now stored on the site will be made into a durable borosilicate glass in this Defense Waste Processing Facility (DWPF).In developing a slurry-fed melting process for the DWPF, we made advances in understanding both glass processing and glass durability. This article focuses on what we learned and what further advances are likely to be made.Generally speaking, the goal of any glass technologist is to make a good glass and to make it well. In the glass industry a good product is whatever people will buy. To make it well means, above all, to make the product as economically as possible. Thus, the commercial glass technologist will control the composition of the melter feed material very closely to ensure that only the components necessary for glass performance are included, and in the least expensive form possible. The commercial glass technologist may also tolerate low yields or specify several stages of post-melt processing if it is necessary to produce a product to demanding specifications.To the nuclear waste glass technologist, however, a good product is one which will be stable in geologic environments for millions of years.

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