scholarly journals Actinide, Elemental, and Fission Product Measurements by ICPMS at the Savannah River Site

2009 ◽  
pp. 32-32-9
Author(s):  
LL Tovo ◽  
JW Clymire ◽  
WT Boyce ◽  
WF Kinard
Keyword(s):  
Fission Product ◽  
Savannah River Site ◽  
Savannah River ◽  
River Site

Durabilities and Microstructures of Radioactive Glasses for Immobilization of Excess Actinides at the Savannah River Site

1995 ◽  
Vol 412 ◽  
Author(s):  
N. E. Bibler ◽  
W. G. Ramsey ◽  
T. F. Meaker ◽  
J. M. Pareizs
Keyword(s):  
Fission Product ◽  
Mass Spectroscopy ◽  
Savannah River Site ◽  
Borosilicate Glasses ◽  
Savannah River ◽  
Release Rates ◽  
The Third ◽  
Congruent Dissolution ◽  
Pu Isotopes ◽  
River Site

AbstractThis paper presents results of an investigation of the microstructures and durabilities of glasses for immobilization of excess Pu, Am, and Cm at the Savannah River Site (SRS). The glasses investigated had compositions based on commercial lanthanide glasses developed in the 1930's. All the glasses were prepared remotely in shielded cells and the analyses performed using instruments in radio hoods or benches. Durabilities were measured using the ASTM C-1285 standard leach test (PCT). Results for three glasses are presented. Two glasses contained 15 and 7 wt.% Pu, respectively. The third glass contained Am and Cm. The 15 wt% Pu glass was not completely amorphous and contained crystals of undissolved PuO2 and as well as dissolved PuO2. The 7 wt% Pu glass was completely amorphous. The Am/Cm glass contained <1 wt% actinides and was homogenous. The PCT tests for the Pu glasses indicated that B and Ba were leached congruently. Sm and Pu were leached at slower rates. In some cases release rates for specific Ba, Sm, and Pu isotopes were measured by analyzing the leachates by mass spectroscopy. For the Am-Cm glass release rates for B and Ba were equal indicating congruent dissolution. All three glasses were 25 to 50 times more durable than the borosilicate glasses developed at SRS for immobilization of the fission product HLW resulting from reprocessing operations at SRS.

Sorption of fission product radionuclides, 137Cs and 90Sr, by Savannah River Site sediments impregnated with colloidal silica

2004 ◽  
Vol 92 (7) ◽  
Author(s):  
N. Hakem ◽  
John A. Apps ◽  
G. J. Moridis ◽  
I. Al Mahamid
Keyword(s):  
Fission Product ◽  
Silica Gel ◽  
Colloidal Silica ◽  
Effective Means ◽  
Savannah River Site ◽  
Savannah River ◽  
Permeable Sediments ◽  
River Site ◽  
And Diffusion ◽  
Hydraulic Barriers

SummaryPermeation grouting with colloidal silica gel is a potentially effective means for creating hydraulic barriers to prevent the advective migration of radioactive contaminants in shallow permeable sediments. However, the effectiveness of silica gel grouted barriers in controlling transport of fission product radionuclides through sorption and diffusion is unknown. To resolve this question, static-batch sorption measurements with Cs

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