Abstract
This report presents the results obtained in the optional part of the `Repository system simulation test` (RSST). The results of the compulsory part have been reported and evaluated in another publication (EUR 12544). The effects of the oxidation-reduction potential and carbonate concentration on the alterability and containment properties of R7T7 glass were investigated under semi-integral conditions, i.e. by leaching glass samples doped with {sup 239}Pu and {sup 237}Np in the presence of environmental materials (sand, clay and granite) in three different test media: . a carbonated medium obtained by adding sodium bicarbonate; . an oxidative medium with a 2-bar oxygen partial pressure; . a reducing medium with a 2-bar partial pressure of argon and 5% H{sub 2} additive. Under the semi-integral test conditions, the normalized Np and Pu mass losses varied by less than an order of magnitude for the different test media, but the following general tendencies were observed: NL(Np)CO{sub 2} > NL(Np)O{sub 2} > NL(Np)H{sub 2} and NL(Pu)O{sub 2} > NL(Pu)CO{sub 2} > NL(Pu)H{sub 2}. A large fraction of the released activity was incorporated by the environmental materials present in the conditioning cell, notably by the clay. The actinide concentrations in the interstitial water and the amounts fixed
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Dussossoy, J L;
Chouchan, J L;
Bouchon, M;
Vernaz, E
[1]
- CEA Etablissement de la Vallee du Rhone, 30 - Bagnols-sur-Ceze (Luxembourg)
Citation Formats
Dussossoy, J L, Chouchan, J L, Bouchon, M, and Vernaz, E.
Leaching sensitivity to geologic environmental parameters. Task 3. Characterization of radioactive waste forms. A series of final reports (1985-89). No 14.
France: N. p.,
1991.
Web.
Dussossoy, J L, Chouchan, J L, Bouchon, M, & Vernaz, E.
Leaching sensitivity to geologic environmental parameters. Task 3. Characterization of radioactive waste forms. A series of final reports (1985-89). No 14.
France.
Dussossoy, J L, Chouchan, J L, Bouchon, M, and Vernaz, E.
1991.
"Leaching sensitivity to geologic environmental parameters. Task 3. Characterization of radioactive waste forms. A series of final reports (1985-89). No 14."
France.
@misc{etde_10152540,
title = {Leaching sensitivity to geologic environmental parameters. Task 3. Characterization of radioactive waste forms. A series of final reports (1985-89). No 14}
author = {Dussossoy, J L, Chouchan, J L, Bouchon, M, and Vernaz, E}
abstractNote = {This report presents the results obtained in the optional part of the `Repository system simulation test` (RSST). The results of the compulsory part have been reported and evaluated in another publication (EUR 12544). The effects of the oxidation-reduction potential and carbonate concentration on the alterability and containment properties of R7T7 glass were investigated under semi-integral conditions, i.e. by leaching glass samples doped with {sup 239}Pu and {sup 237}Np in the presence of environmental materials (sand, clay and granite) in three different test media: . a carbonated medium obtained by adding sodium bicarbonate; . an oxidative medium with a 2-bar oxygen partial pressure; . a reducing medium with a 2-bar partial pressure of argon and 5% H{sub 2} additive. Under the semi-integral test conditions, the normalized Np and Pu mass losses varied by less than an order of magnitude for the different test media, but the following general tendencies were observed: NL(Np)CO{sub 2} > NL(Np)O{sub 2} > NL(Np)H{sub 2} and NL(Pu)O{sub 2} > NL(Pu)CO{sub 2} > NL(Pu)H{sub 2}. A large fraction of the released activity was incorporated by the environmental materials present in the conditioning cell, notably by the clay. The actinide concentrations in the interstitial water and the amounts fixed on the granite were low.}
place = {France}
year = {1991}
month = {Dec}
}
title = {Leaching sensitivity to geologic environmental parameters. Task 3. Characterization of radioactive waste forms. A series of final reports (1985-89). No 14}
author = {Dussossoy, J L, Chouchan, J L, Bouchon, M, and Vernaz, E}
abstractNote = {This report presents the results obtained in the optional part of the `Repository system simulation test` (RSST). The results of the compulsory part have been reported and evaluated in another publication (EUR 12544). The effects of the oxidation-reduction potential and carbonate concentration on the alterability and containment properties of R7T7 glass were investigated under semi-integral conditions, i.e. by leaching glass samples doped with {sup 239}Pu and {sup 237}Np in the presence of environmental materials (sand, clay and granite) in three different test media: . a carbonated medium obtained by adding sodium bicarbonate; . an oxidative medium with a 2-bar oxygen partial pressure; . a reducing medium with a 2-bar partial pressure of argon and 5% H{sub 2} additive. Under the semi-integral test conditions, the normalized Np and Pu mass losses varied by less than an order of magnitude for the different test media, but the following general tendencies were observed: NL(Np)CO{sub 2} > NL(Np)O{sub 2} > NL(Np)H{sub 2} and NL(Pu)O{sub 2} > NL(Pu)CO{sub 2} > NL(Pu)H{sub 2}. A large fraction of the released activity was incorporated by the environmental materials present in the conditioning cell, notably by the clay. The actinide concentrations in the interstitial water and the amounts fixed on the granite were low.}
place = {France}
year = {1991}
month = {Dec}
}