NNWSI waste from testing at Argonne National Laboratory. Semiannual report, July-December 1985

Bates, J. K.; Gerding, T.J.; Abrajano, T.A.; Ebert, W. L.

doi:10.2172/59886

Cited by 7 publications

(15 citation statements)

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“…Tests conducted with deionized water and large dose rates (~1 x 10 6 rad/h) show a pH drop and increase in glass reactivity [5][6]. In leach tests with tuff groundwater, the leachate pH is buffered by bicarbonate and the glass reaction rate is not affected [7][8][9][10][11]. (4) Gamma irradiation of a CO2-H2O system can result in the formation of organic acids (oxalate and formate).…”

Section: ) Radiation Damage Of the Glass Is Not Manifested In Major mentioning

confidence: 99%

Effects of Alpha and Gamma Radiation on Glass Reaction in an Unsaturated Environment

1990

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Radiation may effect the long-term performance of glass in an unsaturated repository site by interacting with air, water vapor, or liquid water. The present study examines (1) the effects of alpha or gamma irradiation in a water vapor environment, and (2) the influence of radiolytic products on glass reaction. Results indicate that nitric and organic acids form in an irradiated water vapor environment and are dissolved in thin films of condensed water. Glass samples exposed to these conditions react faster and have a different assemblage of secondary phases than glasses exposed to nonirradiated water vapor environments.

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Section: ) Radiation Damage Of the Glass Is Not Manifested In Major mentioning

confidence: 99%

Effects of Alpha and Gamma Radiation on Glass Reaction in an Unsaturated Environment

1990

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“…This simulates the scenario in which a container has multiple perforations which allow water to enter the container, contact the fuel, and exit the container without maintaining contact for an extended period of time. The unsaturated test for spent fuel will be adapted from the procedure used for un saturated testing of the glass waste form Gerding, 1985, 1987;Bates et al, 1986). No QA Level I unsaturated dissolution tests on spent fuel have yet been performed.…”

Section: Planned Workmentioning

confidence: 99%

Plan for spent fuel waste form testing for NNWSI [Nevada Nuclear Waste Storage Investigations]

Shaw¹

1987

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“…The design of the present experiments has been described previously [4,5,6]. Briefly, two glass disks were placed together 1n Individual Type 304 L stainless steel vessels with measured amounts of pre-reacted J-13 water (EJ-13).…”

Section: Experimental Test Matrixmentioning

confidence: 99%

“…Microscopic, SEM/EDS, and SIMS analysis of the reacted glasses were performed using Instruments and procedures discussed previously [4]. Nuclear resonance profiling for hydrogen was performed on selected SRL U glasses by F. Ryerson of Lawrence Livermore National Laboratory (LLNL) 1n the laboratory of Professor W. Lanford (State University of New York, Albany).…”

Section: Analysesmentioning

confidence: 99%

Transport and reaction kinetics at the glass:solution interface region: Results of repository-oriented leaching experiments

Abrajano¹,

Bates²

1986

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MAP DE87 006975Repository-oriented leaching experiments involving Savannah River Laboratory (SRL) 165 type glass under a 7-radiation field (1 * 0.2 x 104 R/h) have been performed by the Nevada Nuclear Waste Storage Investigations (NNWSI) project. In this communication, we discuss glass surface analyses obtained by SEM, nuclear resonance profiling, and SIMS together with leachate solution data 1n relation to a mechanism that couples diffusion, hydrolysis (etching and gelation), and precipitation to qualitatively describe the release of different glass components to the leachant solutions. The release of mobile (e.g., Li) and partly mobile (e.g., B) species 1s controlled primarily by Interdiffusion with water species across the Interdiffusion zone. Glass components that are immobile 1n the Interdiffusion zone are released to the solution by etching. For prediction of long-term steady-state concentrations of glass components with low solubility, the relative rates of release from the glass and secondary mineral precipitation must be taken Into account.

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NNWSI waste from testing at Argonne National Laboratory. Semiannual report, July-December 1985

Cited by 7 publications

References 0 publications

Effects of Alpha and Gamma Radiation on Glass Reaction in an Unsaturated Environment

Effects of Alpha and Gamma Radiation on Glass Reaction in an Unsaturated Environment

Plan for spent fuel waste form testing for NNWSI [Nevada Nuclear Waste Storage Investigations]

Transport and reaction kinetics at the glass:solution interface region: Results of repository-oriented leaching experiments

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