Waste glass composition

TABLE I. Fully Radioactive Waste Glass Composition... 

Ellison AJG, Navrotsky A (1990) Thermochemistry and stmcture of model waste glass compositions. In Scientific Basis for Nuclear Waste Management Xlll. Oversby VM, Brown PW (eds). Mater Res Soc SympProc 176 193-207... 

Vance, E. R., Carter, M. L., Day, R. A., Begg, B. D., Hart, K. P. Jostsons, A. 1996b. Synroc and Synroc-glass composite waste forms for Hanford HLW immobilization. In Proceedings of the International Topical Meeting on Nuclear and Hazardous Waste Management SPECTRUM 96. American Nuclear Society, Inc. La Grange Park, 2027-2031. 

This section is primarily intended to show that the relevant combination of the intrinsic physico-chemical and microscopic characteristics of HT materials, their behaviour under aggressive conditions of corrosion, and their modelled thermodynamic stability, yields a sound composite picture of these materials. On the basis of the knowledge acquired over decades on high-level nuclear waste glasses (Vernaz Dussosoy 1992 Bates et al. 1994 Thomassin 1995, 1996 Ewing 1996), these are the key parameters that may drastically influence the long-term durability of HT materials. 

Darab, J. G., Feng, X., Linehan, J. C., Smith, P. A. Roth, 1. 1996. Composition-structure relationships in model Hanford low-level waste glasses. Ceramics Transactions, 72, 103-110. 

Pirlet, V. 2001. Overview of actinides (Np, Pu, Am) and Tc release from waste glasses influence of solution composition. Journal of Nuclear Materials, 298, 47-54. 

Sodium-rich glass compositions tested in single-pass flow-through (SPFT) apparatus at Pacific Northwest National Laboratory support the low-activity waste (LAW) glass disposal... 

The leach rates seen here can be compared to those from a similar test on simulated waste glass of the same composition. The leach rates for cesium and strontium from the fully radioactive Rlass were the same as the leach rates of the simulated glass. Although both tests were done on bulk glass samples, they differed in configuration. The fully radioactive samples were disks cm (height) x 3.5 cm (diameter)], and the... 

The release rate was determined for 10 radioisotopes from fully radioactive waste glasses in deionized water for a period of 1.75 years. For cesium and strontium, good agreement exists between the leach rates for simulated and fully radioactive glass of the same composition. 

Figure 8. Auger surface spectrum of a corroded nuclear waste glass together with its compositional profile. Conditions (top and bottom) PNL glass composition 76-68, 90°C for 3 d in HgO, SA/V = 0.1 cm 1. Key (top) Si - 75 eV, B —...

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