This paper illustrates the benefits of hot isostatically pressed (HIPed) tailored ceramic waste forms for the immobilisation of Cs and Sr separated from spent nuclear fuel. Experimental data on microstructure and aqueous durability are presented for Cs- and Sr-bearing hollanditerich tailored ceramics prepared with 12-18 wt% waste (on an oxide basis). MCC-1 type leach testing, on the sample containing 12 wt% waste at 90°C for 28 days revealed extremely low normalised 7-28-day Cs and Sr release rates of 0.003 and 0.004 g/m2day respectively.
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Melody, L.C., Vance, R.E. HIPed Tailored Ceramic Waste Forms for the Immobilisation of Cs and Sr. MRS Online Proceedings Library 1107, 323 (2008). https://doi.org/10.1557/PROC-1107-323