Demonstration of pu immobilization in synroc at the 50g of PuO{sub 2} scale
The immobilization of 13.5 wt% PuO{sub 2} in a zirconolite-rich Synroc has been demonstrated at the 50 g PuO{sub 2} scale in cans produced by hot isostatic pressing (HIPing) at 1280 C. The wasteform also contains more than an equimolar amount of neutron poisons such as Gd, Sm and Hf. The scale-up technology for production of Pu-containing cans of Synroc by HIPing has been demonstrated at the 10 kg scale using CeO{sub 2} as an analog for PuO{sub 2}. The characterization of the products has shown that Ce is a good analog for Pu in zirconolite-rich Synroc produced by HIPing. Post-production thermal tests simulating the effects of a HLW glass pour in a surrounding canister have shown that the Synroc is stable and there is no exsolution of PuO{sub 2} or CeO{sub 2}.
- Research Organization:
- Lawrence Livermore National Lab., Livermore, CA (US)
- Sponsoring Organization:
- US Department of Energy (US)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 15007247
- Report Number(s):
- UCRL-CR-139054
- Country of Publication:
- United States
- Language:
- English
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