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LLNL, Ampera partner to develop thorium-based TRISO fuel
Lawrence Livermore National Laboratory has formed a strategic partnership with Ampera to develop the company’s nuclear fuel concept through a project named THUNDER, for Thorium Unimodal Droplet Ejection for Reactors.
The focus of THUNDER is fabricating TRISO made with kernels of thorium rather than the usual uranium. LLNL and Ampera will evaluate and optimize liquid metal–jetting technology to produce highly uniform, spherical kernels of thorium-232 for later processing into TRISO fuel.
Aamir Husain
Nuclear Technology | Volume 85 | Number 1 | April 1989 | Pages 66-73
Technical Paper | Chemical Processing | doi.org/10.13182/NT89-A34228
Articles are hosted by Taylor and Francis Online.
A regenerative process involving the use of a dilute solution of nitric (0.5 to 1.0 wt%) and hydrofluoric (0.05 wt%) acids was developed for decontaminating stainless steels (Type 304) to release limits. The solution is regenerated using a strong acid cation exchanger and may eventually be disposed of after processing through a strong base anion exchanger. The waste management aspect of the decontamination is thus limited to the disposal of relatively small volumes of spent cation and anion exchange resins. Application of the acidic reagent for 1 hat 95°C to the tray surfaces of an obsolete irradiated fuel storage basket from Pickering Nuclear Generating Station resulted in the removal of metal exceeding 1 µm and a residual (β,γ) contamination below a target limit of 0.1 µCi/m2. A soak tank system with associated purification, vapor handling, and auxiliary systems is proposed for performing full-scale decontaminations of the baskets.