Depleted uranium formation

Miller, A.C., Brooks, K., Stewart, M., Anderson, B., Shi, L., McClain, D., Page, N. (2003). Genomic instability in human osteoblast cells after exposure to depleted uranium delayed lethality and micronuclei formation. J. Environ. Radioact. 64 ... 

The formation of harder neutron spectrum has been influenced by LBC using, thus the higher value of CBR has been provided, which has had a key part in reaching the EUU biggest value. The calculations have demonstrated that for sodium coolant, which can moderate neutrons more effectively, it is hard to provide the reactor criticality if it has been made up by depleted uranium. 

Melt and dilute. The spent fuel is melted and diluted with depleted uranium. This process was developed at the Savannah River Technology Center (SRTC), USA, and involves melting of the entire spent fuel assembly, diluting the uranium alloy with depleted uranium for isotopic dilution and aluminium for eutectic formation. 

Fig. 32. PAAS-normalized lanthanide patterns for early Proterozoic uranium deposits from the Pine Creek Geosyneline, Australia (data are from McLennan and Taylor 1979). Compared to the unmineralized host sedimentary roek, these deposits are extremely enriched in heavy lanthanides and depleted in light lanthanides. The abundances and amount of fractionation is related to the U content, suggesting the lanthanide mobility and U mineralization are directly related, thus helping to constrain the origin of the deposit. The fractionation of Sm and Nd during ore-formation allows dating by the Sm-Nd method.

CEA and AREVA NC have developed and used a depletion code named CESAR for 30 years. This user-friendly industrial tool provides fast characterisations for all types of nuclear fuel (PWR / UOX or MOX or reprocess Uranium, BWR / UOX or MOX, MTR and SFR) and the wastes associated. CESAR can evaluate 100 heavy nuclides, 200 fission products and 150 activation products (with Helium and Tritium formation). It can also... 

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