Development of actinides co-extraction system with direct extraction process using super-critical fluid

Koyama, Tomozo

In order to establish improvement of aqueous reprocessing technology in economy and waste reduction, JAEA has been developing "Actinides co-extraction system with direct extraction process using supercritical carbon dioxide" in collaboration with Nagoya University and ARTECH Co.Ltd. as nuclear system research and development application program by MEXT since 2005. Measurement of distribution factors of major fission product elements and confirmation of supercritical fluid behavior have been executed. In JFY 2007, distribution factors will be continuously measured and direct extraction test of unirradiated MOX in normal pressure will be carried out. In JFY 2008-2009, direct extraction test of unirradiated MOX and irradiated fuel will be executed using supercritical carbon dioxide in a glovebox and a cell.