Static leaching of actinides and fission products from fully radioactive waste glass of HLLW generated in Tokai Reprocessing Plant
Miyahara, Kaname ; Ashida, Takashi ; Sasaki, Noriaki; Yusa, Yasuhisa; Tsunoda, Naomi
Fully radioactive waste glass of HLLW generated in Tokai Reprocessing Plant was produced by using a small Joule-heated ceramic melter at the Chemical Processing Facility (CPF), Tokai Works, PNC, Japan. Static leach tests using the glass were carried out in doubly distilled water for a period of up to three months at 30C and 90C. Gamma spectrometry was performed to measure Cs, Cs and Co in the leachates. After the chemical separation of Cs isotopes in the leachates, it was newly possible to measure Sb, Ce, Eu and Eu. Alpha spectrometry was performed to measure Pu + Pu, Am and Cm in the leachates. Adsorption of the actinides on the wall of the leach vessel was recognized in all cases. Leaching behavior of the measured radionuclides were evaluated by considering mass balance of the radionuclides which were leached.