2024 Annual Meeting
Mar 26 - Mar 28, 2024Kindai University Higashiosaka Campus
2024 Annual Meeting
Mar 26 - Mar 28, 2024Kindai University Higashiosaka Campus
[1A06]Impact on geological disposal due to prolonged cooling period of spent fuel before reprocessing and study of mitigation measures(3) Effects for the re-saturation phenomena of buffer material
*Masakazu Chijimatsu1, Takao Ikeda2, Yasuhiro Suyama3, Susumu Tosha4, Kazuyoshi Takenobu5, Susumu Sakashita6, Junji Imai7, Atsushi Horio8, Takamasa Kanda9, Takashi Takei10(1. Hazama Ando Corporation, 2. JGC JAPAN, 3. Kajima, 4. IHI, 5. ATK, 6. OYO, 7. JX Metals R.E.&D., 8. Dia Nippon Engineering Consultants, 9. Maeda, 10. ENAA)
Keywords:
Geological disposal,Vitrified waste,Cooling period before reprocessing,Buffer material,Re-saturation phenomena
It is known that engineered barrier temperature and safety are affected by changes in the radioactive inventory of the vitrified waste and changes in heat generation due to the prolonged cooling period before reprocessing of spent fuel. Therefore, we investigated the effect of the prolonged cooling period before reprocessing of spent fuel on the re-saturation behavior of buffer materials. As a result of the evaluation by coupled thermal and hydraulic analysis, although there was a large difference in the temperature change inside the buffer, the re-submersion time did not change significantly.