Encapsulation of Spent Nuclear Fuel in Ceramic Materials. An Introductory Study

摘要

The international situation with regard to disposition of spent nuclear fuel is surveyed, with emphasis on encapsulation in ceramic materials. The feasibility and advantages of ceramic containers, thermodynamically stable in groundwater, are discussed as well as the possibility to ensure that stability for longevity by engineered measures. The design prerequisites are summarized and suggestions are made for a conceptual design, comprising rutile containers with stacks of coiled fuel pins. A novel technique is suggested for the homogeneous sealing of rutile containers at low temperatures, acceptable also for the fuel pin package. Key points are given for research, demonstration and verifications of the design foundations and for future improvements, of which a few ideas are exemplified. (Atomindex citation 16:077205)