Spent Nuclear Fuel Management

©  A Carl Willis Joint

Along with nuclear safety, spent nuclear fuel is a challenge to the sustainability of nuclear power. Until now, no market-ready solutions have been developed. Countries with nuclear power including Republic of Korea are demanding game-changing innovations on spent nuclear fuel management. Spent nuclear fuel management is closely associated with types of reactors deployed, nuclear fuel cycle, and social systems utilizing the nuclear power. The desire to understand this real-world interaction motivates us to study these problems with a careful attention to both technical solutions and their policy implications. Our research goal is to develop a nuclear fuel cycle system for spent nuclear fuel management while ensuring nuclear nonproliferation and minimizing environment impact. This system should leave no unnecessary burden for the future generations. To achieve this goal, it is necessary to attain a deep understanding of complex reaction mechanisms of radionuclides in a multi-phase multi-component recycling system.

Recycling of Spent Nuclear Fuel using High Temperature Electrochemistry

Project Description : Molten-salt electrochemistry has been developed as a potential option for treating spent nuclear fuel. This process uses a high-temperature molten-salt electrolyte to recover actinide as a group from fission products. During the process, multiple phases such as oxide, solid metal, liquid metal, and molten-salt often co-exist. Understanding the interface reactions of actinide and fission products across the multiple phases is critical.

On-going projects : High Temperature Oxide Reduction, Reference Electrode in High Temperature Environment

Multi-physics Evaluation of Fuel Cycle Options and Waste Disposal Systems

Project Description : Optimizing nuclear energy systems requires comprehensive assessments based on technical, economic, environmental, nonproliferation, and social considerations. As the final step of nuclear fuel cycle, disposal systems are closely linked with these criteria. The evaluation of fuel cycle options and waste disposal systems requires multi-physics modeling and simulation. The multi-physics analysis is to evaluate the impacts of storage and recycling options and to support the innovative designs of new disposal concepts.

On-going projects : Inter-generation Justice of Nuclear Fuel Cycle

291 Daehak-ro, Yuseong-gu, Daejeon 34141,

Korea Advanced Institute of Science and Technology (KAIST)

Department of Nuclear & Quantum Engineering, Republic of KOREA

 

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K&FC Lab.