Optimization of light water reactor High Level Waste disposal scenario in the situation of delayed reprocessing with existing and demonstrated technology. (1st September 2020)

• Record Type: Journal Article
• Authors: Fukaya, Yuji
• Is Part Of: Annals of nuclear energy. Volume 144(2020)
• Publication Date: 2020-09-01
• Subjects: HLW -- LWR waste -- P&T -- Delay of reprocessing -- Waste volume reduction; Nuclear energy -- Periodicals; Nuclear engineering -- Periodicals; 621.4805
• DOI: 10.1016/j.anucene.2020.107503
• Languages: English
• ISSNs: 0306-4549

Abstract

Highlight: We optimized disposal scenario of LWR HLW with considering delay of reprocessing. Optimization was performed with burn-up and repository temperature calculations. The combination of high-waste-loading glass and cold crucible induction melter is proposed. Optimized case can achieve approximately half of waste volume reduction of non-P&T case. Abstract: Disposal scenario of High Level Waste (HLW) of Light Water Reactor (LWR) have been optimized to reduce waste volume and repository footprint in geological disposal. The optimization was performed with existing and demonstrated technology in the situation where the reprocessing will be delayed. In general, the scenario with Partitioning and Transmutation (P&T) is optimized to minimize waste package number generated in the situation where the spent fuel will be reprocessed immediately with the minimum cooling time. With considering the delay of reprocessing, it is found that the more simplified and effective optimization with the high-waste-loading glass and cold crucible induction melter technologies and without partitioning. The optimized case can achieve significant reduction of number of waste package generation and the repository footprint to half of those of non-P&T case with 100 years cooling.