Investigation of possible non-destructive assay (NDA) techniques for at the future Swedish encapsulation facility

• Main Author: Lundkvist, Niklas
• Format: Others
• Language: English
• Published: Uppsala universitet, Tillämpad kärnfysik 2012
• Subjects: Encapsulation facility; Non-destructive assay; Next generation safeguards initiative; Spent nuclear fuel; Spent fuel repository; Physical Sciences; Fysik
• Online Access: http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-178133

A geological repository for spent nuclear fuel (SNF) and an associated encapsulation facility will be built in Sweden.  The encapsulation facility is planned to be in operation in 2025 and it will be the last place where verifying safeguards measurements of SNF can be performed. It is not clear what types of measurements that will be performed, because such requirements are not yet posed by national and international authorities and inspecting organizations. This report describes the objective and most recent results of a master thesis project, whereby a few existing non-destructive assay techniques for verifying SNF are selected for a review. The study focuses on the verifying ability of different techniques, or system of techniques in relation to the requirement that may be put on the future encapsulation plant. In addition, possible needs for future simulations and measurements are discussed. The work is done as a collaboration between Uppsala University in Sweden and Los Alamos National Laboratory in the USA.