Safeguarding advanced Generation IV reprocessing facilities Challenges, R&D needs, and development of measurements M. Åberg Lindell*, A. Håkansson, P. Andersson, S. Grape Uppsala University * matilda.aberg-lindell@physics.uu.se Session 03, M. Åberg Lindell et al.
Reprocessing and safeguards • Challenges – Extensive fuel handling – Various material types – Bulk handling facilities – Measurement uncertainties – Timeliness – Resource-intensive Example: Rokkasho Reprocessing Plant Session 03, M. Åberg Lindell et al.
Reprocessing and safeguards X • DA samples • On Site Lab • IAEA inspector always present Resource intensive Session 03, M. Åberg Lindell et al.
Gen IV recycling • New fuel compositions • Increased fuel handling • Pyroprocessing – Limited experience – Harsh environment in hot cells • Aqueous reprocessing Example: GANEX – New flowsheets • Demands large resources if widely implemented Session 03, M. Åberg Lindell et al.
Gen IV recycling X • Group ActiNide Extraction (GANEX) • No pure Pu stream • MA-bearing fuel Session 03, M. Åberg Lindell et al.
Gen IV safeguards development • Current R&D – Complement traditional safeguards methods (e.g. C/S, DA) with new NDA technologies – Online and remote monitoring – Various spectroscopic technologies Session 03, M. Åberg Lindell et al.
Planned photon measurements • Measurements planned for late 2014 – At Chalmers University of Technology, Sweden • Gamma radiation from dissolved spent LWR fuel – BU: 41 GWd/tU, CT: 40 years – Fuel representing start-up phase of Gen IV system Gen IV fuel cycle • Laboratory scale Ganex process – Measurement points Flowsheet • Difficulties – Fission products – Low gamma energies from actinides Example spectra – Small quantities (~ 1 g) – low count rate Session 03, M. Åberg Lindell et al.
Gen IV fuel cycle X Session 03, M. Åberg Lindell et al.
GANEX flowsheet X Session 03, M. Åberg Lindell et al.
Example gamma spectra X Actinides emit low-energy gammas Dissolved fuel Extracted actinides with traces of FP Session 03, M. Åberg Lindell et al.
Performed simulations • Preparation for measurements • Modeling of: – Fuel composition – Experimental setup – Radiation – Detector response • Software – Origen (Burn up and decay) – MCNP (Radiation and detector modeling) Session 03, M. Åberg Lindell et al.
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