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Applying fast calorimetry on a spent nuclear fuel calorimeter
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics. (Nuclear Fuel Diagnostics and Safeguards Group)
2015 (English)Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

Recently at Los Alamos National Laboratory, sophisticated prediction algorithms have been considered for the use of calorimetry for treaty verification. These algorithms aim to predict the equilibrium temperature based on early data and therefore be able to shorten the measurement time while maintaining good accuracy.


The algorithms have been implemented in MATLAB and applied on existing equilibrium measurements from a spent nuclear fuel calorimeter located at the Swedish nuclear fuel interim storage facility. The results show significant improvements in measurement time in the order of 15 to 50 % compared to equilibrium measurements but cannot predict the heat accurately in less time than the currently used temperature increase method can. This is both due to uncertainties in the calibration of the method as well as identified design features of the calorimeter that limits the usefulness of equilibrium type measurements.


The conclusions of these findings are discussed and suggestions of both improvements of the current calorimeter as well as what to keep in mind in a new design, are given.

Place, publisher, year, edition, pages
2015. , 44 p.
UPTEC F, ISSN 1401-5757 ; 15005
Keyword [en]
Nuclear Fuel Calorimetry Measurements
National Category
Accelerator Physics and Instrumentation
URN: urn:nbn:se:uu:diva-248534OAI: oai:DiVA.org:uu-248534DiVA: diva2:799746
External cooperation
Los Alamos National Laboratort & Swedish Nuclear Fuel and Waste Management Company
Educational program
Master Programme in Engineering Physics
Available from: 2015-07-06 Created: 2015-03-31 Last updated: 2015-07-06Bibliographically approved

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