The HTR TRISO particle consists of a fissile kernel and surrounding layers, whose density and thickness are among the key fuel parameters. Destructive methods i.e. the sink float method and image analysis of ceramography, were developed in the past and are still used to evaluate these particle parameters. Although exhibiting great accuracy, these methods generate effluents and wastes, and are extremely cost/time consuming. In the framework of the AREVA NP HTR R&D program, the development of nondestructive evaluation methods as alternatives to destructive methods is carried out and aims at a new HTR Fuel QC strategy. In this scope, an innovative method was developed to automatically measure particle layer density and thickness from X-Ray Phase Contrast Imaging (PCI). First tested at the European Synchroton Radiation Facility (ESRF), this method was then applied to a custom built industrial demonstrator. Comparisons between the density and thickness values obtained by the developed method and their corresponding values obtained with destructive methods justify progressing to the validation phase. Particle samples were selected among the particle batches that were characterized by destructive methods. Layer density and thickness were determined by the X-Ray based technique on the industrial demonstrator as well as at the ESRF. Correlation levels obtained from this benchmark demonstrated that both parameters can be confidently measured by the developed method. Additionally, it is important to stress that this technique provides the opportunity to directly determine buffer density on finite particles as opposed to the sink float method. Thanks to its accuracy, its rapidity and its absence of waste generation, it is planned to implement the X-Ray thickness and density measurement method on the French lab scale fuel line. It was also decided to enter the characterization work package of the IAEA Coordinated Research Project 6 in order to benchmark the AREVA NP method with foreign techniques and materials.
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Fourth International Topical Meeting on High Temperature Reactor Technology
September 28–October 1, 2008
Washington, DC, USA
Conference Sponsors:
- ASME
ISBN:
978-0-7918-4854-8
PROCEEDINGS PAPER
X-Ray Radiography: An Alternative Method for Determining HTR Fuel Particle Coating Layer Thickness and Density Available to Purchase
Julien Banchet,
Julien Banchet
AREVA NP, Chalon sur Saoˆne, France
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David Tisseur,
David Tisseur
AREVA NP, Chalon sur Saoˆne, France
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Pierre Guillermier
Pierre Guillermier
AREVA NP, Lyon, France
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Julien Banchet
AREVA NP, Chalon sur Saoˆne, France
David Tisseur
AREVA NP, Chalon sur Saoˆne, France
Pierre Guillermier
AREVA NP, Lyon, France
Paper No:
HTR2008-58091, pp. 279-283; 5 pages
Published Online:
July 1, 2009
Citation
Banchet, J, Tisseur, D, & Guillermier, P. "X-Ray Radiography: An Alternative Method for Determining HTR Fuel Particle Coating Layer Thickness and Density." Proceedings of the Fourth International Topical Meeting on High Temperature Reactor Technology. Fourth International Topical Meeting on High Temperature Reactor Technology, Volume 1. Washington, DC, USA. September 28–October 1, 2008. pp. 279-283. ASME. https://doi.org/10.1115/HTR2008-58091
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