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|Title:||Qualification of HTR Pebbles by X-ray Tomography and Thermal Analysis|
|Authors:||HANIA Ralph; JANSSEN Bas; FEDOROV A. V.; DE GROOT Sander; METTEN Lango; VAN DE SANDE Alan; FUETTERER Michael; NABIELEK Heinz|
|Citation:||Proceedings of HTR 2010 p. Paper 101 (1-6)|
|Publisher:||The TERIS company|
|Type:||Articles in periodicals and books|
|Abstract:||Knowledge of the TRISO particle distributions inside HTR fuel pebbles or compacts may help manufacturers to improve the quality of their fuel, by providing a selection criterion for individual pebbles, as well as by providing feedback during the development phase. In a joint program, NRG and JRC-IE develop a fast method to obtain these distributions nondestructively, based on X-ray tomography. The coordinates of the individual TRISO particles are extracted from a tomographic reconstruction of a pebble. Statistical representations of the particle distribution are made. The temperature distribution inside the pebble is then determined by assigning a power to each particle, using the edge temperature as a boundary condition. This procedure is applied to 31 pebbles fabricated in the framework of the German HTR fuel qualification program.|
|JRC Institute:||Energy, Transport and Climate|
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