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Showing 1 to 4 of 4 for “"kernel migration"”.
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Analysis of U-Zr-C-O Quaternary System for Applications in Advanced ZRC Coated Triso Particles
… Temperature Reactor (VHTR) conditions to prevent kernel overpressurization and kernel migration has been proposed by several researchers. Analysis is performed incorporating first-principles thermodynamics along with out-of-pile experimental work. UO<sub>2+x</sub>-U<sub>4</sub>O<sub>9</sub> …
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The Effect of Coating Parameters On Advanced TRISO Fuels With Zirconium Carbide
… are not limited to over pressurization of the kernel due to fission gas buildup as well as kernel migration, in the presence of a temperature gradient, known as the amoeba effect. To negate these problems a solution of adding a ZrC gettering layer between the kernel and PyC buffer layer has …
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Coating Parameters of Zirconium Carbide On Advanced Triso Fuels
… layer of ZrC applied directly to the UO2 fuel kernel. The additional ZrC layer will act as an oxygen getter to prevent failure mechanisms experienced in TRISO particles. Two failure mechanisms that are of the most concern are the over pressurization of the particles and kernel migration within …
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Thermodynamic and Thermochemical Investigation of Advanced Triso Coated Particle Fuels
… specific problems such as overpressurization, kernel swelling, kernel migration, and/or attack of fission products since the 1970s. Thermochemical modeling can increase understanding of this advanced fuel. The modeling of binary systems and ternary systems of the nuclear fuel has been studied …