Overview
ABSTRACT
Born in the late 1950s, the concept of millimeter-sized fuel particles is reference design for high or very high temperature gas-cooled reactors. The specificity of this fuel is that it is finely divided, all-ceramic and micro-confined; these three characteristics allowing for access to high temperatures and at high level of safety.
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Michel PELLETIER: Engineers at the French Atomic Energy Commission
INTRODUCTION
Born in the late 1950s, the millimeter-sized particle fuel concept is the benchmark for High or Very High Temperature gas cooled reactors (HTR/VHTR). The specificity of this fuel is that it is finely divided, all-ceramic (fuel and cladding layers) and micro-confined (confinement of actinides and fission products takes place as close as possible to the source), these three features combined enabling both access to high temperatures and a high level of safety (dossier BN 3 190, High-temperature reactors, § 4, safety).
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Particulate fuels for high-temperature reactors
Fuel presentation
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