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Home   /   Post Doctorat   /   Molten salt test reactor for multiphysics experiments

Molten salt test reactor for multiphysics experiments

Abstract

Molten salt reactors (MSR) use a circulating liquid fuel salt instead of a solid fuel and a circulating coolant. The salt plays the role of both fuel and coolant. Thus, nuclear feedback reactions are intermingled with the salt circulation thermohydraulics effects.

Historically, the development of a new nuclear reactor technology was always based on zero-power neutron physics experiments, small-scale reactor mock-ups, material test reactors and technological test systems. Thermohydraulic feedback effects were extrapolated to a full-scale power plant thanks to parametric studies.

In the specific case of MSR technology, and because of the fuel and coolant deep coupling, the design of a test reactor has to be thought of differently. The postdoc main objective will be to address the following question: what would be the main characteristics (size, temperature and power) of a fast molten salt test reactor in which coupled neutronics-thermohydraulics experiments relevant for MSR full-scale validation studies could be performed?

The first task will be to perform a state-of-the-art study of MSR experimental validation and needs. Existing coupled nuclear-thermohydraulic data relevant to MSR shall be evaluated, while the lack of validation experiments will be highlighted. Using functional analysis, the postdoctoral fellow will establish scaling criteria for designing relevant coupled nuclear-thermodydraulic experiments. Finally, a test MSR core which could host such experiments will be sketched and sized.

Laboratory

Département Etude des Réacteurs
Service de Physique expérimentale, d’essais en Sûreté et d’Instrumentation
Laboratoire des programmes expérimentaux et d’essais en sûreté
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