SMRTR Science & EngineeringMay 12, 2026Interesting Engineering

US scientists unlock critical molten salt reactor data for future nuclear energy

SMRTR summary

Scientists at Oak Ridge National Laboratory have collected rare measurements of how uranium-bearing molten salts transfer heat and flow, filling critical data gaps that have slowed nuclear reactor development for years. Using two specialized tools — a variable gap system and a rolling ball viscometer — researchers measured thermal conductivity and viscosity, key properties needed to design and license safer molten salt reactors that could deliver carbon-free electricity.

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