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September 1, 2016 鈥� Fluoride salt-cooled high-temperature reactors are a promising design in the next generation of nuclear energy production, and one of the first steps from concept to reality is underway at Oak Ridge National Laboratory. A team led by ORNL鈥檚 Graydon Yoder Jr. is operating a test loop to see how fluoride salts would perform in transferring heat from the FHR鈥檚 core. 鈥淚t鈥檚 the first high-temperature fluoride salt pumped test loop facility in the U.S. since the 1970s,鈥� Yoder said. 鈥淭he loop can provide useful information to reactor developers showing that liquid salt heat transfer meets performance goals and safety requirements.鈥� The FHR would provide temperatures well above 600 degrees Celsius, which increases energy efficiency while maintaining a low pressure because the fluoride salt is far from its boiling point. The research team is also testing other new concepts, including silicon carbide as a piping component and a dry rotating gas seal design.