Argonne’s METL gears up to test more sodium fast reactor components

April 25, 2025, 1:47PMNuclear News
Work on Argonne's METL sodium test loop. (Photo: Argonne National Laboratory)

Argonne National Laboratory has successfully swapped out an aging cold trap in the sodium test loop called METL (Mechanisms Engineering Test Loop), the Department of Energy announced April 23. The upgrade is the first of its kind in the United States in more than 30 years, according to the DOE, and will help test components and operations for the sodium-cooled fast reactors being developed now.

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