Since 18 of December 2019 uses Nucleus credentials. Visit our help pages for information on how to Register and Sign-in using Nucleus.
Apr 19 – 22, 2022
Vienna, Austria
Europe/Vienna timezone
FR22 starts in Vienna 19 - 22 April 2022 Online Stream:

Mechanisms Engineering Test Loop (METL) Facility

Apr 20, 2022, 2:28 PM
Vienna, Austria

Vienna, Austria

ORAL Track 5. Test Facilities and Experiments 5.1 Experimental Reactors and Facilities


Mr Christopher Grandy (Argonne National Laboratory)


The purpose of this paper is to present the Mechanisms Engineering Test Loop (METL) facility installed at U.S. DOE’s Argonne National Laboratory located outside of Chicago, Illinois. The METL facility is a multipurpose intermediate-scale 750-gallon (2839l) sodium test facility used for the testing of liquid metal systems and components in prototypic reactor-grade sodium conditions. Some examples of technologies that can be tested in METL include: components for advanced fuel handling systems, advanced sensors and instrumentation, in-service inspection and repair technologies, thermal hydraulic testing in a prototypic environment, components for reactivity control, and health monitoring technologies for liquid metal reactor applications. METL also provides development opportunities for younger scientists, engineers, and designers who will ultimately lead the advancement of U.S. liquid metal technologies. The hands-on experience with METL, both successes and perceived failures; will ultimately lead to better liquid metal technology programs that can support the commercialization of advanced reactors.
The METL facility consists of two 18-inch (45.7-cm) test vessels, two 28-inch (71.1-cm) test vessels, an expansion tank, a dump tank, a purification loop, and a plugging loop. METL has a main piping loop that includes an electromagnetic pump and flow meter. This main loop provides flowing sodium to the four test vessels. The test vessels can be connected to the main loop in parallel operation or a test vessel can be isolated from the main loop with its own sodium environment. Each test vessel can be drained independently to the dump tank without affecting the other on-going testing. The facility has a maximum operating temperature of 1000°F (537.7°C) with the larger test vessels capable of obtaining 1200°F (648.8°C). 15 55-gallon (208l) drums of sodium was transferred to the dump tank in April 2018. Sodium piping, purification, plugging loop and expansion tank was filled in September 19, 2018. The facility has been in an operational state for over two years. This paper discusses the overall design philosophy of the facility, the testing that has been performed in the facility, and the approaches used for inserting test articles (experiments) into and removing test articles from the facility.

Speaker's email address
Affiliation/Organization Argonne National Laboratory
Speaker's title Mr
Country/Int. organization United States of America

Primary authors

Mr Christopher Grandy (Argonne National Laboratory) Mr Derek Kultgen (Argonne National Laboratory) Mr Edward Kent (Argonne National Laboratory) Dr Matthew Weathered (Argonne National Laboratory)

Presentation materials

Peer reviewing