b'1.3 SHOWCASE CAPABILITIESTREAT Flowing Sodium Loop CartridgePrincipal Investigator: Nicolas Woolstenhulme (INL)Team Members/ Collaborator: Bryce Kelly, Greg Core,Matthew Johnson, Cole Blakely, Cody Hale, Aaron Epiney,Brandon Dalley (INL); TerraPower, LLC.The TREAT NLC willH istorically, flowing sodiumwork discussed above, successful execu-loop cartridges were criticaltion of this project requires significant afford the domestic andin meeting advanced reactorhistorical data mining, and nuclear international fuel safetyfuel safety testing needs at the Transientsafety and TREAT interface/facility testing community theReactor Test Facility (TREAT) at therequirements gathering. INL chose unique capability toMaterials and Fuels Complex (MFC).TerraPower, LLC as a key collaborator test various sodium- The recent resumption of the US fuelin the execution of the project due to cooled fast reactorsafety testing program created the needthe organizations resource expertise (SFR) fuel designs atto reestablish this capability and enablein sodium-cooled reactors. TerraPower prototypic conditions offurther research efforts into the behaviorwill design, fabricate, and operate a specific SFR design. of sodium fast reactor fuels in prototypicthe test and prototype loops allowing environments.informative component-specific and Project Description: integrated testing. The prototype loop To successfully reestablish sodium- thermal hydraulic performance test cooled fuel safety transient testingresults will be used to finalize an capability for the TREAT, Idaho Nationalequipment specification for a modern-Laboratory (INL) initiated a projectized, reactor-grade TREAT sodium test that includes developing requirements,loop cartridge (NLC) design. Upon establishing a test loop, designing adesign finalization, the reactor-prototype loop, fabricating a prototypeready TREAT NLC will be fabricated, loop including Annular Linear Induc- inspected, and qualified to support tion Pump (ALIP) development, andexperimental fuel safety testing. The demonstrating in-laboratory prototypereactor-ready NLC will provide the performance via an extensive testingcapability to test metallic and oxide program. In addition to the physicalfuels in a heated flowing sodium environment supporting both domestic and international testing needs.Accomplishments:Fiscal year 2019 included numerous high-level goals for the project such as Figure 1. Model of the prototypecompleting a thorough requirements Annular Linear Induction Pumpgathering phase, creating a func-(ALIP) to be installed in the NLC. tional and operational requirements (F&OR) document for the prototype and reactor-ready NLCs, performing equipment trade studies, establishing 14 2019|AFC ACCOMPLISHMENTS'