b'welding techniques to ensure a2.The I-Loop X-Core System is allFigure 3. I-Loop test train installed in an successful fabrication. Addition- the equipment outside of theI-Loop tube ally, a stainless-steel prototypereactor vessel, e.g., pumps, heat (Figure 2) was fabricated andexchangers, valves, and piping installed to INLs flowing auto- (Figure 4). This system includes clave loop for laboratory testinga series of sub-systems such as in FY2023 with great success.loop makeup, ion exchange/The stainless-steel prototypefiltrations, sampling, and loop demonstrated that an I-Loopchemistry. A major accomplish-Test Train could be success- ment in FY2023 has been the fully inserted/removed I-Loopcompletion of the conceptual Tube and maintain mechanicaldesign of a purification system. integrity of the componentsThe purification system is prototype (Figure 3). Hydrody- designed to clean-up a fission namic testing of the stainless- product release from testing steel prototype also allowedspecimens in off-normal condi-the designers to gain valuabletions. This represents a major measurements to inform thecapability of the I-Loop system.overall loop design. 2023|AFC ACCOMPLISHMENTS 197'