b'Figure 2. SATS installed in ORNL hot cellAccomplishments: Examination Laboratory, as shown The design and construction of thein Figure 3.tFGR system were completed inDuring a tFGR test, helium sweep FY 2023. The system is designed togas is metered through a mass flow integrate with the existing SATS,controller. It then passes through the as illustrated in Figure 1. The tFGRhot-cell wall and enters the bottom of system consists of a sweep gasthe quartz tube that contains the test system to transport gases from thespecimen. As fission gas (krypton-85) in-cell SATS apparatus (Figure 2) tois released from the test specimen an out-of-cell fission gas detectionduring heating, it mixes with the system composed of a series of coldsweep gas and exits the quartz traps to capture the off-gas fromtube at the top. Then it passes back the heating tests. It also includesthrough the hot-cell wall and on to a gamma spectrometry system tothe moisture trap assembly located detect and measure krypton-85.on the tFGR table. When the mixed Initial system testing opera- gases pass through the moisture tions have been completed, andtrap, any water vapor present in the krypton-85 collection and measure- sweep gas stream will be removed, ment were verified along with theand fission gases and helium will ability to detect stable inert gases.pass on to the cold-trap assembly. The new tFGR system has been setThe cold-trap assembly contains up in the ORNL Irradiation Fuela column of activated charcoal 2023|AFC ACCOMPLISHMENTS 95'