b'rod segments with crucial instru- advanced SMR fuels). Sustaining and With less than halfmentation. Loss of the HBWR alsoenhancing the LWR testbed investment of the reactors thatcaused a general reduction of testwill require steadfastness and strategic were available inthroughput for various needs. As agrowth to ensure that data capabilities the past, the Unitedresult, a second wave of capabilityare made available and retained for States LWR Testbeddevelopment is now well underwayfuture LWR technology developments. stands poised toto reclaim the HBWR gaps withinIn this regard, further opportunities support the samedomestic infrastructure including: have also been identified as candi-diversity of test A reflector-based loop at ATR (I- dates to be considered for their role conditions and dataLoop) to enable tests with powerin enhancing data throughput and needs to supportramping and coolant voiding. technology developments including:development of Blowdown capsule for LOCA testing Accelerated fuel testing capsules at ATR advanced LWR fuels in TREAT. and expanded capabilities at HFIRand materials.Hot cell-based competenciesInstallation of a second cladding for instrumenting irradiated corrosion water test loop at MITRrod segments.Flowing water loop in TREATAs soon as the HBWR gaps are filled, Expansion of ATR capacity to 2 or the testbed should be able to supportmore I-Loopsfull deployment of evolutionary Thermosyphon for LWR fuel/ATF (coated-Zr, doped-UO 2 ) andmaterial irradiations at high flux HBu license extensions The testbed,with representative coolant exposure however, will need to be main- in HFIRtained to support post-deploymentPrioritization, strategic planning, optimization of technologies whileand commissioning of the necessary supporting development of trulycapability development projects, advanced fuel/cladding designs (e.g.,along with their integration into SiC/SiC composite cladding, high- the broader testbed and transition density/composite fuels) and otherto programmatic data production, advancements needed to maintain theremains a prominent effort for AFC.vitality of water-cooled reactors (e.g., 20 2021|AFC ACCOMPLISHMENTS'