b'which is where the irradiationin the middle of the cycle beforeFigure 3. SiC-SiC Cladding Pins loaded damage for this material is expectedcoming back online. The process ofinto ATF-2C tier 3to saturate. The longer JAEA testconverting the measured displace-pins with in-situ instrumentsments into meaningful plenum reached burnups of between 3-4pressure measurements is ongoing. GWd/MTU of average burnup withOverall, the irradiation experiment peaking factors of about 1.2 pushingis achieving its goals of irradiating the peak burnup in the fuel pin toa variety of both evolutionary and between 3.5-5 GWd/MTU. The TCsrevolutionary ATF fuel concepts performed well during the firstin a fully prototypic environment. irradiation cycle recording expectedThis world leading irradiation test fuel temperatures between 800Cbrings together ATF developers and 900C. The LVDTs measuringboth nationally and internation-plenum pressure appeared to beally and has achieved a new level drifting up slightly although littleof sophistication through the fission gas is released at the begin- incorporation of in-situ instru-ning of the irradiation. The LVDTsments providing valuable real did come offline for several daystime data to ATF developers.2023|AFC ACCOMPLISHMENTS 73'