Measurement and prediction of crud thickness on Al clad of advanced fuel for HANARO reactor. Measurement of crud thickness on fuel of research reactor fuel test irradiated in 2000 has been performed. During irradiation of Al 1100 clad, the cooling water was maintained at temperature <100drajatc,> 5 MOhm.m, inside channel flow 8 m/s. The cladding surface temperature has been predicted between 100-120drajatC. The irradiation has been conducted for 60 days, average and maximum bumup 10 and 12.9% respectively. Prediction of crud thickness was carried out by using correlation estabilished by JAERI in 1965 based on ex-core experiment. The purpose of the study is evaluating the correlation between prediction and measurement of crud thickness. The thickness measurement has been conducted by using ImageProAnalysis software for metallurgical image of irradiated fuel pin cross-sections. The average thickness of each cross-sections are 23.95, 12.96 and 10.91 um from the highest to lowest surface temperature, with <12%>
