| Abstract: | Various techniques have been developed for the quality inspection of coated fuel particles. The present report summarizes these techniques, which include random sampling of particles by two-stage sampling, measurement of kernel diameter and coating thickness by metallography and X-ray microradiography, determination of density by Hg displacement, m-xylene pycnometry and sink-float technique, determination of the crystallite orientation of pyrolytic carbon, assessment of uranium contamination by α-counting, fluorescence analysis and fission track counting, determination of the C/Si ratio of SiC layer by chlorination, and measurement of the crushing strength of particles. Quality evaluation based on statistical treatment of the data is also described briefly. |
