Analysis and Assessment of Reactor Beryllium Component Stress

Based on the mechanical and irradiation properties of beryllium, the irradiated beryllium component stress analysis was proposed, in which the mechanical stress, thermal stress and irradiation swelling induced stress and the load combination in the operation conditions are considered,, and also the maximum tensile stress theory was suggested to use in the assessment. In this paper, a stress analysis and assessment was made for the beryllium tube, which is the key component of HFETR beryllium assembly, by ABAOUS. The result showed that the maximum principle stress was much less than the tensile stress, and that the beryllium assembly can be still used for a long time from the perspective of stress rupture.