Abstract:
The research reactor CENTER HFETR is with frequent start-up, shut-down and power follow-up, and the designing of the CRDM should focus on the buffering effect to ensure its reliability during its life time. Buffering tests are conducted on six models, and the buffer structure is selected based on the comparison of the control rod dropping impact and dropping time in the condition of static and dynamic water. The selected structure is with proper dropping time and small impact, which is applicable for this research reactor.
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