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|Title:||Tiểu ban A: Evaluation of Burnup Distribution of a Research Reactor based on Subcritical Measurements|
|Authors:||Quang Binh Do, Hoai-Nam Tran, and Quang Huy Ngo|
|Keywords:||The Dalat Nuclear Research Reactor|
|Publisher:||Viện Năng lượng nguyên tử Việt Nam|
|Abstract:||This paper presents the determination of the fuel burnup distribution of the Dalat nuclear research reactor (DNRR) using a method of measurements at subcritical conditions. The method is based on the assumption of linear dependence of the reactivity on the burnup of fuel elements and the measurements at subcritical conditions. The measurements were conducted for seven selected fuel bundles in two different measuring sequences. The measured burnup values have also been compared with the calculations for verifying the method and the measurement procedure. The results obtained with the three detectors have a good agreement with each other with a discrepancy less than 1.0%. The errors of the measured burnup values are within 6%. Comparison between the calculated and measured burnup values shows that the discrepancy of the C/E ratio is within 9% compared to unity. The results indicate that the method of measurements at subcritical conditions could be well applied to determine the relative burnup distribution of the DNRR.|
|Appears in Collections:||Hội nghị KHCNHN toàn quốc lần thứ 12|
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