Determination of fuel burnup distribution of a research reactor based on measurements at subcritical conditions

Quang Binh Do; Hoai-Nam Tran; Quang Huy Ngo; Giang T.T. Phan

doi:10.1007/s41365-018-0511-0

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Determination of fuel burnup distribution of a research reactor based on measurements at subcritical conditions

NUCLEAR ENERGY SCIENCE AND ENGINEERING | Updated：2021-02-07

- Determination of fuel burnup distribution of a research reactor based on measurements at subcritical conditions
- Nuclear Science and Techniques Vol. 29, Issue 12, Article number: 174(2018)
- Affiliations：
  
  1.Ho Chi Minh City University of Technology and Education, 1 Vo Van Ngan, Thu Duc, HCMC, Vietnam
  2.Institute of Fundamental and Applied Sciences, Duy Tan University, 3 Quang Trung, Da Nang, Vietnam
- Author bio：
  
  Corresponding author, tranhoainam4@dtu.edu.vn
- Funds：
- DOI：10.1007/s41365-018-0511-0
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Quang Binh Do, Hoai-Nam Tran, Quang Huy Ngo, et al. Determination of fuel burnup distribution of a research reactor based on measurements at subcritical conditions. [J]. Nuclear Science and Techniques 29(12):174(2018)
DOI：

Quang Binh Do, Hoai-Nam Tran, Quang Huy Ngo, et al. Determination of fuel burnup distribution of a research reactor based on measurements at subcritical conditions. [J]. Nuclear Science and Techniques 29(12):174(2018) DOI： 10.1007/s41365-018-0511-0.

摘要

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 bundles 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.

关键词

Keywords

Burnup distributionSubcritical measurementResearch reactorDNRR

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Institute of Fundamental and Applied Sciences, Duy Tan University

Faculty of Natural Science, Duy Tan University

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