Full core fuel burnup assessment of the ITU TRIGA Mark II research reactor using gamma spectroscopy

IF 2.6 3区工程技术 Q1 NUCLEAR SCIENCE & TECHNOLOGY

Nuclear Engineering and Technology Pub Date : 2025-09-27 DOI:10.1016/j.net.2025.103941

Z. Boduroglu , A. Kaya , O. Erbay , I.A. Reyhancan , M.S. Kiziltas , T. Akyurek

引用次数: 0

Abstract

This study investigates the burnup distribution of fuel elements in the ITU TRIGA Mark II research reactor core through gamma spectroscopy using ¹³⁷Cs as a burnup indicator. Non-Destructive Assay (NDA) techniques were employed to analyze fuel depletion, utilizing a specialized fuel investigation system installed above the reactor pool. The results indicate that the highest burnup values, exceeding 5 %, were concentrated in the inner core rings (B and C) due to intense neutron flux exposure, while the outer rings (D, E, F) exhibited lower burnup levels. To address this asymmetric distribution, a proposed fuel reshuffling strategy was analyzed, aiming to optimize neutron flux balance and enhance fuel utilization. Also, the strong correlation between ¹³⁷Cs activity and burnup values confirms its reliability as a burnup indicator.

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国际电联TRIGA Mark II型研究堆的全堆芯燃料燃耗评估

本研究使用137Cs作为燃耗指标，通过伽马光谱研究了ITU TRIGA Mark II研究堆堆芯中燃料元件的燃耗分布。采用非破坏性分析（NDA）技术，利用安装在反应堆池上方的专门燃料调查系统来分析燃料消耗。结果表明，由于中子通量的强烈照射，燃耗值最高的区域集中在内核环（B和C），燃耗值超过5%，而外围环（D、E、F）的燃耗值较低。针对这种不对称分布，提出了一种优化中子通量平衡、提高燃料利用率的燃料重组策略。此外，137Cs活性与燃耗值之间的强相关性证实了其作为燃耗指标的可靠性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Nuclear Engineering and Technology 工程技术-核科学技术

CiteScore

4.80

自引率

7.40%

发文量

431

审稿时长

3.5 months

期刊介绍： Nuclear Engineering and Technology (NET), an international journal of the Korean Nuclear Society (KNS), publishes peer-reviewed papers on original research, ideas and developments in all areas of the field of nuclear science and technology. NET bimonthly publishes original articles, reviews, and technical notes. The journal is listed in the Science Citation Index Expanded (SCIE) of Thomson Reuters. NET covers all fields for peaceful utilization of nuclear energy and radiation as follows: 1) Reactor Physics 2) Thermal Hydraulics 3) Nuclear Safety 4) Nuclear I&C 5) Nuclear Physics, Fusion, and Laser Technology 6) Nuclear Fuel Cycle and Radioactive Waste Management 7) Nuclear Fuel and Reactor Materials 8) Radiation Application 9) Radiation Protection 10) Nuclear Structural Analysis and Plant Management & Maintenance 11) Nuclear Policy, Economics, and Human Resource Development