Experimental evaluation of fuel rod pattern analysis in fuel assembly using Yonsei single-photon emission computed tomography (YSECT)

Hyung joo Choi, Bo Wi Cheon, Min Kyu Baek, Heejun Chung, Yong Hyun Chung, Sei Hwan You, Chul Hee Min, Hyun Joon Choi

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1 Citation (Scopus)


The purpose of this study was to verify the possibility of fuel rod pattern analysis in a fresh fuel assembly using the Yonsei single-photon emission computed tomography (YSECT) system. The YSECT system consisted of three main parts: four trapezoidal-shaped bismuth germanate scintillator-based 64-channel detectors, a semiconductor-based multi-channel data acquisition system, and a rotary stage. In order to assess the performance of the prototype YSECT, tomographic images were obtained for three representative fuel rod patterns in the 6 × 6 array using two representative image-reconstruction algorithms. The fuel-rod patterns were then assessed using an in-house fuel rod pattern analysis algorithm. In the experimental results, the single-directional projection images for those three fuel-rod patterns well discriminated each fuel-rod location, showing a Gaussian-peak-shaped projection for a single 10 mm-diameter fuel rod with 12.1 mm full-width at half maximum. Finally, we successfully verified the possibility of the fuel rod pattern analysis for all three patterns of fresh fuel rods with the tomographic images obtained by the rotational YSECT system.

Original languageEnglish
Pages (from-to)1982-1990
Number of pages9
JournalNuclear Engineering and Technology
Issue number6
Publication statusPublished - 2022 Jun

Bibliographical note

Funding Information:
This research was supported by the Nuclear Safety Research Program through the Korea Foundation Of Nuclear Safety (KoFONS) using financial resources granted by the Nuclear Safety and Security Commission (NSSC) of Republuc of Korea (No. 2101073 ), the Korea Institute of Energy Technology Evaluation and Planning (KETEP) , and the Ministry of Trade, Industry & Energy (MOTIE) of the Republic of Korea (No. G032579811 ).

Publisher Copyright:
© 2022 Korean Nuclear Society

All Science Journal Classification (ASJC) codes

  • Nuclear Energy and Engineering


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