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

Nuclear Engineering and Technology (Jun 2022)

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

Affiliations

Hyung-joo Choi: Department of Radiation Convergence Engineering, Yonsei University, South Korea
Bo-Wi Cheon: Department of Radiation Convergence Engineering, Yonsei University, South Korea
Min Kyu Baek: Department of Radiation Convergence Engineering, Yonsei University, South Korea
Heejun Chung: The Korea Institute of Nuclear Nonproliferation and Control, South Korea
Yong Hyun Chung: Department of Radiation Convergence Engineering, Yonsei University, South Korea
Sei Hwan You: Department of Radiation Oncology, Yonsei University Wonju College of Medicine, South Korea
Chul Hee Min: Department of Radiation Convergence Engineering, Yonsei University, South Korea; Corresponding author.
Hyun Joon Choi: Department of Radiation Oncology, Yonsei University Wonju College of Medicine, South Korea; Corresponding author.

Journal volume & issue: Vol. 54, no. 6
pp. 1982 – 1990

Abstract

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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.

Published in Nuclear Engineering and Technology

ISSN: 1738-5733 (Print)
Publisher: Elsevier
Country of publisher: Korea, Republic of
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Nuclear engineering. Atomic power
Website: http://www.journals.elsevier.com/nuclear-engineering-and-technology

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