In-situ multi-scale damage detection of AGR full core graphite components

ZENG Tianchen; SUN Yuewen; ZHAO Zhongwei; CONG Peng

doi:10.16511/j.cnki.qhdxxb.2021.25.030

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Journal of Tsinghua University(Science and Technology) ›› 2022, Vol. 62 ›› Issue (10) : 1675-1680. DOI: 10.16511/j.cnki.qhdxxb.2021.25.030

NUCLEAR AND NEW ENERGY TECHNOLOGY

In-situ multi-scale damage detection of AGR full core graphite components

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Abstract

The advanced gas-cooled reactor (AGR) was developed in the UK and is now approaching the end of its design life.Extensions of the design life mainly depend on the structural integrity of the graphite components used for core support and moderation.This study used the simultaneous algebraic reconstruction technique (SART) to simulate the linear computed tomography (CT) imaging detection scheme.The model was used to explore the influence of the background radiation in the reactor on the linear CT imaging detection and to simulated the detection and reconstruction of internal cracks and quality loss defects in the graphite components based on the known internal environment and geometric parameters of the graphite components.The predictions show that the scheme can provide important reference data for extending the life of the AGR.

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advanced gas-cooled reactor (AGR) / graphite components / linear computed tomography

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ZENG Tianchen, SUN Yuewen, ZHAO Zhongwei, CONG Peng. In-situ multi-scale damage detection of AGR full core graphite components[J]. Journal of Tsinghua University(Science and Technology). 2022, 62(10): 1675-1680 https://doi.org/10.16511/j.cnki.qhdxxb.2021.25.030

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