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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2022, Vol. 62 
