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Identification of LOFA precursors in ITER superconducting magnet cryogenic cooling circuit

Abstract : In the International Thermonuclear Experimental Reactor, plasma is magnetically confined with Superconductive Magnets (SMs) that must be maintained at cryogenic temperature by a Superconducting Magnet Cryogenic Cooling Circuit (SMCCC). To guarantee cooling, Loss-Of-Flow Accidents (LOFAs) in the SMCCC are to be avoided. In this work, an approach to identify LOFA precursors (i.e., those component failures leading to a LOFA) is presented. The approach is based on a Spectral Clustering (SC) method using the Fuzzy C-Means (FCM) algorithm and is applied to the SMCCC of a single module of the ITER Central Solenoid (CS).
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Submitted on : Tuesday, December 14, 2021 - 10:11:58 AM
Last modification on : Tuesday, January 4, 2022 - 12:52:42 PM

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V. Destino, R. Bonifetto, F. Di Maio, N. Pedroni, R. Zanino, et al.. Identification of LOFA precursors in ITER superconducting magnet cryogenic cooling circuit. Reliability Engineering and System Safety, Elsevier, 2021, 209, pp.107426. ⟨10.1016/j.ress.2020.107426⟩. ⟨hal-03478795⟩

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