Identification of LOFA precursors in ITER superconducting magnet cryogenic cooling circuit

V. Destino , R. Bonifetto , F. Di Maio , N. Pedroni , R. Zanino , Enrico Zio (1, 2, 3)

1 CRC - Centre de recherche sur les Risques et les Crises
2 POLIMI - Politecnico di Milano [Milan]
3 KHU - Kyung Hee University

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).

Mots clés: Nuclear fusion ITER Superconducting magnets Cryogenic cooling circuit Loss-of-flow accident (LOFA) Precursors Spectral clustering Fuzzy C-means

Domaines: Chimie; Chimie analytique; Sciences de l'ingénieur [physics]

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, 2021, 209, pp.107426. ⟨10.1016/j.ress.2020.107426⟩. ⟨hal-03478795⟩