NDLI: Failure analysis and design improvement of the Alcator C-Mod toroidal field coil sliding joint

Content Provider	IEEE Xplore Digital Library
Author	Titus, P.H. Becker, H. Gwinn, D. Rettman, K. Stahle, P.
Copyright Year	1999
Description	Author affiliation: Stone & Webster Eng. Corp., Boston, MA, USA (Titus, P.H.)
Abstract	In March of 1998 a short occurred in the TF system. Small amounts of copper and carbon tracking were found in the A-right TF. A crack in a finger in the central column was also found. Subsequent disassembly revealed arcing damage to the outer-upper horizontal leg finger joint region, at the lead connection leg where the voltage difference is large. Material was also removed from the neighboring torque shell. Significant degradation of the felt metal in the inner fingers at the central column was also found. This initiated re-analysis of the finger design, testing of the felt metal, and a decision to replace all the felt metal in the machine. Design improvements have been made but some uncertainty as to the cause of the failure remains.
Starting Page	427
Ending Page	432
File Size	740310
Page Count	6
File Format	PDF
ISBN	0780358295
DOI	10.1109/FUSION.1999.849871
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1999-10-25
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Failure analysis Leg Coils Fingers Copper Assembly Current density Nuclear and plasma sciences Voltage Torque
Content Type	Text
Resource Type	Article

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Failure analysis and design improvement of the Alcator C-Mod toroidal field coil sliding joint