Abstract

Superconducting toroidal field coils for future commercial Tokamak reactors must operate safely and reliably for periods of up to 30 years or more with minimal interruption for maintenance. This paper represents an initial attempt to consider safety and reliability issues for superconducting fusion magnets. Goals and approaches for safety and reliability are characterized. Possible accident initiators are identified, and the effect of mechanical, thermal, and electrical factors are examined, by using some early Tokamak reactor concepts as illustrations. Principal factors in magnet instrumentation and control are identified, and the role of engineered-safety features are discussed.

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