STP1175: Measurement of Electrical Conductivity of Ceramic Insulators in a Fission Reactor

    Shikama, T
    Associate Professor, Manager of Hot Laboratory, and Professor of the Oarai Branch, Institute for Materials Research, Tohoku University, Oarai, Ibarakiken,

    Narui, M
    Associate Professor, Manager of Hot Laboratory, and Professor of the Oarai Branch, Institute for Materials Research, Tohoku University, Oarai, Ibarakiken,

    Kayano, H
    Associate Professor, Manager of Hot Laboratory, and Professor of the Oarai Branch, Institute for Materials Research, Tohoku University, Oarai, Ibarakiken,

    Sagawa, T
    Researchers of the Oarai Research Establishment, Japan Atomic Energy Research Institute, Oarai, Ibarakiken,

    Endo, Y
    Researchers of the Oarai Research Establishment, Japan Atomic Energy Research Institute, Oarai, Ibarakiken,

    Pages: 11    Published: Jan 1994


    Abstract

    The electrical conductivity of two ceramic insulators, alumina, and silicon nitride was measured in a fission reactor under a dynamic vacuum condition. The instrumented irradiation rig was dynamically evacuated during fission reactor operation. The uppermost vacuum level attained was better than 10-2 Torr. In this experiment, we attempted to reveal effects of the gaseous environment on the measurement of electrical conductivity under ionizing irradiation. The results showed that the gaseous environment has a most hazardous effect in a certain gas pressure range.

    Keywords:

    ceramic insulator, electrical conductivity, in reactor measurement, dynamic vacuum condition


    Paper ID: STP24000S

    Committee/Subcommittee: E10.02

    DOI: 10.1520/STP24000S


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