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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,

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

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

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

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

Pages: 11    Published: Jan 1994

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Source: STP1175-EB

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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