This paper describes the properties of the charging current and the discharging current for Diagnosis of Radiation Degradation of particually 60CO-γ-irradiated EPR cables in Nuclear Power stations. In this study, electrical properties are measured th...
This paper describes the properties of the charging current and the discharging current for Diagnosis of Radiation Degradation of particually 60CO-γ-irradiated EPR cables in Nuclear Power stations. In this study, electrical properties are measured the irradiation dose, (100Mrad, 150Mrad, 200Mrad), the ratio degradation (100%, 50%, 16.7%), length of non-irradiated samples in order to diagnosis EPR cables indestructively.
As a result, The value of charging current and the discharging current of cables is influenced by 60CO-γ-irradiation dose. The charging current and the discharging current of cables increases, depending on the ratio of degradation. The charging current and the discharging current is proportional to the cable length. These properties can be utilized as a index of irradiation degradation.