Aging Modeling of Low-Voltage Cables Subjected to Radio-Chemical Aging

This article presents the development and application of a modelling approach based on quantities obtained from mechanical electrical tests to assess aging low voltage cable insulation for nuclear applications. In order obtain experimental data needed establishing models, accelerated is performed coaxial cables. The first part this paper focuses predictive properties; allows evaluation Dose Equivalent Damage (DED) as function stress (dose rate). However, use assessment some problems, being such destructive potentially affected by local defects. novelty work lays introduction new model, allowing definition end-of-life point in terms non-destructive tests. second correlation with at different stresses, which allow estimation expected life under test be derived diagnostic measurements properties like, e.g, tan δ. Finally, proposed model two typical real-condition environments presented discussed.