Premature electrical cable failures in nuclear power plants (NPPs) have been observed which have raised questions about long-term performance of electrical cables and renewed interest in investigating the service life of electrical cables. For new NPPs, assessing the integrity of electrical cables generates new concerns, which arise from the global nature of the cable market and from changes taking place in new construction of NPPs. From these studies, it has been concluded that for both new and existing NPPs, research is lacking for determining aging mechanisms of low voltage cables exposed to high RH and wet (submerged) conditions and for high voltage cables and new electrical cables subjected to temperature/radiation/wet conditions and validating methodologies for predicting the service life of electrical cable. In this paper, we will describe our research program on cable condition monitoring and discuss results from a set of condition monitoring methods as a function of degradation on polymer cable insulation. 

Assessment of electrical cable condition monitoring methods

248th National Meeting (2014)

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