Implementation of Non-Destructive Electrical Condition Monitoring Techniques on Low-Voltage Nuclear Cables: I. Irradiation Aging of EPR/CSPE Cables

Ehtasham Mustafa, Ramy S. A. Afia, Oumaima Nouini and Zoltán Ádám Tamus
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Ehtasham Mustafa: Department of Electrical Engineering, Gomal University, Dera Ismail Khan 29050, Pakistan
Ramy S. A. Afia: Department of Electric Power Engineering, Budapest University of Technology and Economics, H-1111 Budapest, Hungary
Oumaima Nouini: Department of Electric Power Engineering, Budapest University of Technology and Economics, H-1111 Budapest, Hungary
Zoltán Ádám Tamus: Department of Electric Power Engineering, Budapest University of Technology and Economics, H-1111 Budapest, Hungary

Energies, 2021, vol. 14, issue 16, 1-16

Abstract: In a nuclear power plant environment, low-voltage cables experience different stresses during their service life which challenge their integrity. A non-destructive and reliable condition monitoring technique is desired to determine the state of these low-voltage cables during service and for the life extension of nuclear power plants. Hence, in this research work, an EPR/CSPE-based low-voltage cable was exposed to γ-rays for five different absorbed doses. The overall behavior of the cable under stress was characterized by frequency and time domain electrical measurements (capacitance, tan δ, and Extended Voltage Response) and a mechanical measurement (elongation at break). Significant variations in the electrical parameters were observed, as was a decline in the elongation at break values. A strong correlation between the measurement methods was observed, showing the ability of the electrical methods to be adopted as a non-destructive condition monitoring technique.

Keywords: nuclear power plant; low-voltage cables; radiation aging; dielectric spectroscopy; extended voltage response; elongation at break (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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