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Ageing Assessment of XLPE LV Cables for Nuclear Applications through Physico-Chemical and Electrical Measurements

Type
Articles dans des revues avec comité de lecture
Author
SURACI, Simone Vincenzo
86289 Laboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]
FABIANI, Davide
453448 University of Bologna
XU, Anne
86289 Laboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]
ROLAND, Sébastien
86289 Laboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]
COLIN, Xavier
86289 Laboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]

URI
http://hdl.handle.net/10985/18387
DOI
10.1109/ACCESS.2020.2970833
Date
2020
Journal
IEEE Access

Abstract

This paper investigates the changes in electrical and physico-chemical properties of low-voltage power cables for nuclear application when subjected to the combined effects of gamma radiation and temperature. Electrical response is evaluated by means of the dielectric spectroscopy, while the physico-chemical changes are analyzed at different structural scales through five complementary techniques (OIT measurements, FTIR spectroscopy, swelling measurements, DSC analysis and micro-indentation). The dielectric spectroscopy and the first two chemical techniques are shown to be appropriate for evaluating the development of radio-thermal ageing in low-voltage cables. Hence, the results reported in this article suggest the effectiveness of dielectric spectroscopy as a non-destructive technique for on-site cable diagnosis.

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