January 20, 2023
Conference Paper

Investigation of Inverse Temperature Effects During Thermal-Radiation Aging of Semicrystalline Cable Insulation

Abstract

Inverse temperature effects were observed for semi-crystalline polymers subjected to combined thermal and irradiation aging. The mechanical durability of materials aged at low temperatures degrades with dose faster than at high temperatures. In this paper, two crosslinked polyethylene (XLPE) and two ethylene propylene rubber (EPR) type nuclear cable insulations were exposed to thermal-radiation aging at 100Gy/h up to 30Mrad and three temperatures (26°C, 50°C, 90°C). Their mass change and color change after aging were analyzed.

Published: January 20, 2023

Citation

Ni Y., A. Sriraman, D. Li, I.R. Ellis, and L.S. Fifield. 2022. Investigation of Inverse Temperature Effects During Thermal-Radiation Aging of Semicrystalline Cable Insulation. In IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP 2022), October 30-November 2, 2022, Denver, CO, 368-371. Piscataway, New Jersey:IEEE. PNNL-SA-175719. doi:10.1109/CEIDP55452.2022.9985318

Research topics

Reactor Licensing
Materials Sciences