Title :
Effect of antioxidant concentration and radiation dose on oxidation induction time
Author :
Mason, L.R. ; Doyle, T.E. ; Reynolds, A.B.
Author_Institution :
Reactor Facility, Virginia Univ., Charlottesville, VA, USA
Abstract :
Oxidation induction time (OIT) provides a useful measurement of aging of electrical cable insulation. The technique is being refined for application to 1E electric cable in nuclear power plants. Exponential correlations have been found for OIT as functions of both radiation dose and antioxidant concentration for ethylene-propylene rubber (EPR) and cross-linked polyetheylene (XLPE) cable materials. At constant dose rate, the antioxidant concentration was shown to decrease linearly with time, which is consistent with oxidation reaction kinetics
Keywords :
ageing; cable insulation; organic insulating materials; oxidation; polymers; power cables; radiation effects; reaction kinetics; rubber; thermal analysis; 1E electric cable; EPR cable; OIT; XLPE cable; antioxidant concentration; cross-linked polyetheylene; differential scanning calorimetry; dose rate; elecrical cable insulation ageing; ethylene-propylene rubber; exponential correlation; nuclear power plants; oxidation induction time; oxidation reaction kinetics; radiation dose; Aging; Cable insulation; Cables; Chemicals; Kinetic theory; Oxidation; Paramagnetic resonance; Polymers; Temperature; Thermal degradation;
Conference_Titel :
Electrical Insulation, Conference Record of the 1992 IEEE International Symposium on
Conference_Location :
Baltimore, MD
Print_ISBN :
0-7803-0649-X
DOI :
10.1109/ELINSL.1992.247027
