Correlation of oxidative induction time with thermal and radiation aging of EPR and XLPE cable insulation

Author

Bell, R.M. ; Doyle, T.E. ; Reynolds, A.B.

Author_Institution

Reactor Facility, Virginia Univ., Charlottesville, VA, USA

fYear

1990

fDate

3-6 Jun 1990

Firstpage

348

Lastpage

351

Abstract

The objective of the project described is to determine the extent to which radiation and thermal aging of cable can be assessed by the measurement of oxidative induction time (OIT). Since OIT can be obtained from very small samples of insulation, OIT measurement can be considered as a nondestructive testing method. Ethylene-propylene rubber (EPR) and cross-linked polyethylene (XLPE) cable insulation materials frequently used in nuclear power plants were used in the tests. The OIT is shown to decrease at a faster rate with aging than elongation to rupture. Early results of this investigation indicate that OIT is an effective method for measuring aging

Keywords

ageing; cable insulation; cable testing; insulation testing; nondestructive testing; organic insulating materials; oxidation; polymers; power cables; radiation effects; EPR; NDT; OIT measurement; XLPE; cable insulation; cross-linked polyethylene; ethylene propylene rubber; nondestructive testing method; oxidative induction time; radiation aging; thermal aging; Aging; Cable insulation; Insulation testing; Materials testing; Nondestructive testing; Paramagnetic resonance; Polyethylene; Power generation; Rubber; Time measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation, 1990., Conference Record of the 1990 IEEE International Symposium on

Conference_Location

Toronto, Ont.

ISSN

1089-084X

Type

conf

DOI

10.1109/ELINSL.1990.109770

Filename

109770