Voltage deterioration of XLPE wires in water under gamma ray irradiation

Author

Mori, K. ; Inoue, Y. ; Yoshimitsu, T. ; Ishikawa, Y. ; Yoshida, H. ; Sueki, T. ; Aida, F.

Author_Institution

Toshiba Corp., Yokohama, Japan

Volume

4

Issue

3

fYear

1989

fDate

9/1/1989 12:00:00 AM

Firstpage

466

Lastpage

472

Abstract

Three types of cross-linked polyethyline (XLPE) wire were developed for insulation of internal pump motors (wet type) used in an advanced boiling water reactor. By applying gamma ray irradiation of 10 ⁴ to 10⁶ Gy and electric stress in hot water simultaneously or sequentially, the effect of gamma ray irradiation is examined. The effect of combined stresses in a large scale functional test is also described. It is proved that the gamma ray irradiation less than 10⁶ Gy does not deteriorate the properties of the insulation of the wires. In the irradiational environment of 5×10 ⁴ Gy where the internal pump motor is served, it is concluded that the wires have sufficient reliability

Keywords

electric breakdown of solids; electric motors; gamma-ray effects; insulation testing; machine insulation; machine windings; organic insulating materials; polymers; XLPE wires; boiling water reactor; cross-linked polyethyline; electric stress; gamma ray irradiation; hot water; internal pump motors; voltage deteriorations; Cable insulation; Conductors; Frequency; Sequential analysis; Stator windings; Stress; Testing; Trees - insulation; Voltage; Wires;

fLanguage

English

Journal_Title

Energy Conversion, IEEE Transactions on

Publisher

ieee

ISSN

0885-8969

Type

jour

DOI

10.1109/60.43250

Filename

43250