Need for condition monitoring and diagnosis of electric wires and cables used in nuclear power plants

Yoshimichi Ohki, Naoshi Hirai, Toshio Yamamoto

研究成果: Conference contribution

4 被引用数 (Scopus)

抄録

Electric cables in nuclear power plants have to function even after serious events such as a loss-of-coolant accident (LOCA). In most cables, organic polymers that are very sensitive to radiation are used. Nevertheless, much attention was not paid until recently. Under these circumstances, the Japanese government started an extensive research project to examine the degradation behavior of safety-related cables at three different temperatures with three different dose rates. An interim report published recently revealed that some cables would be unable to function after the LOCA test. In this paper, a brief outline of the interim report is described. Categorization of all the causes of malfunctions occurred in electric apparatus in all the Japanese nuclear power plants for recent about 40 years, revealed that there has been only one case of a slight malfunction of cable caused by degradation of polymer insulation, indicating that we don't have to worry so much. It is still very important to establish a proper condition monitoring method in order to secure much higher reliability.

本文言語English
ホスト出版物のタイトルProceedings of 2008 International Conference on Condition Monitoring and Diagnosis, CMD 2008
出版社IEEE Computer Society
ページ1207-1211
ページ数5
ISBN(印刷版)9781424416219
DOI
出版ステータスPublished - 2008 1 1
イベント2008 International Conference on Condition Monitoring and Diagnosis, CMD 2008 - Beijing, China
継続期間: 2008 4 212008 4 24

出版物シリーズ

名前Proceedings of 2008 International Conference on Condition Monitoring and Diagnosis, CMD 2008

Conference

Conference2008 International Conference on Condition Monitoring and Diagnosis, CMD 2008
CountryChina
CityBeijing
Period08/4/2108/4/24

ASJC Scopus subject areas

  • Industrial and Manufacturing Engineering
  • Safety, Risk, Reliability and Quality

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