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

Yoshimichi Ohki, Naoshi Hirai, Toshio Yamamoto

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

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.

Original languageEnglish
Title of host publicationProceedings of 2008 International Conference on Condition Monitoring and Diagnosis, CMD 2008
Pages1207-1211
Number of pages5
DOIs
Publication statusPublished - 2007
Event2008 International Conference on Condition Monitoring and Diagnosis, CMD 2008 - Beijing
Duration: 2008 Apr 212008 Apr 24

Other

Other2008 International Conference on Condition Monitoring and Diagnosis, CMD 2008
CityBeijing
Period08/4/2108/4/24

Fingerprint

Electric wire
Electric cables
Condition monitoring
Nuclear power plants
Cables
Loss of coolant accidents
Degradation
Organic polymers
Insulation
Radiation
Polymers
Temperature

Keywords

  • Accidents
  • Aging
  • Cable insulation
  • Diagnosis
  • Maintenance
  • Monitoring
  • Nuclear power generation
  • Polymers
  • Radiation effects
  • Wire

ASJC Scopus subject areas

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

Cite this

Ohki, Y., Hirai, N., & Yamamoto, T. (2007). Need for condition monitoring and diagnosis of electric wires and cables used in nuclear power plants. In Proceedings of 2008 International Conference on Condition Monitoring and Diagnosis, CMD 2008 (pp. 1207-1211). [4580505] https://doi.org/10.1109/CMD.2008.4580505

Need for condition monitoring and diagnosis of electric wires and cables used in nuclear power plants. / Ohki, Yoshimichi; Hirai, Naoshi; Yamamoto, Toshio.

Proceedings of 2008 International Conference on Condition Monitoring and Diagnosis, CMD 2008. 2007. p. 1207-1211 4580505.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Ohki, Y, Hirai, N & Yamamoto, T 2007, Need for condition monitoring and diagnosis of electric wires and cables used in nuclear power plants. in Proceedings of 2008 International Conference on Condition Monitoring and Diagnosis, CMD 2008., 4580505, pp. 1207-1211, 2008 International Conference on Condition Monitoring and Diagnosis, CMD 2008, Beijing, 08/4/21. https://doi.org/10.1109/CMD.2008.4580505
Ohki Y, Hirai N, Yamamoto T. Need for condition monitoring and diagnosis of electric wires and cables used in nuclear power plants. In Proceedings of 2008 International Conference on Condition Monitoring and Diagnosis, CMD 2008. 2007. p. 1207-1211. 4580505 https://doi.org/10.1109/CMD.2008.4580505
Ohki, Yoshimichi ; Hirai, Naoshi ; Yamamoto, Toshio. / Need for condition monitoring and diagnosis of electric wires and cables used in nuclear power plants. Proceedings of 2008 International Conference on Condition Monitoring and Diagnosis, CMD 2008. 2007. pp. 1207-1211
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