Predicting remaining life of transmission tower steelwork components

M. Segovia, V. M. Catterson, A. Stuart, L. Johnston, H. Bain, R. McPhaden, R. Wylie, A. Hernandez

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

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Abstract

Failures in transmission tower’s components usually result in extended disruption of power supply. Repair is very costly as it involves replacement of the transmission lines’ sections affected. Additionally, it might also entail litigation cost associated with power disruption. Maintenance decisions have to be taken in time to prevent a failure. At present, maintenance decisions are mainly based on expert’s judgement, who perform inspections every 10 to 12 years.
On specific sites, tower’s components degrade much faster due to aggressive atmospheric conditions, with corrosion being the primary cause of deterioration. In this context, data indicating health state from an UK utility were used to create a Cox model that relates the time before a failure occurs to climatic and atmospheric conditions highly correlated with corrosion. The paper demonstrates the use of the model for predicting remaining tower life, and highlights how this can feed into maintenance planning.
Original languageEnglish
Title of host publicationRisk, Reliability and Safety
Subtitle of host publicationInnovating Theory and Practice: Proceedings of ESREL 2016 (Glasgow, Scotland, 25-29 September 2016)
EditorsLesley Walls, Matthew Revie, Tim Bedford
Place of PublicationLondon, UK
Number of pages8
Publication statusPublished - 13 Sep 2016

Keywords

  • transmission towers
  • power supply
  • transmission lines
  • maintenance
  • atmospheric conditions
  • deterioration
  • steelwork
  • lifetime expectancy

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  • Tower Condition Assessment

    Segovia Garcia, M. D. C., Catterson, V., Stuart, A., Johnston, L., Bain, H., McPhaden, R., Wylie, R. & Hernandez, A.

    1/04/141/06/15

    Project: Research

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