Serviceability assessment and sensitivity analysis of cast iron water pipes under time-dependent deterioration using stochastic approaches

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Research Article| September 28 2016 Serviceability assessment and sensitivity analysis of cast iron water pipes under time-dependent deterioration using stochastic approaches Mojtaba Mahmoodian; Mojtaba Mahmoodian 1School of Engineering, RMIT, Melbourne, Australia E-mail: mojtaba.mahmoodian@rmit.edu.au Search for other works by this author on: This Site PubMed Google Scholar Chun Qing Li Chun Qing Li 1School of Engineering, RMIT, Melbourne, Australia Search for other works by this author on: This Site PubMed Google Scholar Journal of Water Supply: Research and Technology-Aqua (2016) 65 (7): 530–540. https://doi.org/10.2166/aqua.2016.101 Article history Received: August 12 2015 Accepted: August 09 2016 Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Cite Icon Cite Permissions Search Site Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentAll JournalsThis Journal Search Advanced Search Citation Mojtaba Mahmoodian, Chun Qing Li; Serviceability assessment and sensitivity analysis of cast iron water pipes under time-dependent deterioration using stochastic approaches. Journal of Water Supply: Research and Technology-Aqua 3 November 2016; 65 (7): 530–540. doi: https://doi.org/10.2166/aqua.2016.101 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex Determination of the depth of the corrosion pit is essential to predict the serviceability of corrosion affected pipes and to instigate maintenance and repairs for the pipeline system. In this paper, a reliability-based methodology for serviceability assessment of corrosion affected pipes is presented. The depth of corrosion pit is considered as the critical parameter that causes serviceability failure when it is greater than the wall thickness of the pipe. A stochastic model for corrosion depth of cast iron pipes is developed and a time-dependent method is employed to quantify the probability of serviceability failure so that the time for the pipeline to be unserviceable and hence requiring repairs can be determined. A sensitivity analysis is also undertaken to identify the factors that affect the failure due to corrosion. The methodology presented in this study can be used as a tool for infrastructure managers in different industries such as water distribution systems, oil and gas pipelines, sewer networks, etc. The methodology can help pipeline engineers and asset managers in making decisions with regard to the serviceability of corrosion affected pipelines both for assessment of existing systems and for designing new pipelines. cast iron pipes, corrosion pit, first passage probability, life time prediction, reliability analysis, serviceability failure © IWA Publishing 2016 You do not currently have access to this content.