Innovative Data-driven “along-the-pipe” Condition Assessment for Critical Water Mains

Publisher:
Australian Water Association
Publication Type:
Conference Proceeding
Citation:
OZWATER’17 Australia’s International Water Conference & Exhibition, 2017
Issue Date:
2017-05-17
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Recent research findings on remaining life prediction for older Cast Iron critical water mains suggest increasing reliability by calculating stress concentration factors from the corrosion patch geometries expected to be present in the asset, not just extreme pitting as is generally carried out within the industry. This study proposes an innovative data-driven “along-the-pipe” framework able to utilise local inspection results further by capturing data correlations present in the remaining wall thickness measurement. This knowledge can in turn be utilised to produce estimates for “along-the-pipe” patch geometry predictions, hence remaining life. Results from inspections in a real pipeline in the Sydney Water network are compared to conventional Extreme Value Analysis (EVA) to validate the improvements of the proposed strategy.
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