- Title
- Probabilistic modelling of pit area in corroded cast iron pipes
- Creator
- Soltani Asadi, Z.; Melchers, R. E.
- Relation
- Australasian Corrosion Association Annual Conference: Corrosion and Prevention 2015. Proceedings of the Australasian Corrosion Association Annual Conference: Corrosion and Prevention 2015 (Adelaide, S.A. 15-18 November, 2015)
- Publisher
- Australasian Corrosion Association (ACA)
- Resource Type
- conference paper
- Date
- 2015
- Description
- The deterioration of cement lined cast iron water mains such as used extensively in cities in Australia and many other cities world-wide has been observed to be mainly caused by external pitting corrosion. Since the pipes are buried and thus cannot c be inspected visually, there is considerable uncertainty about their condition. Indirect inspection techniques also have a high degree of uncertainty. For these reasons there is interest in long-term asset management to develop realistic models for depth and area of pitting corrosion to aid estimation of the probability of failure of older pipes. Generally it is considered that the deepest pits are of most interest in relation to failure. However, pit area is another important factor, which is crucial for estimating the rate of leakage and for assessing the mechanical behaviour and failure probability of pipes. Previous studies usually have assumed that pit area is directly related to pit depth. The present study examines pit area data collected from several pipes that have experienced many years of service (up to 129 years) and describes the relationship between pit areas and pit depths.
- Subject
- pitting corrosion; cast iron pipes; probabilistic modelling; pit areas
- Identifier
- http://hdl.handle.net/1959.13/1315256
- Identifier
- uon:22924
- Identifier
- ISBN:9781510822573
- Language
- eng
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