- Title
- Estimating the long-term reliability of steel and cast iron pipelines subject to pitting corrosion
- Creator
- Melchers, Robert E.; Ahammed, Mukshed
- Relation
- ARC.DP160101908 http://purl.org/au-research/grants/arc/DP160101908
- Relation
- Sustainability Vol. 13, Issue 23, no. 13235
- Publisher Link
- http://dx.doi.org/10.3390/su132313235
- Publisher
- MDPI AG
- Resource Type
- journal article
- Date
- 2021
- Description
- Water-injection, oil production and water-supply pipelines are prone to pitting corrosion that may have a serious effect on their longer-term serviceability and sustainability. Typically, ob-served pit-depth data are handled for a reliability analysis using an extreme value distribution such as Gumbel. Available data do not always fit such monomodal probability distributions well, partic-ularly in the most extreme pit-depth region, irrespective of the type of pipeline. Examples of this are presented, the reasons for this phenomenon are discussed and a rationale is presented for the oth-erwise entirely empirical use of the 'domain of attraction' in extreme value applications. This per-mits a more rational estimation of the probability of pipe-wall perforation, which is necessary for asset management and for system-sustainability decisions.
- Subject
- steel; cast iron; piplelines; pitting; reliability; extreme value analysis
- Identifier
- http://hdl.handle.net/1959.13/1437489
- Identifier
- uon:40365
- Identifier
- ISSN:2071-1050
- Rights
- © 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
- Language
- eng
- Full Text
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