Lessons learnt on pipe failure mechanisms from observation of exhumed cast iron pipes

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Abstract

Underground water distribution pipe failures occur commonly across Australia. External loads, internal loads and corrosion are the main contributers to cast iron pipe failures. Pipe replacement after failure is conducted as fast as possible and failure mechanisms are only briefly documented. The extent of corrosion in exhumed cast iron pipes were collated. Pipes failures which did not lead to a major burst (leaks and no pipe failure) were examined. Some examples of non-failed cast iron pipe sections were analysed using stress analysis and approximate pipe material input data. In conclusion, irrespective of the depth of corrosion, the patch/pit sizes under 40 mm in diameter examined were unlikely to cause failure in all cast iron pipes tested.
Original languageEnglish
Title of host publicationOzWater 2016, Australia's International Water Conference & Exhibition, Melbourne, Australia
PublisherAustralian Water Association
Number of pages7
Publication statusPublished - 2016
EventAustralian Water Association Convention - Ozwater 2016 - Melbourne Convention and Exhibition Centre, Melbourne, Australia
Duration: 10 May 201612 May 2016

Conference

ConferenceAustralian Water Association Convention - Ozwater 2016
Abbreviated titleOzwater 2016
CountryAustralia
CityMelbourne
Period10/05/1612/05/16

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