dc.contributor.author | Spark, AJ | |
dc.contributor.author | O'Keefe, D | |
dc.contributor.author | Cole, I | |
dc.contributor.author | Osborn, AM | |
dc.contributor.author | Law, D | |
dc.contributor.author | Ward, LP | |
dc.date.accessioned | 2017-11-28T04:12:14Z | |
dc.date.available | 2017-11-28T04:12:14Z | |
dc.date.issued | 2015 | |
dc.identifier.uri | http://hdl.handle.net/10072/173807 | |
dc.description.abstract | Corrosion of cast iron water pipes, particularly localized pitting corrosion, can propagate
leaks and bursts of pipelines which can lead to expensive repairs or replacement. One of the primary
mechanisms which cause localized pitting corrosion within potable water networks is microbiologically
influenced corrosion (MIC) due to the action of biofilms on the pipe surface.
City West Water (CWW), one of the four water companies servicing Melbourne, conducts an ongoing
condition assessment program of its potable water pipelines. One of the non destructive testing
technologies CWW uses as part of this program on its critical water mains to assess extent of corrosion is
magnetic flux leakage (MFL). The information from this program feeds back into CWW’s asset
management risk model and subsequently the water mains renewal program.
In December 2014, a section of water main located at Bridge Rd in Richmond, Victoria was excavated as
part of the condition assessment program. Soil samples and samples of the corrosion product from this in
service pipeline were taken for further investigations to identify the microbial species present. From these
samples microbial DNA was extracted and amplified which was confirmed via spectrophotometry and
DNA gel electrophoresis. There is potential for these techniques to be expanded to a new non destructive
testing technique for infrastructure to determine the presence of MIC.
By comparing MFL results, soil analysis data and the early stage microbial data, the aim of this
investigation is to give a more complete understanding of the environment surrounding a pipe and how
this may contribute ultimately to pipe failure as a result of corrosion. A better understanding of the
environment and condition of pipelines through a range of non destructive testing and how this correlates
with the corrosion mechanisms occurring could lead to strategies for improved durability design and
maintenance. | |
dc.description.peerreviewed | Yes | |
dc.language | English | |
dc.publisher | Australasian Corrosion Association (ACA) | |
dc.publisher.place | Australia | |
dc.publisher.uri | https://membership.corrosion.com.au/ | |
dc.relation.ispartofconferencename | ACA 2015 Australasian Corrosion Association Annual Conference | |
dc.relation.ispartofconferencetitle | Australasian Corrosion Association Annual Conference: Corrosion and Prevention 2015, ACA 2015 | |
dc.relation.ispartofdatefrom | 2015-11-15 | |
dc.relation.ispartofdateto | 2015-11-18 | |
dc.relation.ispartoflocation | Adelaide, Australia | |
dc.subject.fieldofresearch | Materials engineering not elsewhere classified | |
dc.subject.fieldofresearchcode | 401699 | |
dc.title | A case study of a corroded cast iron water main on Bridge Rd, Richmond | |
dc.type | Conference output | |
dc.type.description | E1 - Conferences | |
dc.type.code | E - Conference Publications | |
dc.description.version | Version of Record (VoR) | |
gro.rights.copyright | © 2015 Australasian Corrosion Association. The attached file is reproduced here in accordance with the copyright policy of the publisher. Please refer to the conference's website for access to the definitive, published version. | |
gro.hasfulltext | Full Text | |
gro.griffith.author | Cole, Ivan | |