Maintenance strategy for trunk mains: development and implementation of a high spatial resolution risk-based approach

This paper describes an enhanced concept for determining the right time and place for maintenance works (in this case rehabilitation and renewal), within the scope of a risk-based maintenance strategy for trunk mains, including a technical and economic risk assessment. The risks considered include d...

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Published inWater science & technology. Water supply Vol. 13; no. 1; pp. 104 - 113
Main Authors SORGE, Christian, CHRISTEN, Thomas, MÄLZER, Hans-Joachim
Format Journal Article
LanguageEnglish
Published London International Water Association 01.01.2013
IWA Publishing
Subjects
Applied sciences
Buildings. Public works
Cost analysis
Damage assessment
Distribution. Storage
Durability. Pathology. Repairing. Maintenance
Exact sciences and technology
Maintenance
Pipelines
Piping
Property damage
Rehabilitation
Renewal
Repair (reinforcement, strenthening)
Resolution
Risk assessment
Spatial discrimination
Spatial resolution
Submarine pipelines
Water supply. Pipings. Water treatment
Service life
risk assessment
Structure integrity
Spatial analysis
Maintenance
Risk analysis
Water supply system network
trunk mains
Requirement
Water pipe
Strategy
remaining life time
Rehabilitation
Data gathering
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Summary:This paper describes an enhanced concept for determining the right time and place for maintenance works (in this case rehabilitation and renewal), within the scope of a risk-based maintenance strategy for trunk mains, including a technical and economic risk assessment. The risks considered include damage caused by pipe failure (main burst) like revenue loss, third party property damage as well as damage to intangible assets (loss of company reputation). The innovative part of this concept is the intelligent combination of a remaining-service-life prognosis for pipelines with structural load factor verification, technical condition assessments, geo-referenced analyses and detailed costing. This approach allows a very detailed risk assessment of several thousand pipe sections (high spatial resolution approach). The outcome based on this concept are the required maintenance items (what and where) and a catalogue of maintenance actions (how and when) including maintenance type and costs.
Bibliography:ObjectType-Article-1
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ISSN:1606-9749
1607-0798
DOI:10.2166/ws.2012.085