water talks: pipeline maintenance
DESCRIPTION
Water Authority Operations and Maintenance Manager John Galleher discusses pipeline monitoring and maintenance on the Water Authority's 300 miles of pipeline. From Water Talks: Building and Securing Water Reliability held on January 31, 2012.TRANSCRIPT
John Galleher
Operations & Maintenance Manager January 31, 2012
Concrete Pressure Pipe (167 mi) ◦ Reinforced Concrete Cylinder
◦ Prestressed Concrete Cylinder
◦ Reinforced Concrete Non-cylinder
◦ Concrete Bar-Wrapped Cylinder
Steel (132 mi) ◦ Concrete Coated
◦ Dielectric Tape Coated
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Data Collection ◦ Soils
◦ Design
◦ Inspection Reports
◦ Installation Techniques
◦ How the Pipeline is operated
Develop Performance and Impact Factors ◦ What affects the service life?
◦ How can we extend the life?
MaintenanceProcedures
Modes OfOperation
ConstructionPractices
ConveyedProduct
ExternalEnvironment
DesignFeatures
In Service ◦ Collect Pipeline Data Soil corrosivity, chemical analysis, etc
◦ Remotely Operated Rectifiers (corrosion control) ◦ Acoustical Fiber Optic Monitoring (wire breaks) ◦ Remotely Operated Vehicles (ROV’s) ◦ Leak Detection
Out of Service ◦ Visual Sounding, cracks, separated joints, etc.
◦ Electromagnetics (concrete pipe) ◦ Magnetic Flux Leakage (steel pipe)
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Test points to measure corrosion activity on the pipelines
Fiber Optic Cable
Location Data
Acoustic Data
Data Acquisition
System
Analysis
E-mail Notification Posted to Website
ROV inspections can: ◦ Reduce impacts to Member Agencies
◦ Decrease cost of shutdowns
◦ Reduce environmental impacts
Current ROV technology
◦ Video, sonar, and modeling software
Power
Supply
On-Board
Memory
Acoustic
Sensor
Microprocessor
Temperature
Sensor
Rotation
Sensor
Pinger
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Fortunately the Water Authority’s pipelines are large enough to walk (or sometimes crawl) inside to collect data.
Damaged Area
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Installing Steel Replacement
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1980 1985 1990 1995 2000 2005 2010 2015
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Cover prior to 1990
Top of Pipe
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