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.

1. John Galleher
Operations & Maintenance Manager
January 31, 2012

5.  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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6. Data Collection
Construction

Practices
◦ Soils Design Modes Of
Design
Features Operation
◦
◦ Inspection Reports
◦ Installation Techniques Conveyed
Product
Maintenance
Procedures
◦ How the Pipeline is operated
External
Environment
 Develop Performance and Impact Factors
◦ What affects the service life?
◦ How can we extend the life?

7.  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)

8. 8

9.  Test points to measure corrosion activity on
the pipelines
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12. Acoustic Data
Location Data
Fiber Optic
Cable Analysis
Data
Acquisition
System
E-mail
Posted to Website Notification

17.  ROV inspections can:
◦ Reduce impacts to Member Agencies
◦ Decrease cost of shutdowns
◦ Reduce environmental impacts
 Current ROV technology
◦ Video, sonar, and modeling software

18. Power
Supply
Microprocessor
On-Board
Memory
Pinger
Temperature Rotation
Sensor Sensor
Acoustic
Sensor

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20.  Fortunately the Water Authority’s pipelines
are large enough to walk (or sometimes
crawl) inside to collect data.

22. Damaged Area

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28. 28

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30. Installing Steel
Replacement

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25
20
15
10
5
0
1980 1985 1990 1995 2000 2005 2010 2015
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39. Cover prior to 1990

40. Top of Pipe

41. Visit our website: SDCWA.org
sdcwa.org/mobile-news-app
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