Pipeline Condition and Asset P.E., Management...
Transcript of Pipeline Condition and Asset P.E., Management...
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Pipeline Condition and Asset Management
Chesapeake AWWA – When it Breaks, it Pours January 16, 2014
Ian Mead P.E., BCEEProvidence, RI
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Agenda
• Why is This Important?• Asset Management Framework and Risk• The Condition Assessment Toolbox• Case Studies• Wrap Up
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Why is This Important?
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When it Breaks, it Pours
• Los Angeles Sept. 2009
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When it Breaks, it Pours
• Atlanta GASept. 2009
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When it Breaks, it Pours
• Washington D.C. 2008
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• Providence, RI 1996
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A Wake-Up Call To Utilities
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Approach: Condition Assessment and Asset Management Programs
Defensible & Sustainable
CapitalPlanning
• Review existing information• Determine remaining service life and renewal needs for pipes
• Desktop probability of pipe failure/condition analysis• Review pipe assessment tools and approaches
• Location of buried facilities• Verification of high points• Preparatory field work
(excavations, pipe access, soils, and water)• Procurement of appropriate technology vendors• Implementation of pipe assessment tools
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New Prioritization Approach is a Continuous Process
Capital Plans
GIS Data
Hydraulic Model
O&M DataField Samples
Anecdotal Data
Innovyze CapPlan®
Riva DS
Defensible & Sustainable
CapitalPlanning
Casses/LEYP
ManagementStrategies
KANEW
ASSET CONDITION RANKING
SERVICE LIFE ANALYSISDATA GAP REVIEW
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2011
2023
2035
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2119
Lined DI – 1976 ‐Present
Lined DI 1968 –1975
Lined Cent CI ‐1957 ‐ 1975
Lined Cent CI ‐1936 ‐ 1956
• Service Life Analysis ‐ KANEW– How much is required over time?– Budget impacts shown over time
• Statistical Failure Analysis– What do past breaks/condition say about existing pipe condition?– How strong are correlations and which factors have greater affect on pipes?
• Micro Modeling –Innovyze CapPlan©, Riva DA or Others– Weigh the various parameters that impact renewal– Produces a list of pipe segments for renewal
or inspection
Using Advanced Tools for Inspection Prioritization
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Condition Assessment Toolbox
• Visible Structural Defects‐ CCTV video of all pipe types‐ Valve location and operation
• Finding Pipe Locations & Voids‐ GPR, Potholing, PPR
• AC Pipe Issues• Leaks
‐ All pressure pipe types
• Wall Thickness Degradation‐ Corrosion of Metallic Pipes
• Loss of Wire Prestress‐ PCCP
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Leak Detection Tools
• Pure Technologies– Free Swimming with SmartBall– Tethered with Sahara (Pipe Wall Assessment and CCTV)
• Wachs– Acoustics and CCTV from valve, hydrant, or tap– Assessment and exercising of valves
• Echologics– Acoustic leak detection– Acoustic condition assessment
• Other– Correlators, ground microphones
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Wall Thickness Tools
‐ External vs. Internal?‐ Destructive vs. NDT?
• Ultrasonic/Impact Echo (NDT Corp)• Electromagnetics/BEM/Magnetic Flux Leakage (PICA,
InfraMetrix)• Coupons/Coating Tests• Corrosion Assessments/Sampling
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PCCP Wire/Pipe Assessment Tools
• Electromagnetics (EM – Pure Technologies)• Resistance Testing• Coupons/Wire Tests• Corrosion Assessments/Sampling• Fiber Optic/Acoustic Monitoring of Wire Breaks
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Free Swimming Inline Leak and Gas Pocket Location: SmartBall™
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Investigator™
Wachs Leak Detection
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LDS1000™ by Wachs Water ServicesCondition Assessment of Large Diameter Transmission Mains
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Acoustic Condition Assessment
• Acoustic signals induced in pipe by flowing water or acoustic exciters
• Velocity of acoustic wave is measured, wall thickness is calculated from propagation delay
• Calculated wall thickness is average value for pipe section along which velocity is measured, typically 300 – 400 foot long sections
Noise Source
Measure soundvelocity
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Ultrasonic Investigations
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Ultrasonic (Echo Impact) Investigations of PCCP
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Sonic/ Ultrasonic / Impact Echo Measurements
Full ThicknessPipe Resonance No Resonance Coating Thickness
Resonance
Impact
Sensors
Micro-crackedArea Delamination
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SONIC/ULTRASONIC DATA ANALYSIS
Determines Condition of each pipe section
•Concrete Strength parameters•Core Cracking•Pipe thickness
Coating delamination Erosion
Inner core delamination•Location and severity of deterioration
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PICA Sea Snake for Ferrous Wall Thickness and Pitting
• Ferrous pipe sizes from 4” diameter to 78” diameter.
• Under pressure or in a drained pipeline.
• Measures changes in wall thickness.
• Detect localized pitting and general corrosion
• Can see corrosion on both the interior and the exterior of the pipe.
PICA reports the location and the severity of each defect.
6” tool
20‐28” SeeSnake tool
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PCCP Wire Break Assessment and Monitoring
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Robotic EM Assessment
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Manned EM Inspections
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Free Swimming EM Tool
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Wire Resistance Testing
Electric Resistance Measurements Between Adjacent Wires
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Pipe Penetrating Radar
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Condition Assessment Programs
• Assessment Report– “Real Time” Pipe Condition at Test Locations– Modification of Criticality Analysis (LoF, CoF)– Optimization of System (ARV, Blowoffs, etc.)
• Recommendations for CIP Projects • Develop Emergency Response Plan
– Catastrophic and Critical Pipe Failures– Mitigation of Environmental Impacts– Remediation of Property Damage
• Define or Modify Preventative Maintenance Program
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• Large Water Utility• Impact Echo• Visual Inspection• Hammer Sounding• Soil and Groundwater Testing
• Electromagnetics
• Large Diameter PCCP• Failure Risk curves• Fiber Optic Monitoring • Rehabilitation• 5‐year Cycle• $1M CA Program
Case Study ‐ RI
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• Large Water Utility• Impact Echo• Visual Inspection• Hammer Sounding• Electromagnetics for PCCP
• Acoustic Leak Detection
• Large Diameter Water Transmission Mains
• Tethered Leak Detection• CFRP Repair• Joint Seals• Follow Up Inspections• $500k
Case Study ‐MA
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• Large Sewer Utility• Pump Station Upgrades• Surge Analysis• Soil and Groundwater Testing
• $800k
• Various Diameter PCCP• Failure Risk curves• Acoustic Leak Detection• Acoustic Pipe Integrity Testing
Case Study ‐ NY
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• Large Water Company• Risk Prioritization• Various Diameter PCCP• Evaluate CA Tools• Phased Implementation
• Water Authority• Multiple Types and Diameters
• Pilot Technologies• Risk Prioritization• Evaluate All Assets• Master Plan
Case Study ‐ NJ Case Study ‐ HI
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Wrap Up
• Be Prepared• Evaluate Asset Management Framework• Know Your Toolbox• Be Proactive
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Questions?