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RECENT ADVANCES IN PIPE WALL ASSESSMENT TECHNOLOGY
Mechanical Department, BVIT, Navi Mumbai.
Presented by
Dilip Thakur Prasad Gurav
Siddhesh Shingte
System to convey fluids Discipline of piping design studies the
efficient transport of fluid. Industrial process piping manufacturing In-line components senses and controls Piping sometimes refers to Piping Design
Introduction
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Piping technology developed slowly from Roman period
Wooden piping found in 1890’s Import of cast iron from the U.S in the 1960’s Light-gauge copper tubing coming on the
market in the 1930’s In 1926 the PVC pipe was invented but not
manufactured until 1940’s
History
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Stress Material Installation Inspection Third party damage Cracking Corrosion
Failure Modes of Metallic Mains
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Individual defect detection
Spot checks with statistical extrapolation • Coupons• Ultrasonic testing•Electromagnetic
Full length in-line testing •Electromagnetic testing • In-line leak location • CCTV inspection
General condition assessment
Desktop studies • Failure history • Soil analysis • Other existing data
Average wall thickness • Acoustic pipe wall assessment
Inspect part of pipeline; predict the rest
Inspect entire pipeline
Framework for Pipe Assessment Tools
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low frequency acoustic pressure wave induced in pipe
This pressure wave causes pipe wall to “flex” on a microscopic level
Acoustic Pipe Wall Assessment
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Thicker (and therefore stiffer) pipe walls are more resistant to this “breathing,” causing the wave to travel faster
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Required instrumentation is sent inside pipes using smart pigs
Often requires shutdown of line, installation of launch & retrieval sites, and cleaning of pipes to remove tubercles and debris
Inline electromagnetic methods
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Provides a continuous profile of pipe ‐wall thickness.
Data acquisition and analysis are labor and cost intensive
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Detection of leaks and condition assessment
Leakage detection technology Minimize disruption to normal
operation
Internal Free Swimming Pipeline
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Smart Ball® technology is a free swimming device
The Smart Ball® technology was originally developed and successfully implemented for the water industry.
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Reduces overflows, violations & failures Prioritizes repair and maintenance efforts Reduces emergency repairs or dig &
replace Modern technologies utilize trenchless
condition assessment and rehabilitation techniques
Can save a lot of money!
Benefits of effective condition assessment
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A well-run Condition Assessment & Rehabilitation Program provides a systematic, consistent, & cost-effective approach to asset management
Supports long term capital expenditure planning Effective in forecasting future maintenance needs,
prioritizing resource allocation, and costs based on inspection & condition assessment ratings
Reduces potential overflows, violations & failures Utilizes trenchless technology Can save a lot of money!
Conclusion
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Any Questions ?
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