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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