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Pipeline In-line Inspection  

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Effective pipeline integrity management can be problematic for the large number of pipelines that were not designed for in-line inspection (traditionally unpiggable pipelines). Quest Integrity understands the complexities involved with this challenging segment and offers a comprehensive pipeline integrity management solution – the InVista ultrasonic (UT) in-line inspection tool, data analysis, advanced engineering assessment capabilities and related pipeline integrity management services.

This unique, bi-directional ILI tool accommodates 2" – 30" pipeline diameters (including dual and multi diameter), and provides 100% overlapping coverage of geometry and metal loss features. Designed to overcome the most difficult inspection environments, its operational simplicity and navigation capabilities are unmatched in the pipeline industry. Lightweight and compact, the InVista tool can be launched by hand and is ideal for space-constrained environments such as wharf lines and offshore pipelines.

Following the field inspection and preliminary report, the high-quality ILI data is analyzed for wall loss and anomalies such as corrosion, denting and ovality. LifeQuest Pipeline software assesses the pipeline’s fitness-for-service and quantifies the extent of metal loss damage. The remaining strength factor (RSF) and reduced maximum allowable operating pressure (MAOPr) are also determined for the complete data set. A final report including the data analysis and assessment results is delivered for each ILI (in-line inspection) project along with the LifeQuest Pipeline data viewer.

Service Highlights

Explore the features of Pipeline In-line Inspection

  • Bi-Directional ILI Tool
    • Provides 100% overlapping coverage of pipeline geometry and pipeline metal-loss features in a single pass
    • Inspects 2"-30" (DN50–DN750) diameter and dual diameter pipelines
    • Navigates back-to-back bends with >90° short radius turns
    • Navigates bore restrictions, step changes, reduced port valves
    • Accommodates limited or missing launcher/receiver facilities
    • Functions in low flow or limited flow conditions
    • Inspects non-standard and bulging pipe material
    • Identifies significant wall thickness changes and pipeline wall loss
    • Accommodates single entry/exit, line stoppage, plugged valves
    • Traverses bottom unbarred tees, wyes and mitre bends



  • Ultrasonic Tool Benefits
    • Lightweight, hand-held intelligent pig reduces safety and operational risk
    • Lower pressure differential requirements and bi-directional capability minimize line disruptions
    • Unique design reduces wear, impact and debris collection
    • Ultrasonic inline technology measurement delivers accurate, repeatable results
    • Linear ultrasonic sizing minimizes verification digs and improves excavation and repair confidence
    • Permanent line modifications not required
    • Efficient pipeline inspections minimize offline status
    • Onsite turnaround and rapid pipeline geometry inspection data analysis allows real-time operating decisions
    • Ultrasonic inline inspection technology does not permanently magnetize pipe like magnetic flux leakage tools, thereby eliminating demagnetization repairs

  • Inspection Applications
    • Offshore pipelines
    • Airport fuel transfer systems
    • Compressor and pump stations
    • Corrosion under insulation (CUI)
    • Delivery and tank farms
    • Distribution lines
    • Exploration and production injection lines
    • Gathering lines
    • New construction baselines
    • Petrochemical fuel stock lines
    • Pipelines with limited or missing data
    • Product and fuel loading lines
    • Restricted or improperly designed liquid lines
    • Road crossings and casings
    • Terminal storage lines
    • Upstream gathering and flow lines
    • Water distribution lines
    • Wharf lines, station and jetty connections


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Find out more about Pipeline In-Line Inspection

  • InVista™Animation Quest Integrity understands the complexities involved with this challenging segment and offers a comprehensive pipeline integrity management solution – the InVista™ ultrasonic (UT) in-line inspection tool, advanced data analysis and engineering assessment capabilities. Click the link to the left to play the associated animation.
  • InVista™ Subsea Animation Effective integrity management of subsea pipelines has been especially challenging due to the difficulty of pipeline access, safety and other considerations. InVista Subsea, an advanced ultrasonic ILI tool from Quest Integrity, provides a solution for these challenging and difficult pipelines. Click the link to the left to play the associated animation. 
  • Pipeline Integrity Brochure

  • Heavy Bore Case Study

  • Wharf Line Case Study

  • Offshore ILI Case Study


  • 16-Inch InVista Case Study


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Complete integrity management services designed to help companies meet the complexities involved in pipeline inspection projects.

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A multi-disciplinary approach to evaluate structural components to determine if they are fit for continued service.

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Quest Integrity has deep expertise across a wide breadth of technical disciplines including fitness-for-service, remaining life, materials consulting and management, failure analysis, risk-based inspection, and corrosion consulting and management.

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