Advancing pipeline integrity: The role of in-line inspection (ILI) 

In-line inspection (ILI) plays an important role in pipeline integrity management, helping operators identify corrosion, cracking, wall loss and other flaws without disrupting pipeline operation.

Flawed pipeline spools provide known, representative conditions against which ILI tools, inspection techniques and data analysis can be evaluated. Sonaspection manufactures custom pipeline spools up to 40 ft long for ILI validation, calibration, training and technology development, incorporating accurately sized and positioned flaws.

What is in-line inspection? 

In-line inspection, commonly known as pigging, utilises non-destructive testing (NDT) techniques to assess the pipeline condition from within.  

A specialised device, known as a “pig”, travels through the pipeline collecting data on a range of parameters. This data includes information about wall thickness, corrosion, cracks, and other potential flaws, providing a comprehensive assessment of the pipeline’s condition.  

ILI is used across industries where pipelines are integral to operations, including oil and gas, petrochemical, water and wastewater management. The need for regular inspection is driven by the critical role pipelines play in transporting fluids, making their integrity a top priority to ensure safety, environmental compliance, and operational efficiency. 

Why is in-line inspection important for pipeline integrity?

ILI enables operators to assess pipeline condition and identify areas that may require further investigation, monitoring or maintenance. Key benefits include:

• Early detection of flaws and integrity concerns
• Reduced disruption and unplanned downtime
• Extended pipeline lifespan 
• Cost-effective maintenance 
• Improved safety and operational efficiency 

Reliable ILI performance depends on inspection tools software and analysts being able to detect, characterise and size relevant conditions accurately. Representative flawed pipeline spools can play an important role in evaluating this capability.

Including a range of flaws creates a realistic and challenging inspection environment for operators, ensuring that the ILI process is rigorous and accurate. 

Applications of flawed pipeline spools

ILI tool validation
Evaluate the detection and characterisation capabilities of ILI tools against known flaw conditions.

Equipment calibration
Support the setup and calibration of inspection equipment using representative pipeline geometries and flaws.

Research and development
Support the development and evaluation of ILI technologies, sensors, software and data analysis methods.

Training
Provide technicians, engineers and analysts with representative inspection challenges based on known flaw conditions.

Our flawed pipeline spools align with industry standards, promoting the safety and reliability of pipelines in accordance with stringent regulations.