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Ensuring Pipeline Safety with Advanced Robotic Inspection

CMFL

In early 2022, we introduced a revolutionary sensor technology designed to address the integrity concerns associated with long seam welds in pipelines that are challenging to inspect. Through extensive research, development, and testing, Intero successfully integrated a circumferential magnetic flux leakage (CMFL) sensor into its Pipe Explorer robotic pipeline inspection platform. This innovation, supported by NYSEARCH and the Northeast Gas Association, represents a significant advancement in pipeline inspection technology.

Intero Pipeline pig trap
The Challenge

The Challenge of Long Seam Welds

Long seam welds in pipelines, particularly those made from low-frequency-welded ERW and flash-welded pipes, are prone to various integrity issues. These include selective seam weld corrosion, cracks, and other anomalies that can lead to significant environmental hazards if not properly managed. Traditional free-swimming inline inspection tools are often incompatible with these pipelines due to physical barriers, lack of necessary infrastructure, or unsuitable operational conditions, rendering these pipelines unpiggable.

Innovation

Intero’s Innovative Pipeline Inspection Solution

Intero's Pipe Explorer robotic inspection system addresses these challenges by offering a reliable alternative for inspecting difficult-to-inspect pipelines. Unlike free-swimming tools, which rely on pipeline pressure for propulsion and lack control, the Pipe Explorer uses internal motors and can be maneuvered in real-time. This allows for precise navigation and comprehensive data collection, even in pipelines with complex configurations.

Cross-sectional schematic of the CMFL sensor
A cross-sectional schematic of the CMFL sensor integrated into the Pipe Explorer
Key Features and Benefits

CMFL Sensor Technology

The Pipe Explorer is equipped with a CMFL sensor that detects and measures metal loss, corrosion, and crack-like anomalies near long seam welds. This capability extends to pipelines with diameters ranging from 16 to 26 inches.

Real-Time Control

The robotic inspection platform can be controlled via a cable or wireless signal, ensuring accurate and efficient inspection processes.

Comprehensive Data Collection

The system gathers detailed information about pipeline conditions, enabling proactive maintenance and enhanced safety measures.
MFL Still video 1
Results

Proven Results in Pipeline Safety

Since its deployment, we has assessed over 30 kilometers of pipelines using the robotic inspection method, significantly improving the safety and integrity of these infrastructures. The data collected has been instrumental in facilitating proactive maintenance efforts and addressing various issues, such as selective seam weld corrosion.