Pipeline Inspection

MISTRAS delivers robust pipeline inspection methodologies, including conventional and tethered inline inspections (ILI) and proprietary inspection technologies, to detect and mitigate metal loss, deformation, and corrosion threats.

Pipeline operators face increasing demands to ensure safe, efficient transport of oil, gas, and refined products. With regulatory pressure, heightened environmental concerns, and the ongoing need to maximize throughput, highly-accurate and cost-effective inspection solutions have never been more important.

To help pipeline operators precisely identify corrosion, mechanical damage, and geometrical deviations to maintain operational safety and regulatory compliance, MISTRAS Group offers an integrated portfolio of inspection solutions and technologies.

With conventional and tethered inline inspection (ILI) pigging solutions, advanced and traditional non-destructive testing (NDT) solutions, and cutting-edge, proprietary technologies such as the TriStream MFL™ ILI tool and our Automated Radiographic Testing (ART) Crawler services, MISTRAS empowers pipeline operators to effectively manage risk, reduce operational downtime, and maintain critical infrastructure in compliance with stringent industry regulations. 

By combining superior sensor technology and detection capabilities with comprehensive field support, MISTRAS helps you safeguard performance and extend the lifespan of your pipeline assets.

Conventional Inline Inspection (ILI) Services

Our conventional in-line inspection (ILI) pigging tools deliver anomaly detection and sizing by integrating ultra-high-resolution triaxial sensor technology with advanced signal processing. This robust coverage ensures pipeline operators and integrity engineers can proactively address threats such as pitting, general corrosion, and dent-to-weld interactions.

• 3” – 36” Geometry: Caliper logs identify ovalities, dents, and geometric anomalies, correlating data with potential stress risers.
• 3” – 36” MFL/Geo Combo: Magnetic Flux Leakage data, combined with geometry readings, offers dual-layer detection of corrosion and mechanical deformation.
• 3” – 36” IMU: Inertial Measurement Units (IMU) accurately map pipeline routes and detect bending strains, aiding in precise alignment sheet updates and robust dig programs.
• Variable Speed Control: Supports high-velocity gas lines by maintaining stable magnetization profiles and sensor contact.

Tethered Inline Inspection (ILI) Services

For pipelines with unidirectional flow constraints, short segments, or limited launcher/receiver infrastructure, MISTRAS' tethered pigging inspections provide scalable, cost-effective solutions. Tethered inspections provide the flexibility needed to ensure data quality in pipelines that cannot accommodate traditional pigging runs or have atypical flow conditions.

• Ultra-High-Res Triaxial Sensor Technology: Delivers detailed axial and circumferential resolution, capturing subtle material loss.
• 3” – 18” Bi-directional (Bidi) Geometry & 3” – 18” Bidi Combo w/IMU: Suited for bidirectional segments, capturing both geometric and MFL data along with accurate positional references.
• 3” – 36” Unidirectional: Targets larger-diameter segments using a single pass, minimizing operational interruptions.
• Wireline and Synthetic Rope: Facilitates deployment in challenging or remote locations.

Field Services

Quality field services are key to effective ILI campaigns. MISTRAS’ services include:

• 4” – 12” IGT (Intelligent Gauge Tool) Inspection: Detects out-of-round conditions, enhancing subsequent tool passage and data reliability.
• Polyurethane Cleaning Pigs & Traditional Cleaning Pigs: Remove debris, wax, and other deposits, ensuring optimal sensor contact and reducing noise.
• Turnkey & Third-Party Emergency: Rapid response teams mitigate unplanned events, safeguarding asset integrity and minimizing downtime.

TriStream MFL Services

MISTRAS Group’s TriStream MFL™ is an ultra-high-resolution inline inspection (ILI) tool designed to detect internal and external corrosion morphologies. By measuring magnetic flux leakage (MFL) in multiple vectors—axial, radial, and circumferential—this innovative solution provides a more comprehensive view of metal loss, deformation, and overall pipeline health than standard single- or dual-vector tools. TriStream MFL also integrates caliper and Inertial Measurement Unit (IMU) data, helping operators gain a complete picture of pipeline anomalies and positioning in one pass.

Discover more about TriStream MFL services here.

ART Crawler Pipeline Inspection Services

The Automated Radiographic Testing (ART) Crawler inspects both insulated and non-insulated pipelines (4” – 60”), with detection thresholds as low as 10% wall loss. This technique significantly streamlines Corrosion Under Insulation (CUI) and internal corrosion assessments by eliminating the labor- and cost-intensive needs to remove insulation or product from the line, yielding faster turnaround for large-scale screening.

Learn more about MISTRAS’ ART Crawler services here.