Applus+ in Singapore has been awarded a contract for ILI inspection of offshore pipelines using DTI Trekscan

These pipelines form part of a recent offshore development featuring complex geometries, including short-length segments, tight 1.5D back-to-back bends, mitres, and a complete absence of launcher and receiver facilities. Such characteristics render them incompatible with traditional pigging techniques. In response, Applus+ is deploying the DTI Trekscan tool—an industry-leading solution specifically designed to navigate and inspect pipelines where conventional pigs cannot operate.

Through temporary access fittings, DTI Trekscan is inserted and run bi-directionally through each segment, providing high-resolution ultrasonic wall-thickness measurements. The tool employs pulse-echo ultrasonic testing technology to detect, characterise, and size metal-loss anomalies with exceptional accuracy, generating critical baseline integrity data ahead of commissioning.

DTI Trekscan’s compact, untethered design, coupled with its ability to traverse tight-radius bends and internal restrictions, makes it ideally suited to the offshore environment. Operating at a controlled speed of 1 m/s (2.2 mph), it maintains precise data capture even in pipelines with minimal straight runs and challenging profiles.

This deployment highlights Applus+ proven capability to engineer and execute bespoke inspection programs for offshore assets with non-standard configurations. By integrating DTI Trekscan into its advanced inspection portfolio, Applus+ reinforces its role as a technical partner of choice for clients operating in complex subsea environments.

Applus+ has a strong track record in leveraging state-of-the-art technologies for niche applications—from subsea field developments to midstream interconnects—ensuring pipeline integrity from commissioning through lifecycle operation. This latest contract award reflects the company’s growing leadership in offshore pipeline inspection across Southeast Asia, driven by a commitment to innovation, precision, and operational excellence.