Pipeline Pigging & In-Line Inspection Services
Operators cannot see inside a live pipeline. Corrosion thins the wall, cracks grow, the line shifts — and, often, none of it shows until it cannot be deferred. Dexon’s in-line inspection (ILI) fleet shows operators all of it. A sensor-covered tool travels with the product flow, recording wall condition along the entire run, often in service. Dexon runs ILI from 3 in. to 64 in., sizing cracks, corrosion, geometry and movement for just about every pipeline type and configuration.
Pipeline Threats Assessed
Crack
• Stress corrosion cracking (SCC)
• Hook cracks
• Longitudinal seam cracking
• Weld-crack differentiation
Corrosion
• Pitting corrosion
• General wall loss
• Corrosion clusters
• Grooving & slotting
Geometric Defects
• Bending
• Dents
• Ovality
• Roof topping
• Wrinkles
• Buckles
Pipeline Movement
• XYZ route mapping
• Pipeline movement
• Strain analysis
Multi-threat
• Dents & gauges with corrosion
• Cracking with dents
• Cracking with corrosion
Pipeline Types Assessed
Upstream
• Wellhead flowlines
• Gathering systems
• Gas wells
• Produced water pipelines
Midstream
• Crude oil transmission lines
• Refined product pipelines
• Jetty & terminal pipelines
• Cross-country pipelines
Downstream
• Refinery & tank farm transfer lines
• Chemical pipelines
• Jet fuel systems
• Terminal loading & unloading lines
Supply
• Field gathering headers & trunk lines
• Wellhead flowlines and jumpers
• Produced water and water injection lines
Unpiggable
• Multi-diameter pipelines
• Pipes with unknown ID
• Tight-radius & back-to-back bend
• Low-flow and intermittent-flow lines
Mining
• Submarine tailings disposal (STD) lines
• Process water pipelines
• HDPE slurry lines
• Offshore discharge pipelines
In-Line Inspection & Intelligent Pigging Technologies
Research, Development & Engineering
Test With Confidence
Rental Test Yard for In-Line Inspection Tool Qualification
The largest in-line inspection test yard in Asia — available for operators or inspectors seeking a third party or the facilities to verify performance.
Qualify multiple methods for multiple threats — MFL, UT, EMAT, and emerging tools benchmarked for POD, POI and POS against industry-aligned defect libraries
Two facilities, 4-in. to 52-in. — a 150 m closed-loop pipeline in 6-in. to 24-in., plus pull and push test strings from 4-in. to 52-in., with custom sizes built on request
Your geometry, not a generic loop — custom spools with back-to-back bends, 1.5D bends, tees, reducers, dual-plane configurations, and more
Conditions that match the run — up to 15 bar and 3.3 m/s in the loop and 0.5 to 5 m/s on the pull rig, with distance, speed, pressure and pull force logged throughout
Prove endurance and passability — 32-hour or more closed-loop fatigue runs that ensure that a pig can finish the run with confidence
The Dexon Difference
Tools tailored to the pipeline: Dexon designs, fabricates, assembles, & tests under one roof — delivering tools that meet the operational constraints of operators.
Rapid turnaround for complex projects: Backed by a robust research, development, & engineering team, 7-acre testing facilities, and in-house parts production, operators can go from request to a purpose-built tool in their pipeline in under two months.
Exceptional high-resolution UT data: Dexon’s fleet of UT tools has industry-leading specs — providing more precise monitoring of defect growth & fewer unnecessary shutdowns because of wide sizing tolerances.
Inspectors with deep field expertise: Dexon has 45 years of NDT inspection experience and 30 years in the in-line inspection industry — all built while working with some of the biggest names in the industry.
Need an ILI Partner for Pipeline Pigging & In-Line Inspection Services ?
Combining a robust fleet of UT tools with bespoke engineering, we deliver the integrity data operators need to make confident decisions.