Urban Metro and City Rail
Urban metro and city rail systems operate under strict night maintenance windows, where track inspection must be fast, reliable, and completed before service resumes. The UR18-D dual-rail ultrasonic flaw detection vehicl
Pain Points on These Lines
- Night maintenance windows are too short to complete visual or manual inspection across long track sections
- Single rail inspection equipment requires two passes per kilometre, doubling the time needed
- Heavy inspection vehicles require lifting equipment to get on and off track, delaying deployment
- Manual inspection cannot detect internal rail defects such as transverse cracks in the rail head
- Data from inspections is lost if not recorded immediately, making follow-up review impossible
What These Operators Need
- Inspection equipment that can cover both rails in one pass to reduce time per kilometre
- Lightweight, modular design that allows two people to assemble and disassemble the vehicle on track within five minutes
- Detection speed of at least 15 km/h to keep within short possession windows
- Night-capable lighting with visibility of not less than 2 lx at 50 m
- Data recording of A-scan and B-scan for later review and verification
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View Product →Typical Application Scenarios
- Scheduled ultrasonic inspection of urban metro main lines during overnight maintenance windows
- Periodic inspection of city rail lines where track access is limited to a few hours each night
- Verification runs after rail grinding or replacement on high-traffic city rail corridors
- Inspection of elevated or tunnel sections where access and lifting equipment are restricted
- Deployment of inspection crews across multiple city rail lines with limited setup time
How a Project Runs
Confirm the possession window and clear the track section with the operations team
Assemble the UR18-D modules on track using a two-person crew, completing setup within five minutes
Fill the coupling water tank and verify probe centering and angle from the console
Begin continuous detection at 15 km/h, with A-scan and B-scan data recorded in real time
Mark suspected defect locations for manual verification after the run
Delivery and Support
- Vehicle delivered fully assembled or in modular form based on customer preference
- On-site commissioning and operator training provided with the order
- Technical support available during initial deployment and ongoing operations
- All modules are under 48 kg, allowing manual handling without lifting equipment
- Lighting and detection systems tested and verified before shipment
Frequently Asked Questions
How long does it take to put the UR18-D on track?
Two people can assemble or disassemble the vehicle within five minutes, thanks to the patented modular design and single modules under 48 kg.
Can it be used during night maintenance windows?
Yes. The UR18-D provides lighting reaching not less than 2 lx at 50 m, suitable for night operations in urban metro systems.
How fast does it detect defects?
It runs continuous detection at 15 km/h, which allows efficient coverage within short possession windows.
Does it inspect both rails at once?
Yes. The dual-rail design enables inspection of both rails in a single pass, reducing the number of runs needed.
What happens to the inspection data?
A-scan and B-scan data are recorded in real time and can be transferred to a computer for playback, review, and expert analysis.
Is operator training included?
Yes. Pre-sales, in-sales, and after-sales technical support, including on-site training, is provided with every order.
How is the vehicle delivered?
It is delivered either fully assembled or in modular form, depending on customer needs, with all components under 48 kg for manual handling.
Talk About Your Urban Metro and City Rail Programme
Tell us how many kilometres you inspect and how long your possession windows are and we will suggest the right equipment.