Dubai’s Roads and Transport Authority, working alongside metro and tram operator Keolis MHI, has executed a comprehensive program to renew and rehabilitate the tunnel ventilation system across all underground stations and facilities on the Dubai Metro Red and Green lines, aimed at long-term network safety and air quality.
Maintaining an underground rail network running through desert heat requires rigorous behind-the-scenes engineering. According to Albayan, the Roads and Transport Authority (RTA) launched the initiative to upgrade environmental controls across all ground-level stations and associated facilities on the Red and Green lines. The primary goals are to boost system efficiency, improve air quality, and secure the long-term safety of the metro network.
Four Core Operational Tracks for Ventilation Renewal
The rehabilitation program relies on four primary workstreams designed to overhaul aging environmental control hardware. Dawood Al Rais, manager of the rail maintenance department at the RTA’s Rail Agency, outlined the specific technical components targeted by maintenance crews.
- Replacing variable frequency drives (VFDs)
- Comprehensive overhauls of dampers and shock absorbers
- Replacing actuators
- Comprehensive overhauls of ventilation fans
These technical upgrades are intended to raise operational readiness while extending the working lifespan of vital transit assets, aligning with global standards for safety and sustainability across the Dubai Metro network.
Detailed Damper Refurbishment and Testing Protocols
Engineering teams have placed particular emphasis on rehabilitating shock-absorbing dampers through a multi-step maintenance cycle. According to Albayan, the restoration process involves detailed inspections, deep cleaning, lubrication, and necessary repairs or replacements. Once these steps are finished, technicians execute comprehensive functional testing to verify stable performance and ensure the extended durability of the equipment.
The program includes four main work tracks: replacing variable frequency drives (VFDs), comprehensive overhauls of dampers, replacing actuators, and comprehensive overhauls of fans. The program currently focuses on rehabilitating dampers through a precise process that includes detailed inspection, deep cleaning, lubrication, and repair or replacement, followed by a comprehensive functional test to verify the condition of the dampers and their return to stable operation, thereby extending their efficiency and lifespan. Dawood Al Rais, Rail Maintenance Department Manager, Rail Agency, Roads and Transport Authority
By systematically addressing wear and tear on components like dampers and fans, the RTA ensures that the physical infrastructure underpinning passenger safety remains resilient against continuous daily stresses.
Overnight Shifts and Off-Peak Execution to Protect Passenger Schedules
Carrying out heavy engineering work on an active rapid transit system presents logistical challenges. To prevent disruptions for daily commuters, the RTA scheduled the ventilation rehabilitation campaign outside peak travel hours and during overnight shifts. Albayan reported that conducting the maintenance overnight accelerated the pace of repairs without impacting normal metro operations.
This nighttime strategy highlights the agency’s institutional commitment to service quality and asset sustainability, ensuring a smoother and safer transit experience for metro riders while modernizing core infrastructure out of the public eye.
