ventilation solutions for tunnels
Why Halton products for tunnels?
Proven Expertise
A long experience in tunnel ventilation systems worldwide.
Safety First
Solutions designed to manage smoke and heats during normal and emergency conditions.
Energy Efficiency
Optimized airflow control reduces operational costs.
Custom Engineering
Tailored designs for road, rail, and utility tunnels.
CFD-02TM – High temperature tunnel damper
- Maintains integrity and closure during and after tunnel fires, ensuring effective smoke containment and occupant safety is preserved in critical conditions.
- Performs reliably under pressure surges caused by passing trains, so that airflow performance remains stable during high-impact events.
- Delivers long-term durability, so that operational downtime is minimised and lifecycle reliability is assured.
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TDH – Tunnel damper – under development
- Operates reliably in high-temperature tunnel fire conditions, so that smoke control and compartmentation are maintained when it matters.
- Provides low leakage in normal and high temperature conditions, maintaining effective ventilation systems under stress.
- Modular assembly design enabling simplified maintenance and reduced-cost servicing.
- Contact sales for further information
UPE – Under platform extract grille
- Robust construction ensures the grille maintains alignment and structural integrity in demanding industrial environments.
- Flexible mounting options, reducing installation complexity.
- Dependable airflow without the need for powered actuation.
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CPR-01/2H – Fire resistant pressure-relief damper
- Controlled pressure relief with minimal leakage, ensuring compliance with safety and ventilation standards.
- Provides reliable protection in critical fire scenarios. Helping contain fire and smoke within designated zones.
- Flexible and scalable installation, suitable for a variety of duct sizes and structural configurations.
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Air intake systems
- Protects valuable equipment from sea spray, rainwater, and harsh marine conditions → less damage to AHUs, generators, and ventilation systems.
- Less maintenance & downtime thanks to high-efficiency droplet separators → lower repair/replacement costs and improved reliability.
- Robust, tailor-made solutions for tough environments even arctic conditions → built to match real operating conditions
- See our products for air intakes
Use cases
Road tunnels
Maintain air quality and manage smoke during incidents
Rail tunnels
Ensure passenger safety and operational efficiency
Utility tunnels
Control airflows for maintenance and emergency access
References
See Our Solutions in Action
Discover how Halton’s technologies improve indoor environments around the world — from energy-efficient kitchens to clean air in healthcare and marine projects.
Compliance & standards
NFPA 502 – Standard for road tunnels, bridges, and other limited access highways
NFPA 502 is a key safety standard developed by the National Fire Protection Association that focuses on fire protection and life safety in road tunnels, bridges, and similar infrastructure.
EN 12101 – Smoke and heat control systems
EN 12101 is a European standard series that defines how smoke and heat control systems should be designed, tested, and perform in buildings.
ISO standards – International quality and safety benchmarks
An ISO standard is a globally agreed set of guidelines developed by the International Organization for Standardization to ensure products, services, and systems are safe, reliable, and consistent worldwide.
Testing of Halton dampers for tunnel applications
Testing details
- Damper operation at high temperature
- Leakage through the damper
- Mechanical resistance
- Operation at specific pressure differentials
- Speed of operation
- Operational life cycle
Mechanical tests
- 1000 operations at a pressure differential of 1200 Pa and 2500 Pa
- Time for damper to close is no more than 15 seconds
- Structural integrity of the dampers is measured at a pressure differential of 1000 Pa and 4000 Pa
- Leakage – damper subjected to pressure differentials of between 500 Pa and 4000 Pa in 500 Pa increments. Leakage no greater than 0.02m3/s/m2
- Temperature tested up to 400oC for 2hrs and 600oC for 1 hr
Halton Tunnel dampers are tested rigorously
- Dampers tested in both vertical and horizontal orientations
- High temperature testing to 400oC for 2 hours, cycled every 10 minutes.
- CFD-02-TM additionally tested to UL 555 & BS 476 Pt 20, for 2 hrs at over 1,000oC, UL hose stream tested in accordance with ASTM E2226 15b.
- Testing with repetitive loading of the blades to 6,000 Pa x 7.8 million cycles
- Stress analysis of the blades and casing.
- 100,000 cycle durability testing
- Leakage testing in accordance with EN1751:2014 to Class 3 for blades and Class C for casing, including with forced blade deflection and case twist scenarios.
Ready to optimize your ventilation for tunnels?
Contact:
Fraser Campbell
Heavy Industries Sales Manager
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