Why Tunnel Fire and Blast Protection Matters
Tunnels are high-risk environments where fire, smoke, and pressure escalate in seconds. Conventional concrete isn’t built to withstand these extremes; it spalls and weakens, increasing the risk of structural collapse and blocking vital evacuation routes. Our certified fire and blast protection systems are engineered to perform under extreme conditions, ensuring compliance, structural integrity, and life safety.
What Is Tunnel Fire and Blast Containment Wall
A SECURA tunnel containment wall is an engineered composite system designed to withstand severe fire and explosion scenarios, protecting tunnel structures and maintaining structural integrity and safety under extreme conditions.
Fire Resistance
Designed to withstand severe tunnel fire curves while maintaining structural integrity.
Blast Protection
Resists blast overpressure to protect tunnel structures and critical infrastructure.
Thermal Shock Stability
Handles rapid temperature spikes and intense radiant heat without loss of performance.
Impact & Debris Resistance
Maintains strength against debris and mechanical loads following fire or blast events.
Smoke & Gas Isolation
Helps contain smoke and hazardous gases to support safer evacuation routes.
How the System Protects Your Tunnel
Invicta ANARA integrates three connected capabilities — research and development, certified manufacturing, and technical installation — that work to reduce the risk of compatibility issues across the project life cycle. Panels are designed, tested, and installed to a unified quality standard, enabling full traceability from material selection through to on-site performance. All systems are engineered to meet EN 1363, RABT, HCinc, and project-specific fire curve requirements.
Advanced composite panels withstand extreme heat, limiting structural damage and maintaining tunnel stability during hydrocarbon and rapid-rise fire events.
Engineered systems absorb blast forces and pressure waves, protecting critical tunnel infrastructure and reducing structural risk.
Robust containment walls control falling debris after incidents, reducing hazards and supporting safer recovery operations.
Containment systems limit the spread of smoke and hazardous gases, supporting safer evacuation and emergency response.
Modular designs enable efficient installation and integration into both new-build and existing tunnel structures.
Performance & Technical Specifications
Fire & Thermal Protection
EI 120–240 min fire resistance (standard & high-heat variants).
Compatible with HC, RWS, and tunnel fire curves.
Prevents concrete spalling and protects steel reinforcement under extreme heat.
Smoke & Gas Containment
Fully sealed system blocks smoke, toxic gases, and hot fire-gases.
Enables safer evacuation and rescue paths.
No hazardous post-event debris or collapse.
Blast & Impact Resistance
Engineered to withstand high overpressure events.
Maintains structural integrity after combined fire + blast scenarios.
No hazardous post-event debris or collapse.
Materials & Construction
Non-combustible, moisture- and corrosion-resistant composite system.
Lightweight vs concrete; fast installation and easier maintenance.
Modular panels fit new builds, retrofits, and complex tunnel geometries.
Advantages Over ConventionalTunnel Protection Methods
Traditional Methods
Concrete or plain-lining risk of spalling, reinforcement failure, structural collapse under fire/heat.
Spray-applied fireproofing / fire boards / mortars may require frequent maintenance, have limited durability, may degrade upon moisture or impact
Passive fire barriers only (fire partitions, boards) limited or no blast, impact, debris, or smoke/gas protection.
Heavy & bulky steel/concrete barriers are difficult, high-cost and have long downtime for retrofit/repair.
SECURA Tunnel Wall Benefits
The composite barrier prevents spalling, maintains integrity, protects reinforcement & structure under extreme fire or blast.
Durable, moisture-resistant, corrosion-proof composite system — long lifecycle, low maintenance, high resilience.
Multi-hazard protection (fire, blast, impact, smoke/gas, thermal, acoustic), enabling comprehensive risk mitigation.
Lightweight modular panels — faster installation, retrofit friendly, minimal disruption to tunnel operations.
Sectors We Serve
Our solutions are designed for sectors where infrastructure reliability, safety, and long-term performance are critical.
Energy & Utilities
Energy & Utilities
- Power & Grid Infrastructure
- Energy & Process Facilities
- Onshore & Offshore Assets
- Renewable Energy Infrastructure
Industrial
Industrial
- Chemical & Process Plants
- Manufacturing & Heavy Industry
- Hazardous Material storage facilities
- Automotive & Industrial Campuses
Transportation
Transportation
- Airports & Aviation Facilities
- Metro, Rail & Mass Transit Systems
- Roads, Highways & Vehicular Tunnels
- Ports, Shipyards & Marine Transport Infrastructure
Defence
Defence
- Defence & Command Facilities
- Critical National Infrastructure (CNI)
- Secure & Hardened Assets
- Border, Coastal & Strategic Installations
Infrastructure
Infrastructure
- Data Centres & Digital Infrastructure
- Public Venues & Stadia
- Cultural & Institutional Buildings
- Government & Diplomatic Facilities
Commercial/Mixed-Use
Commercial/Mixed-Use
- Hospitality & Leisure
- Financial & Commercial Buildings
- Mixed-Use Landmark Developments
