Why Tunnel Fire and Blast Protection Matters
Tunnels are high-risk environments: confined spaces where fire, smoke, high heat, toxic gases, hydrocarbon fuel fires, or explosions can escalate rapidly. Concrete or conventional linings often fail due to spalling, strength loss, collapse risk or collapse of structural integrity under high heat or pressure. Hence, robust fire & blast containment is not optional it's essential for safety, continuity, and compliance.
What Is Tunnel Fire and Blast Containment Wall
A SECURA Tunnel Containment Wall is a high-integrity, multi-layer composite barrier engineered to maintain tunnel safety during extreme events.
Fire Resistance
Designed for RWS, HC and other tunnel fire curves.
Blast Protection
Maintains integrity against overpressure from explosions.
Thermal Shock Stability
Withstands rapid temperature spikes and radiant heat.
Impact & Debris Resistance
Holds shape under post-blast or post-fire mechanical loads.
Smoke & Gas Isolation
Keeps escape routes and adjacent compartments safe.
How the System Protects Your Tunnel
Invicta Anara’s three divisions work as a unified engineering ecosystem combining R&D, certified manufacturing, technical design, installation expertise, and global compliance. Together, they deliver end-to-end solutions that protect, strengthen, and modernize critical infrastructure across diverse industries.
The composite panels block extreme heat, prevent structural damage, and avoid concrete spalling. They keep tunnel structures stable even during hydrocarbon or rapid-rise fires.
The composite panels block extreme heat, prevent structural damage, and avoid concrete spalling. They keep tunnel structures stable even during hydrocarbon or rapid-rise fires.
The composite panels block extreme heat, prevent structural damage, and avoid concrete spalling. They keep tunnel structures stable even during hydrocarbon or rapid-rise fires.
The composite panels block extreme heat, prevent structural damage, and avoid concrete spalling. They keep tunnel structures stable even during hydrocarbon or rapid-rise fires.
The composite panels block extreme heat, prevent structural damage, and avoid concrete spalling. They keep tunnel structures stable even during hydrocarbon or rapid-rise fires.
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 difficult installation, high cost, long downtime for retrofit/repair.
SECURA Tunnel Wall Benefits
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
We partner with you to deliver reliable, purpose-built infrastructure that supports your goals and performs where it matters most.
Energy & Utilities
Energy & Utilities
- Power & Grid Infrastructure
- Energy & Process Facilities
- Onshore & Offshore Assets
- Renewable & Energy Transition
Construction
Construction
- Infrastructure & Building maintenance
- Secure & Hardened Assets
- Border, Coastal & Strategic Installations
- Defence, Security & Strategic Assets
Defence, Security & Strategic Assets
Defence, Security & Strategic Assets
- Defence & Command Facilities
- Critical National Infrastructure (CNI)
- Secure & Hardened Assets
- Border, Coastal & Strategic Installations
Manufacturing
Manufacturing
- Manufacturing & Maintenance
- Border, Coastal & Strategic Installations
- Secure & Hardened Assets
- Defence, Security & Strategic Assets
Infrastructure
Infrastructure
- Defence, Security & Strategic Assets
- Border, Coastal & Strategic Installations
- Critical National Infrastructure (CNI)
- Secure & Hardened Assets Border
Water Treatment
Water Treatment
- Water Treatment plant
- Border, Coastal & Strategic Installations
- Defence, Security & Strategic Assets
- Renewable & Energy Transition
