Why Fire-Resistant and Blast-Rated Doors Matter
Doors are the first line of defence in high-risk environments, such as tunnels, industrial facilities, and critical infrastructure, where fires, pressure waves, toxic gases, or explosions can spread instantly. Standard doors often fail under extreme heat or blast pressure, compromising routing and structural compartmentalisation. Hence, certified fire-resistant and blast-rated doors are not optional; they are essential for life safety, operational continuity and regulatory compliance. Our certified fire and blast protection systems are engineered to perform under extreme conditions, ensuring compliance, structural integrity, and life safety.
What is a Fire-Resistant & Blast-Rated Door
A fire-resistant & blast-rated door is a high-integrity, multi-layer engineered barrier designed to maintain structural safety and compartmentalisation during extreme fire and blast events.
Fire Resistance
Designed for RWS, HC and other recognised tunnel and building fire curves.
Blast Protection
Maintains structural integrity against overpressure forces from explosions.
Thermal Shock Stability
Withstands rapid temperature spikes, radiant heat and sudden thermal transitions.
Impact & Debris Resistance
Holds shape under post-blast or post-fire mechanical and debris loads.
Smoke & Gas Isolation
Keeps escape routes and adjacent compartments sealed and safe.
How the Door System Protects Your Facility
Invicta ANARA's passive fire and blast protection solution doors feature certified construction and multi-hazard performance. Each unit provides fire resistance, blast-rated integrity, and smoke containment, ensuring complete safety for tunnels, substations, and critical infrastructure.
The door withstands sustained extreme heat, blocking thermal transfer and preventing structural failure during hydrocarbon or rapid-rise fire events without loss of integrity.
Engineered to absorb and deflect dynamic overpressure loads, the door maintains its sealed position during explosive events, preventing pressure wave propagation into protected zones.
Following a blast or fire event, the door remains operable and structurally intact, preventing ingress of debris and maintaining a safe egress path for personnel.
Intumescent and compression seals activate at elevated temperatures, closing gaps to prevent toxic smoke and gas migration between compartments and along evacuation corridors.
Designed for rapid integration into existing structures, the door’s modular frame system supports retrofitting without major civil works, minimising downtime and installation costs.
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
