Fire protection in tunnels

The requirements for fire safety are extra high in tunnels, rock chambers, garages and other underground spaces. Täby BrandskyddsTeknik has world-leading expertise in this area.

Fireproof underground

People who travel or stay in tunnels and other underground spaces have the right to place extra high demands on preventive and active fire safety.

TBT’s Tunnel section has solid experience in this area, and a close collaboration with tunnel builders, community planners, researchers, consultants and manufacturers of modern materials, products and systems for effective fire protection.

Our services in this area include a needs inventory, planning, implementation and coordination with regard to fire protection as well as other functional and purely aesthetic aspects in connection with tunnel work.

About fire protection in tunnels

In the event of a fire, the load-bearing concrete in the tunnel roof and walls heats up very quickly. Within a few minutes, the temperature in the concrete can reach almost 1200 ° C. The moisture present in the surface layer of the concrete evaporates immediately, otherwise it seeks inwards and a large part accumulates at the rebar. The moisture expands and the concrete ruptures with explosive force, causing the tunnel to collapse in many cases.

Minimizing the risk of such a process is by far the most important aspect of fire protection in tunnels, and it is in this area that Täby BrandskyddsTeknik has world-leading expertise.

World-leading expertise in fire protection

We at TBT have world-leading expertise in fire protection of tunnels, and are often hired by tunnel builders around the world to increase safety and eliminate unnecessary costs.

In addition to the vital work of fireproofing the concrete itself in the tunnel’s roofs and walls, we offer all existing products and services for prevention and active fire protection in other constructions.

In fire protection, we can help you with, among other things:

  • Fire insulation, fire painting and sectioning
  • Flue gas tunnels and escape doors
  • Emergency lighting, emergency and evacuation signs etc.
  • Alarms, firefighting equipment, first aid etc.

We also perform

  • Noise reduction measures
  • Aesthetic treatment of all normally occurring surface layers, with or without underlying fire protection.


The city tunnel in Stockholm

Citybanan is an approximately 6 km long railway tunnel that is being built under Stockholm’s inner city on behalf of the Swedish Transport Administration. The construction was started after several years of planning in 2009 and is expected to be completed in 2016. In addition to the double track tunnels, a service and rescue tunnel will be built.

At the beginning of 2014, the General Contractors hired Täby BrandskyddsTeknik to review the fire protection and remedy any shortcomings in this. This review resulted in relatively extensive changes to the original floor plans – not only to ensure adequate fire protection, but also to eliminate unnecessary costs.

In these videos you can follow how we from Täby BrandskyddsTeknik work with tunnel assignments