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May 20, 2019


 Road tunnels and technology in an operational perspective
Arild Petter Sovik, Tunntech Global News

New research from Belgium conclude that mobile fans can be used for controlling smoke in tunnels. However there are limitations on how effective mobile fans is, but also the conditions that which is the basis for research. However mobile fans are so much more than a single fan, it can provide additional water, have adjustment options in height and be used to move vehicles and debris.  

We where invited to witness a full scale low pressure water-mist fire test in the well-known Applus+ "San Pedro de Anes" Experimental Centre, last week. The host of the event was VID Fire Kill ApS, a danish based Low Pressure Watermist manufacturer. 

The Tunnel Fire Training and test centre, Centro Experimental "San Pedro de Anes" has long traditions in carrying out full scale fire tests, and has been a valuable partner in important tunnel fire research programs in Europe.

Lund University and SINTEF independent research organisation, are conducting a survey in which they seek attendees. In the experiment, the subjects will move in a computer-generated environment and the study is investigating human behaviour in a road tunnel where different incidents can occur. 

The peak organisation of Australasian road transport and traffic agencies, Austroads, identifies factors that contribute to the occurrence and severity of collisions adjacent to and within tunnels and suggests remedial treatments. The objectives of this study were to identify factors that contribute to the occurrence and severity of collisions adjacent to and within tunnels and remedial treatments that will reduce the incidence and severity of these collisions.

The increased use of new energy carriers in subterranean spaces will break new grounds in terms of public safety. The SUVEREN project investigates physical phenomena that may occur in connection with the use of new energy carriers, and will investigate the fire behavior of electric batteries and gas pressure vessels as well as composite materials installed in vehicles. 

A literature survey seeks to acquire and compile knowledge that can enhance self-rescue for people in a critical situation during a tunnel fire in long bi-directional single tube road tunnels. 

Heavy vehicles are overrepresented in the statistics of fire in Norwegian road tunnels, and this is especially true for steeper tunnels. Technical problems was a more than twice a frequent cause of fires and instances of fires in heavy vehicles, than in light vehicles says the Institute of transport economics, Norwegian Centre of Transport Research. 40% of the fires in tunnels happens in tunnels with higher incline than 5%. 

There is strong political support in the European union to take action on serious injury. In 2010 the Council of the European Union underlined the urgent need to address serious injuries, supporting the development of a common definition and agreeing to the principle of a specific quantitative target.

The purpose of the study was to test different characteristics of evacuation light. The study was carried out in a 40 foot long container and the fixtures were mounted approx. 1 meter above the floor and the study is based on a visual experience of the different light sources, and is considered a preliminary study of performance of evacuation lighting in tunnels.

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