FESG presents probabilistic model the International Tunnel Safety and Ventilation conference in Graz
From the 12th to the 14th of June, the 9th edition of the International Tunnel Safety and Ventilation conference was held in Graz, Austria. There, FESG presented a paper describing its probabilistic model for assessing the performance of longitudinal ventilation systems.
Tunnels are usually equipped with longitudinal ventilation systems in order to keep the area in front of the fire free of smoke. This is achieved by inducing a flow along the tunnel that confines the smoke downstream the fire according to the direction of the traffic. In order to dimension such a system, the designer has to choose a number of variables such as the position of the fire, the size of the fire, the distribution of the traffic, etc. This choice can either be based on demands imposed by local regulations or the designer’s experience. Several possible fire scenarios can occur which have not been foreseen in the design phase. A probabilistic approach is capable to investigate several fire scenarios and environmental conditions in the tunnel.
A simplified 1D-model was designed to estimate the flow velocity in front of the fire, considering the effect of a number of different fire scenarios. The result of the calculations is a probability that the longitudinal ventilation system, considered in the model, will fail.
FESG wins 2017 FireForum Award
FESG has won the prestigious FireForum Award in the category for architects and consultancies. The fire safety design for the redevelopment of the “Onze-Lieve-Vrouwkerk” in Poelkapelle (West-Flanders) was the best in a whole series of projects. The project was part of a renovation of the church intended for out-of-school day-care, offices for “Kind & Gezin”, a reception area for the municipal staff and a liturgical room. The day-care centre was designed as a “box-in-a-box” concept. The design focussed on an open architecture giving special attention to the implementation of an open staircase and the use of the existing materials. The open staircase, serving as main staircase for the building, connects the different levels of the building creating an atrium in one large compartment. The application of…Read more
Aerodynamics, Ventilation & Fire in Tunnels 2017
On the 13th of september, FESG presented their work on the 17th International Symposium on Aerodynamics, Ventilation & Fire Tunnels (ISAVFT 2017 in Lyon, France). FESG had the opportunity to share knowledge about the state of the art in tunnel’s ventilation. There were many interesting topics, including: Interaction between designers and fire services New energy carriers and how to implement them in fire risk analysis Interaction between ventilation and suppression in underground structures Optimising ventilation strategies in order to limit evacuation times The conference allowed FESG to be challenged on their methodology and solutions by other world leading experts. This allows FESG to continuously provide its clients with new and cost-effective solutions. The paper was a joint collaboration between…Read more
FESG present at Norwegian Tunnel Safety Conference
On September 7th and 8th, FESG was present at the Norwegian Tunnel Safety Conference in Stavanger, Norway. The design of existing and new tunnels is a welcomed service for the Norwegian market: a large number of tunnels are to be built in the coming years (e.g. 300 km of tunnel on E39 project at the west coast); specific challenges associated with long tunnels (e.g. 27 km) and deep fjords (e.g. 300 m deep) give value to validated calculation tools; more than 1000 existing tunnels need to be analysed by means of risk analyses; a large amount of existing tunnels with bidirectional traffic in single tubes give limited possibilities regarding evacuation; a lot of optimisations possible. After 2 successful days, FESG was asked to give a 2-hour presentation to 40 fire safety engineers of a respected international consultancy. In this presentation,…Read more