Netherlands Organisation for Applied Scientific Research


PO Box 49

2600 AA  Delft



TNO is the Netherlands Organisation for Applied Scientific Research. TNO's primary tasks are to support industry, the authorities and other groups of the community in technological innovation, and to assist clients in solving problems. TNO is a fully independent R&D organisation with a staff of about 4200 and a total turnover of more than 350 million EURO a year. TNO's R&D takes place at thirteen institutes and laboratories, spread throughout the Netherlands.

TNO is involved in almost all Dutch (large) tunnel projects.

Dr. Kees Both


Head of the Centre for Fire Research


He studied civil engineering at Delft University of Technology. In 1990 he started working at the Centre for Fire Research, where he has been involved in research into the fire behaviour of concrete, steel and composite steel-concrete structures. Recently he has been involved in structural fire safety issues of the CTRL (Folkstone to London) and the Øresund tunnel (DK/S). Both has over 20 relevant publications in fire engineering.



Marieke H. Martens M.Sc.


Is employed at TNO Human Factors and has worked with safety research, dealing with the effects of road design, tunnel design and driver behaviour, response, comfort and understandability.


Mirjam Nelisse M.Sc.

she has studied Systems Engineering, Policy Analysis and Management at the Technical University in Delft, the Netherlands. She graduated on a study of the decision process about safety measures at the Westerscheldetunnel and started working at TNO Centre for Fire Research on tunnel safety. She has worked on various European tunnel projects, such as Darts, FIT and now UPTUN. In UPTUN she is involved in the projectmanagement (WP0), but also in the workpackages 1, 2, 3, 5 and 7 (task leader).


Tony Lemaire, M.Sc.

He studied Applied Physics at Delft University of Technology and is a specialist in modelling and predicting fire and smoke spread and radiation heat transfer. He is a senior research engineer at the TNO Building and Construction Research Institute, Center for Fire Research and the main developer of TNO’s Computational Fluid Dynamics code VESTA. Over the last 12 years he has used this code extensively to support research on Fire Safety and Indoor Air Climate, including research on several tunnel projects as e.g. the “Memorial Tunnel” and “High Speed Line South” projects.

Joris Fellinger, M.Sc.

has graduated from Civil Engineering at Delft University of Technology in 1994. He has been working at the Centre for Fire Research of TNO since as scientific expert. In 1996 he started his Ph.D. project into the shear and anchorage behaviour of fire exposed pre-cast pre-tensioned hollow core concrete slabs, which is nearly finished.  In this project, emphasis has been put on the valuation of thermal stresses and constitutive laws for concrete and bond. Currently, he expertise ranges from fire behaviour of concrete and steel structures, both in testing and in advanced assessments using FEM. In this respect he has carried out full scale testing of tunnel linings and modelling of complete structures in fire. Furthermore he has been involved in the EU project into the natural fire safety concept and has a solid background in reliability of structures.

Menso Molag, MSc., Chem. Eng.

did after his graduation ten years research in environmental sciences and industrial safety in the department of environmental Sciences of the University of Groningen. He has worked now 15 years for the department of Industrial Safety of the TNO Environment, Energy and Process Innovation. First as manager of the Department of Industrial Safety and nowadays he is manager tunnel safety studies. He heads multidisciplinary project teams on the development and application of probabilistic and deterministic risk assessment models for the transport of persons and (dangerous) goods through tunnels. He has been project manager of numerous road, rail and metro tunnel  risk assessments in the Netherlands and abroad.  He is the coordinator of the EC thematic network SafeT on tunnel safety. He presented numerous papers on tunnel safety.

Jan Brekelmans, B.Sc., Arch., Struct.Eng., Prod.Eng.

has studied Architecture at Hogere Technische School in Heerlen (1976),  Structural Engineering at Hoger Technisch Instituut in Amsterdam (concrete 1978, steel 1979) and Product Engineering at Algemene Hogeschool in Amsterdam (Flexible Production Management 1992). He is a senior research engineer TNO Building and Construction Research Institute, Centre of Fire Research.. His professional affiliations are  steel-concrete composite structures, thin-plate steel products, cold-formed thin-plate steel sections, building construction logistics, national and international regulations on steel-concrete composite structures, underground steel structures, steel and steel-concrete composite product developments, (experimental) research and advice, steel-concrete composite beams, -/slabs, -/columns, -/joints, -/bridges, tunnels, steel structures in general, ‘Slim floor’ construction with integrated steel beams.


Jaap Weerheim