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TUNNELS

 

Risk analysis of evacuation – Identifying the optimal evacuation option in a tunnel can save precious time and lives, should a hazard occur. The success of the evacuation, however, is dependent on understanding how different factors influence the evacuation process. For instance, in the case of an analysis of a long, high speed two-bore tunnel, Risk Support was able to confirm the interaction, and subsequent effect on the evacuation, of factors such as smoke control, heat radiation, duration of exposure, spacing between crossover passages, etc.

 

Risk analysis of an immersed tube road tunnel - We formulated the first risk tolerability criteria for a road tunnel in the UK. The study primarily looked at hazards relating to external marine traffic. By classifying hazards as sensitive to, or independent of the length of the tunnel, doubt was raised as to whether any criterion based on “per km” could properly apply.