doi:10.3850/978-981-08-6396-8_P236

ABSTRACT

In this paper, the development of quantitative risk analysis program for the fire safety in railway tunnel is described. Inside the analysis program, a number of scenarios are constructed using event tree concept. And then, the calculated frequency and consequences (fatalities) are assigned to each scenario. The passenger’s life safety in incident tunnel which corresponds to the consequence of each scenario depends on whether passengers can evacuate safely before untenable conditions occur. In tunnel fire safety, the evaluation of passenger’s life safety is affected by many factors with uncertainties. In order to handle variables with uncertainties, a technique called Monte Carlo Simulation (MCS) is used to solve the present problems. Once the accident frequency and consequence (fatalities) are calculated for each scenario, risk profile for the given design concept can be represented by use of F-N curve. Then the risk assessment can be carried out by using concept of ALARP.

Keywords: Tunnel, Fire, Smoke, Ventilation, Vertical shaft.

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