Abstract
An assessment of parts of transportation infrastructure in terms of hazards to roadside territory is considered. It is suggested to assess individual segments of road and railway network by estimating risks posed by potential fires and explosions on road and rail. Boiling liquid expanding vapour explosion of tanker trucks and tank cars is identified as the most hazardous and likely high consequence accident in the land transport. It is proposed to express the risk to built roadside objects by means of an annual damage frequency. This frequency is considered to be a specific physical characteristic of the road or railway segment under analysis. It is shown that estimating the damage frequency requires assessing effects of a potential explosion on road or rail and developing a fragility function for the roadside object analysed as a potential target. An example case study is presented. It considers a potential thermal damage to a reservoir (stationary tank) built in the vicinity of a highway. The damage can be caused by an explosion of a propane tanker truck. Results of the risk assessment are expressed in terms of probabilities of specific damage events.
Highlights
Safe transport of hazardous materials on land is a significant issue in each national economy
The attention was focused on roads and railways used for transportation of hazardous materials
The prime objective of this study was to explore the possibility of assessing individual road and railway segments which can pose risk to roadside objects in terms of mechanical and thermal damage
Summary
Safe transport of hazardous materials (hazmats) on land is a significant issue in each national economy. The risk related to potential damage to build roadside objects (objects located near roads and railways) was considered only episodically, not in a systematic way This can be explained in part by the simple fact that buildings and stationary equipment of industrial facilities are less vulnerable to effects of hazmat transportation accidents than people and natural environment. Recent examples of such events were disasters caused by derailments of freight trains in the Italian town Viareggio (Toscana, Italy, 2009, 31 person killed) and Canadian town Lac-Mégantic (Quebec, Canada, 2013, 47 persons killed) (Landucci et al 2011; Dekker 2014) Damaging phenomena of these accidents were fires and explosions of hydrocarbons released from tank cars. Main transportation hazards to the infrastructure built in the roadside territory
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