Assessment of hazardous material risks for rail yard safety |
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| Institution: | 1. School of Business, George Washington University, Washington, DC 20052, USA;2. Bilkent University, Faculty of Business Administration, Bilkent, Ankara, Turkey;1. Division of Operation and Maintenance Engineering, Luleå University of Technology, 97187 Luleå, Sweden;2. Luleå Railway Research Centre, 97187 Luleå, Sweden;3. ReliaSoft Corporation, Tucson, AZ 85710-6703, USA;4. Swedish Transport Administration, 97125 Luleå, Sweden;1. Faculty of Business Administration, Memorial University of Newfoundland, St. John’s, Newfoundland and Labrador A1B 3X5, Canada;2. DeGroote School of Business, McMaster University, Hamilton, Ontario L8S 4L8, Canada;1. Department of Chemical and Materials Engineering, School of Engineering Safety and Risk Management, University of Alberta, Edmonton, Alberta, T6G 1H9, Canada;2. Department of Mechanical Engineering, University of Alberta, Edmonton, Alberta, T6G 1H9, Canada;3. Department of Civil and Environmental Engineering, School of Engineering Safety and Risk Management, University of Alberta, Edmonton, Alberta, T6G 1H9, Canada |
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| Abstract: | This paper illustrates the application of quantitative risk assessment in a rail yard where tank cars of hazardous materials are received and stored. The assessment was conducted in response to community concerns about the safety of a proposed yard expansion. Six different chemicals are involved. For each one, the average monthly volume and the hazard of most concern are specified. We use an event tree populated with empirical data to compute the probability of a major spill in each case and we estimate the corresponding critical impact distances using available modeling tools. We find that for some of the chemicals, the relative increases in risk are appreciable, but that in all cases, the absolute levels of risk remain low. Then we identify some ways in which such an analysis can be extended and discuss the potential difficulties associated with these extensions. |
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