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Hazardous Materials Transportation in Tank Cars: Analysis of Risks, Part II.
| 题名： | Hazardous Materials Transportation in Tank Cars: Analysis of Risks, Part II. |
| 作者： | RAJ, P. K. |
| 关键词： | PUBLIC HEALTH; RAILROAD TANK CARS; RISK ASSESSMENT; TRANSPORTATION OF HAZARDOUS MATERIALS |
| 摘要： | In a previous study, sponsored by the Federal Railroad Administration (FRA) and performed by Technology & Management Systems, Inc. (TMS), the risk to the U.S. population arising fiom potential rail accidents involving hazardous materials transported on rail was analyzed. The focus of this study was the development of a risk assessment methodology which considered the differences in structure and strength of different DOT specification tank cars (i.e., their puncture resistance characteristics in accidents), improvements resulting from the provision of increased shell and head thickness, shell head protection, shelf couplers, thermal jacketlinsulation, etc. The risk analysis methodology also considered the physical and chemical characteristics and the hazardous nature of a number of commonly transported chemicals. The overall risks were calculated and plotted as annual frequencies of hazardous material exposure from mainline rail accidents against the severity of exposure (in terms of number of people being potentially exposed). The frequencies and severities were expressed in the (semi-quantitative) categories identified in MIL-Std-882B. The primary purpose of the above study was to review the compatibility of chemicals and tank cars authorized by HM 181 amendment to the Title 49 of the Code of Federal Regulations (49 CFR) and to evaluate (i) whether certain DOT specifications tank cars then authorized to transport certain specific chemicals needed to be strengthened or prohibited fiom transporting those chemicals because of the 'sigruficant' risks such a chemical-tank car combination posed to the population at large, and (i) the magnitude of reduction in risk if a better protected tank car were used to transport the same chemical(s) . |
| 报告类型： | 科技报告 |
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