A Guide for Assessing Community Emergency Response Needs and Capabilities for Hazardous Materials Releases (2011) / Chapter Skim
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Pages 37-40
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From page 37... ...
Adding Risk to the Hazardous Materials Portfolio Until this point, the various incident scenarios that could occur in the region have been identified and the consequences assessed without regard to likelihood or frequency. The vulnerability term, which will be discussed next, provides a way of assigning a risk level to each scenario.
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From page 38... ...
Based on the last column in Table 20, the vulnerability term would be assigned as "low" if the hazardous material that could damage the iconic structure or the critical infrastructure were present in the area only a few times a year. When you consider vulnerability from the safety perspective, the term for a transport corridor has several components: number of vehicles carrying the hazardous material, incident rate for those vehicles, hazmat involvement, and hazmat release.
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From page 39... ...
Appendix B contains more detailed examples regarding vulnerability calculations. Hazardous Materials Portfolio Example The following discussion uses a hypothetical jurisdiction and evaluates each of the terms in the risk equation to determine a risk metric for each scenario.
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From page 40... ...
The risk metric shows that the dominant risk is from toxic gas releases. If emergency response capabilities were improved for these releases, the risk to the public could be significantly reduced.
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