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A Guide for Assessing Community Emergency Response Needs and Capabilities for Hazardous Materials Releases (2011) / Chapter Skim
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Appendix C - Estimating the Consequence Term in the Risk Metric Equation
Pages 66-70

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From page 66...
... , must make the plan available to local emergency response personnel and use the toxic endpoints defined in 40 CFR 68.22 to identify the number of off-site individuals who could be exposed to the listed hazards. When assessing the consequences along a transport corridor, the techniques used to estimate the population that is potentially exposed to the release for a fixed facility could also be used for a release along the transport route.
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From page 67...
... A fire, if not prevented from spreading, can involve nearby structures and do extensive damage. An explosion or BLEVE can do a lot of structural damage, resulting in replacement of C-2 A Guide for Assessing Community Emergency Response Needs and Capabilities for Hazardous Materials Releases
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From page 68...
... For example, if the scenario of concern is a security risk to a structure of national significance, commonly termed Estimating the Consequence Term in the Risk Metric Equation C-3 Table C-1. Estimated fatalities from postulated railroad accidents.
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From page 69...
... Consequence measures for postulated accidents on rail line s. Facility or Route Hazard Quantity of Material Typical Type Infrastructure Damaged Land Area Damaged Number of Infrastructure Units in Hazard Zone Infrastructure Damage kg acres # $ Railroad s BLEVE (Ethylene Oxide)
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From page 70...
... 3 4 2 Roads x, y Fire (gasoline) 3 2 1 Facility Z Explosion (ethylene)
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Key Terms

  • emergency response
  • roads x
  • consequence term
  • risk metric
  • facility z

  • consequence measures
  • damage radius
  • metric equation
  • crop value
  • exposure time

  • low crop
  • z toxic
  • toxic liquid
  • toxic endpoints
  • assessing community

  • reasonable estimate
  • average population
  • land damaged
  • land contamination
  • residential population

  • materials releases
  • land values
  • postulated railroad
  • community emergency
  • population impacts

  • structural damage
  • flash fires
  • fixed facility
  • hazardous materials
  • safety risks


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