Cover: Evaluating the Reliability of Emergency Response Systems for Large-Scale Incident Operations

Evaluating the Reliability of Emergency Response Systems for Large-Scale Incident Operations

by Brian A. Jackson, Kay Sullivan Faith, Henry H. Willis

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RAND Chlorine Response Operation Model

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Abstract

The ability to measure emergency preparedness — to predict the likely performance of emergency response systems in future events — is critical for policy analysis in homeland security. Yet it remains difficult to know how prepared a response system is to deal with large-scale incidents, whether it be a natural disaster, terrorist attack, or industrial or transportation accident. This research draws on the fields of systems analysis and engineering to apply the concept of system reliability to the evaluation of emergency response systems. The authors describe a method for modeling an emergency response system; identifying how individual parts of the system might fail; and assessing the likelihood of each failure and the severity of its effects on the overall response effort. The authors walk the reader through two applications of this method: a simplified example in which responders must deliver medical treatment to a certain number of people in a specified time window, and a more complex scenario involving the release of chlorine gas. The authors also describe an exploratory analysis in which they parsed a set of after-action reports describing real-world incidents, to demonstrate how this method can be used to quantitatively analyze data on past response performance. The authors conclude with a discussion of how this method of measuring emergency response system reliability could inform policy discussion of emergency preparedness, how system reliability might be improved, and the costs of doing so.

Table of Contents

  • Chapter One

    Introduction: Measurement and Emergency Preparedness

  • Chapter Two

    Defining and Demonstrating Response Reliability Analysis

  • Chapter Three

    Describing a Chlorine Release Scenario and Relevant Response Parameters

  • Chapter Four

    A Simplified Model of an Emergency Response to a Chlorine Release

  • Chapter Five

    Exploring What Can Go Wrong During a Chlorine Response Operation: Identifying Relevant Failure Modes

  • Chapter Six

    Assessing the Probability, Effects, and Severity of Failure Modes: An Exploratory Analysis Using Response After-Action Reports

  • Chapter Seven

    Concluding Observations

  • Appendix A

    Approximating Response Reliability Curves

  • Appendix B

    Correspondence Between the Chlorine Response Model Used in This Analysis and Other Ways of Categorizing or Organizing Response Operations

  • Appendix C

    Description of Components of the RAND Chlorine Response Model Not Covered in the Text

  • Appendix D

    Failure Trees for All Elements of the Response Model

  • Appendix E

    Counts of Failure Modes Identified per Analyzed After-Action Report

  • Appendix F

    List of After-Action Reports Reviewed and Analyzed

This research was sponsored by the Federal Emergency Management Agency and was conducted under the auspices of the RAND Homeland Security and Defense Center, a joint center of the RAND National Security Research Division and RAND Infrastructure, Safety, and Environment.

This report is part of the RAND Corporation monograph series. RAND monographs present major research findings that address the challenges facing the public and private sectors. All RAND monographs undergo rigorous peer review to ensure high standards for research quality and objectivity.

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