Facilities that handle hazardous materials above threshold quantities are required to assess the impacts due to postulated accidents involving releases of these materials, and to ensure that people are adequately protected from the associated fire, explosion, and toxic hazards. An analysis of these hazards can be based solely on consequences from maximum credible events or can incorporate the likelihood of the events to characterize results in terms of risk. The methods of performing these analyses may vary, but, regardless of the specific techniques used, fundamental principles of thoroughness and defensibility should be achieved. This study describes best practices and basic requirements for consequence‐based and risk‐based facility siting studies (FSSs), also commonly referred to as quantitative risk analyses, consistent with industry guidance. The fundamental objective of a consequence‐based or risk‐based FSS is to ensure that the consequences or risks posed by facility operations are minimized to the extent practical.

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This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof. This report has been reproduced directly from the best available copy. AvaiIabIe to DOE and DOE contractors from the Office of Scientific and Technical Information, I?. 0. Box 62, Oak Ridge, TN 37831; prices available from (423) 576-8401.