Separation Distances in NFPA Codes and Standards Final Report Prepared by: Dr. Ted Argo and Mr. Evan Sandstrom Applied Research Associates, Inc. Rocky Mountain Division 7921 Shaffer Parkway Littleton, CO 80127 © 2014 Fire Protection Research Foundation THE FIRE PROTECTION RESEARCH FOUNDATION ONE BATTERYMARCH PARK QUINCY, MASSACHUSETTS, U.S.A. 02169-7471 E-MAIL:
[email protected] WEB: www.nfpa.org/Foundation —— Page c —— —— Page ii —— FOREWORD Many NFPA codes and standards, in particular NFPA 400, Hazardous Materials Code, specify separation/clearance distances for hazardous chemical storage and processes from other equipment and occupied buildings. Many of these requirements have historical undocumented origins. Guidance, which may inform a sound technical basis for adjusting these distances, has been requested by NFPA Technical Committees. There are a number of methodologies in the literature, both risk and hazard based, which are used in the chemical safety process safety field that may be relevant to the calculation of these distances. The purpose of this project is to provide guidance to NFPA technical committees on methodologies to develop technically based separation/clearance distances for hazardous chemical storage/processes and their application to the chemical storage and processes. The specific focus of the project is those hazards within the scope of NFPA 400. The Research Foundation expresses gratitude to the report author Dr. Ted Argo and Mr. Evan Sandstrom, who is with Applied Research Associates, Inc located in Littleton, CO. The Research Foundation appreciates the guidance provided by the Project Technical Panelists and all others that contributed to this research effort. Thanks are also expressed to the National Fire Protection Association (NFPA) for providing the project funding through the NFPA Annual Code Fund.