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Development of a framework for the risk assessment of Na-Tech accidental events

Author

Listed:
  • Antonioni, Giacomo
  • Bonvicini, Sarah
  • Spadoni, Gigliola
  • Cozzani, Valerio

Abstract

Natural events impacting on chemical and process plants may cause severe accidents, triggering the release of relevant quantities of hazardous substances. The present study focused on the development of the tools needed to build up a general framework allowing the extension of quantitative risk assessment procedure to include the analysis of the industrial accidents caused by natural events. Specific methods and models were developed to allow the quantitative assessment of risk caused by two categories of “Na-Tech†accidents: accidents triggered by earthquakes and accidents triggered by floods. The approach allows the identification of the different damage modes expected for process equipment and of the accidental scenarios that may be triggered. The damage models developed allow the calculation of the damage probability of equipment items due to the natural events. A specific methodology was issued to take into account the consequences of the possible contemporary failure of several process units due to the impact of the natural event. The procedure allows the calculation of the overall individual and societal risk indexes including the multiple-failure scenarios caused by the impact of natural events. The overall methodology was applied to the analysis of specific case studies.

Suggested Citation

  • Antonioni, Giacomo & Bonvicini, Sarah & Spadoni, Gigliola & Cozzani, Valerio, 2009. "Development of a framework for the risk assessment of Na-Tech accidental events," Reliability Engineering and System Safety, Elsevier, vol. 94(9), pages 1442-1450.
    • Handle: RePEc:eee:reensy:v:94:y:2009:i:9:p:1442-1450
    DOI: 10.1016/j.ress.2009.02.026
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