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Risk Assessment of Probable Domino Scenarios Between Two Petrochemical Units

Zeinali, Nassim | 2010

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 40303 (06)
  4. University: Sharif University of Technology
  5. Department: Chemical and Petroleum Engineering
  6. Advisor(s): Rashtchian, Davood
  7. Abstract:
  8. Hazard analysis and risk assessment are the two significant methods of controlling and reducing risk caused by industrial units. To achieve the required safety needed in either new or operating plants, risk assessments are being used for some specific hazards such as fire, explosion and toxic release. Increasing industrial developments and occurrence of several catastrophic accidents in chemical processing plants have contributed to striking disasters and have obliged experts to use analytical solutions to evaluate frequencies and consequences of such events. Congested plants in industrial areas like Mahshahr and Asalouyeh in Iran and other places in the world are the reason why it has become so important to assume mutual effects in calculating risk. Most of the previously performed projects in risk assessment criteria are related to the consideration of single effects. In this project risk assessment has been done for domino scenarios between petrochemical units. The primary scenarios and their escalation vectors have been firstly specified, then consequence of each scenario has been calculated using professional modeling software and the probability methods have been used for frequency evaluations. In order to determine possible domino effects, threshold values and probit models have been utilized for different types of equipments. Eventually, the risk values of each probable scenario are compared to some standard values in order to find out whether or not the arrangement of the neighboring units is safe enough.

  9. Keywords:
  10. Probit Model ; Risk Assessment ; Domino Accidents ; Threshold Value

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