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Quantitative risk assessment for accidental release of ethylene oxide from purification column of an ethylene oxide production unit

Abdolhamidzadeh, B ; Sharif University of Technology | 2006

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  1. Type of Document: Article
  2. Publisher: 2006
  3. Abstract:
  4. This paper outlines a quantitative risk assessment for an 110,000 ton/day ethylene oxide production plant in Iran. After a complete and detailed hazard identification study, done by HAZOP method, the purification column was found to be one of the most hazardous sections in this plant. As ethylene oxide with high concentration and inventory is present there. Fault tree analysis (FTA) technique has been used to identify the basic events responsible for top event occurrence and also calculation of top event frequency of occurrence. Human error has been calculated numerically and probability of human error has been estimated. Failure rate data were collected referring to several sources and suitably modified for Iranian operating conditions. Consequence modeling and analysis of the probable scenarios has been carried out. Then risk has been estimated by well-known methodologies in terms of fatality and injuries. The result obtained can be the input for every risk management and emergency planning activity for the plant under study
  5. Keywords:
  6. Chemical modification ; Ethylene ; Fault tree analysis ; Probability ; Purification ; Risk assessment ; Consequence analysis ; Emergency planning ; Ethylene oxide ; Purification column ; Chemical industry
  7. Source: CHISA 2006 - 17th International Congress of Chemical and Process Engineering, Prague, 27 August 2006 through 31 August 2006 ; 2006 ; 8086059456 (ISBN); 9788086059457 (ISBN)