ENVIRONMENTAL RISK ASSESSMENT OF THE OLEFIN PLANT IN ARYA SASOL PETROCHEMICAL COMPLEX USING FAULT TREE ANALYSIS METHOD

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JOZI S.A.; ESMAT SAATLOO S.J.; MAHMOUDI KARAM JAVAN Z.

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Journal: Iranian Journal of Health and Environment Year:2014 | Volume:7 | Issue:3 Page(s): 385-397

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Title

ENVIRONMENTAL RISK ASSESSMENT OF THE OLEFIN PLANT IN ARYA SASOL PETROCHEMICAL COMPLEX USING FAULT TREE ANALYSIS METHOD

Author(s)

JOZI S.A. | ESMAT SAATLOO S.J. | MAHMOUDI KARAM JAVAN Z. | Issue Writer Certificate

Keywords

ENVIRONMENTAL RISKQ2

OLEFIN PLANTQ2

HYDROCARBON LEAKAGEQ2

FAULT TREE ANALYSIS METHODQ2

Abstract

Background and Objectives: Chemical spillage of equipment is possible in petrochemical processes. Occurrence of such event can result in firing and explosion and consequently would bring about some risks to the environment affected. The aim of this study was to assess ENVIRONMENTAL RISKs in OLEFIN PLANT, Arya Sasol Petrochemical Company in order to identify ENVIRONMENTAL RISKs at producing source.Methods: The basic data was gathered through using the results of monitoring and measurement of ambient air pollutants and stack exhaust gases, safety review method and field observation. For determination the effects of hydrocarbons leakage from equipment on the environment, measuring BTEX in ambient air was performed as per EPA0030 Standard method with using Gas Chromatography at 4 stations of the complex and a portable Testo 350 XL device was used for monitoring stack exhaust gases, from 9 stacks from May 2011 to April 2012. Assessment and risk management tool used in this study was the FAULT TREE ANALYSIS METHOD. The main part of the risk assessment in fault tree method is selecting a top event. According to the statistics of accidents and environmental aspects of ethane cracking operations, HYDROCARBON LEAKAGE is detected as top event and then composition and relationship between risk factors is determined in the form of terminal event, intermediate event and the gate “and” and “or”. With qualitative and quantitative analysis of fault tree of this accident, the main causes of the accident and the likelihood of the top event was calculated for a year.Results: Comparing with other stations, it was found that benzene with concentration of 0.37 mg/m3 in autumn, toluene with concentration of 0.13 mg/m3 in spring, and ethyl benzene with concentration of 0.09 mg/m3 in autumn, and xylene with the concentration of 1.01 mg/m3 in autumn season had the highest concentration. The fault tree developed had 16 events (including final, intermediate, and initial), which were connected to each other with seven logic gates. The maximum error percentage in the terminal events was attributed to the hardware failures such as malfunction in equipment with 55.55 percent followed by human and administrative errors in the next ranking. The highest percentage (22.2%) of the terminal events was related to the gasket unsuitable material; the main reason is due to the economic sanctions and the lack of effort to provide high quality products.Conclusion: Most likely occurrence of the final event was related to the gasket unsuitable material (2´10-2). Control action to prevent the occurrence of leakage could be supplying high quality gaskets and the failure is classified in the hardware failure category.

Cites

EQUIPMENT'S ENVIRONMENTAL RISKS IDENTIFICATION IN THE HOT-ROLLING KAVIR STEEL INDUSTRY USING WATH IF AND RISKS ASSESSMENT USING WILLIAM FINE METHODS

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APA: Copy

JOZI, S.A., ESMAT SAATLOO, S.J., & MAHMOUDI KARAM JAVAN, Z.. (2014). ENVIRONMENTAL RISK ASSESSMENT OF THE OLEFIN PLANT IN ARYA SASOL PETROCHEMICAL COMPLEX USING FAULT TREE ANALYSIS METHOD. IRANIAN JOURNAL OF HEALTH AND ENVIRONMENT, 7(3), 385-397. SID. https://sid.ir/paper/145908/en

Vancouver: Copy

JOZI S.A., ESMAT SAATLOO S.J., MAHMOUDI KARAM JAVAN Z.. ENVIRONMENTAL RISK ASSESSMENT OF THE OLEFIN PLANT IN ARYA SASOL PETROCHEMICAL COMPLEX USING FAULT TREE ANALYSIS METHOD. IRANIAN JOURNAL OF HEALTH AND ENVIRONMENT[Internet]. 2014;7(3):385-397. Available from: https://sid.ir/paper/145908/en

IEEE: Copy

S.A. JOZI, S.J. ESMAT SAATLOO, and Z. MAHMOUDI KARAM JAVAN, “ENVIRONMENTAL RISK ASSESSMENT OF THE OLEFIN PLANT IN ARYA SASOL PETROCHEMICAL COMPLEX USING FAULT TREE ANALYSIS METHOD,” IRANIAN JOURNAL OF HEALTH AND ENVIRONMENT, vol. 7, no. 3, pp. 385–397, 2014, [Online]. Available: https://sid.ir/paper/145908/en

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