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Safety analysis and risk identification for a tubular reactor using the HAZOP methodology

J. Labovský, Ľ. Jelemenský, and J. Markoš

Institute of Chemical and Environmental Engineering, Faculty of Chemical and Food Technology, Slovak University of Technology, Radlinského 9, 812 37 Bratislava, Slovak Republic



Received: 6 April 2006  Revised: 6 July 2006  Accepted: 1 August 2006

Abstract: A model approach to Hazard and Operability (HAZOP) analysis is presented based on the mathematical modeling of a process unit where both the steady-state analysis, including the analysis of the steady states multiplicity and stability, and the dynamic simulation are used. Heterogeneous tubular reactor for the ethylene oxide production from ethylene and oxygen was chosen to identify potential hazards for real system. The computer code DYNHAZ was developed consisting of a process simulator and a generator of the HAZOP algorithm.

Keywords: reactor safety - hazard analysis - dynamic simulation - multiple steady states - HAZOP methodology

Full paper is available at

DOI: 10.2478/s11696-006-0082-0


Chemical Papers 60 (6) 454–459 (2006)

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