Risk Assessment Using a Structured Combined Method
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Date
2025-02-28
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Publisher
International Journal of Safety and Security Engineering.Vol. 15, No. 2, February, 2025, pp. 383-396
Abstract
This study presents a novel risk assessment approach for crude oil heaters, integrating
structured combined methods to enhance safety and reliability. We begin by employing
Hazard and Operability Study (HAZOP) to systematically identify potential accident
scenarios. To deepen our understanding of system functionality and potential
malfunctions, we utilize D-higraphs for functional modelling. Building on the scenarios
identified, we apply Fault Tree Analysis (FTA) to estimate root causes and frequencies
of failures. Following this, Event Tree Analysis (ETA) allows us to explore the
consequences of success or failure of safety barriers. The integration of FTA and ETA
culminates in the bowtie method, which effectively illustrates the relationships between
hazards, their causes, and the safety measures in place. This structured methodology not
only offers a comprehensive risk assessment framework but also enhances the
identification and evaluation of safety barriers, making it a unique contribution to
existing risk assessment practices.