Abstract
In recent years, the HAZOP analysis method has been widely used in the process safety analysis and evaluation of long-distance oil and gas pipeline stations. However because it cannot give quantitative assessment, whether the risk can be controlled within acceptable range by safety measures can hardly be judged. To compensate for these deficiencies, LOPA analysis was introduced on the basis of HAZOP analysis. By studying the characteristics of HAZOP and LOPA analysis methods and the relationship between them, it is found that the two can be complementary and combine to enhance the safety analysis effect. Taking a pipeline station of refined oil for example, the assessment effect of the proposed HAZOP-LOPA risk assessment method is discussed. The results show that the HAZOP-LOPA method can not only quantify the risk, but also determine whether the existing safety measures are sufficient or not. The HAZOP-LOPA method can effectively overcome the shortcoming of HAZOP analysis method and improve the accuracy of risk assessment.
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