Analysis on the individual risk in the periphery of products pipeline

In this paper, the model and procedure for calculating the individual risk of products pipeline were established in order to quantitatively calculate the individual risk in the periphery of products pipeline. In the model for calculating the individual risk of products pipeline, the basic pipeline failure frequency of each hazard factor is set and the pipeline failure frequency is calculated by modifying the basic failure frequency. Based on the size of pipeline leakage hole, pipeline leakage is classified into three types, i.e., micro-hole leakage, moderate-hole leakage and pipeline rupture leakage. Pipeline failure consequence calculation consists of 4 steps: release rate, ignition probality, thermal radiation and radiation injury. Based on the calculated pipeline failure frequency and failure hazard consequence, the individual risk in the periphery of the pipeline is calculated and whether it is acceptable is determined. The calculation of individual risk by this model relies on the accident statistics of the pipeline failure database, so it is suggested to strengthen the construction of China's oil and gas pipeline failure database.