Analysis of Oil Pipeline Leakage Public Safety Incident Evolution Based on ETA and FTA

At present, the city pipeline leakage accidents occur frequently, and Qingdao "11.22" Sinopec Dong Huang oil pipeline explosion accident is thought-provoking. Combined with the research results of the accident, the article uses the Event Tree and Fault Tree to analyze the evolution process and path and probability of the pipeline leak public safety incident. The results show that: whether the explosion happens or not, the probability of environment pollution is the highest caused by the oil pipeline leakage; the probability of explosion is much lower than the probability of non-explosion; the probability of social unrest caused by the environment pollution without explosion is the highest; the evolution of "11.22" accident is along the occurrence of the highest probability accident, not an incalculable accident.