Overall reliability analysis on oil/gas pipeline under typical third-party actions based on fragility theory

The overall reliability model is established and quantitatively evaluates the risks of Petro-China Gang-Zao product oil pipeline. By comparing the calculation results from algorithm software with the actual situation, the confidence interval of this model is [95%, 100%]. This model can precisely calculate the risk probability of certain pipe sections and then decide which section should be preferentially maintained and protected, increasing the efficiency of pipeline management.